Re: [Repeater-Builder] down tilt
Thanks Kevin-you are right---my "noticed downtilt "meant to say "noticed uptilt" as the terraine inland from this site increased in HASL . Thanks again Kevin Regards Bradley Glen --- Kevin Custer <[EMAIL PROTECTED]> wrote: > Hold on there Bradley... > > An antenna that is built for a higher frequency than > what you are > inputting will exhibit downtilt in its original > orientation. > > Kevin > > bradley glen wrote: > > Hi All > > > > I agree with Kevin and have used this in the > > commercial field where the anteena was originallt > cut > > higher than was to be used. > > > > I mounted the antenna upside-down and had good > > results-with some noticed downtilt which was good > for > > the application .On the same token keep in mind > that > > most of the efficiency of the collinear design > lies at > > the first radiating element - reduced radiation as > one > > extends to the end of the antenna. > > > > Good luck > > Regards > > Bradley glen zs5swt /zs5wt > > > > --- Chuck Kelsey <[EMAIL PROTECTED]> wrote: > > > > > >> Thanks for saving me all the typing ;-) > >> > >> Chuck > >> WB2EDV > >> > >> > >> > >> Kevin Custer wrote: > >> > >>> I think what Chuck was getting at was the > >>> > >> 'automatic' beamtilt of a > >> > >>> vertical omni collinear (usually fiberglass) > when > >>> > >> it is run outside of > >> > >>> its specified bandwidth. As a function of the > >>> > >> element length in a > >> > >>> coaxial collinear as compared to the applied > >>> > >> frequency, the vertical > >> > >>> beam pattern will change with applied frequency. > > >>> > >> If a coaxial collinear > >> > >>> is fed with a signal that is exactly on its > design > >>> > >> frequency, the > >> > >>> vertical beam pattern will be centered about the > >>> > >> antenna, and the > >> > >>> antenna will be at its highest radiating > >>> > >> efficiency. If a coaxial > >> > >>> collinear is fed with a signal that is 2% lower > >>> > >> than its design, the > >> > >>> antenna will exhibit a vertical beam downtilt of > >>> > >> approximately 3 degrees > >> > >>> and suffer approximately 10% loss in overall > gain. > >>> > >> If a signal that is > >> > >>> 2% higher than the antenna design is fed into a > >>> > >> coaxial collinear, > >> > >>> vertical beam uptilt of approximately 3 degrees > >>> > >> will occur, and again a > >> > >>> loss of overall gain. > >>> > >>> These instances are not the case with binary or > >>> > >> corporate fed dipole > >> > >>> arrays, as the phasing harness predominantly > >>> > >> controls the vertical beam > >> > >>> pattern. Beam Tilt and efficiency doesn't change > >>> > >> very much with applied > >> > >>> frequency, and is one reason that the exposed > >>> > >> dipole array is a better > >> > >>> choice where wide band operation is required. > >>> > >>> Kevin Custer > >>> > >>> skipp025 wrote: > >>> > >>>> Kind of loaded question/statement/answer > really. > >>>> > >> All > >> > >>>> antennas have both horizontal and vertical > >>>> > >> beamwidth. > >> > >>>> Depending on what you think is beam-tilt... one > >>>> > >> could > >> > >>>> and some do say all antennas have a beam tilt > and > >>>> > >> or > >> > >>>> a beam width. Others combine the description... > > >>>> > >>>> In the more commercial world of antennas, we > now > >>>>
Re: [Repeater-Builder] down tilt
Hi All I agree with Kevin and have used this in the commercial field where the anteena was originallt cut higher than was to be used. I mounted the antenna upside-down and had good results-with some noticed downtilt which was good for the application .On the same token keep in mind that most of the efficiency of the collinear design lies at the first radiating element - reduced radiation as one extends to the end of the antenna. Good luck Regards Bradley glen zs5swt /zs5wt --- Chuck Kelsey <[EMAIL PROTECTED]> wrote: > Thanks for saving me all the typing ;-) > > Chuck > WB2EDV > > > > Kevin Custer wrote: > > I think what Chuck was getting at was the > 'automatic' beamtilt of a > > vertical omni collinear (usually fiberglass) when > it is run outside of > > its specified bandwidth. As a function of the > element length in a > > coaxial collinear as compared to the applied > frequency, the vertical > > beam pattern will change with applied frequency. > If a coaxial collinear > > is fed with a signal that is exactly on its design > frequency, the > > vertical beam pattern will be centered about the > antenna, and the > > antenna will be at its highest radiating > efficiency. If a coaxial > > collinear is fed with a signal that is 2% lower > than its design, the > > antenna will exhibit a vertical beam downtilt of > approximately 3 degrees > > and suffer approximately 10% loss in overall gain. > If a signal that is > > 2% higher than the antenna design is fed into a > coaxial collinear, > > vertical beam uptilt of approximately 3 degrees > will occur, and again a > > loss of overall gain. > > > > These instances are not the case with binary or > corporate fed dipole > > arrays, as the phasing harness predominantly > controls the vertical beam > > pattern. Beam Tilt and efficiency doesn't change > very much with applied > > frequency, and is one reason that the exposed > dipole array is a better > > choice where wide band operation is required. > > > > Kevin Custer > > > > skipp025 wrote: > >> Kind of loaded question/statement/answer really. > All > >> antennas have both horizontal and vertical > beamwidth. > >> Depending on what you think is beam-tilt... one > could > >> and some do say all antennas have a beam tilt and > or > >> a beam width. Others combine the description... > >> > >> In the more commercial world of antennas, we now > see > >> vertical omni repeater site antennas with > adjustable > >> beam tilt. > >> > >> But I'm not sure if I'd say they have to be made > with > >> fiberglass radomes (covers). There's more than > one method > >> used by the various mfgrs to adjust the beam tilt > - beam > >> width. For the most part we only see some models > with > >> adjustable setting in some vertical omni models > with > >> composite radomes. > >> > >> ... and you pay serious money for the adjustable > beam > >> tilt models. If you pay attention to the specs, > you'll > >> see values for the horizontal, vertitcal beam > width and > >> where needed, the/any adjustable beam tilt > values. > >> > >> Your results will probably vary... > >> > >> cheers, > >> skipp > >> > >> > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] very close frequencies seperation
Hi
What you need is hybrid a ring isolator that uses one
cavity and some specific phasing lines and that will
notch out a close frequency as you discribed.
They do have a little loss of around 2 dB's but are
very sharp on the nulling out .If tweaked properly one
can get about 45-60 db isolation.
They did appear in some of the old ham radio manuals.
I am sure this should be good.
http://www.repeater-builder.com/sinclair/w2euphybridringduplexer.pdf
I have used these on two repeaters in the past and
they look more complex than they are.
We had semi-rigid which helped and omproved the
isolation.Also stick to high quality connectors and
NOT PL259 -these are at the bottom of the impedance
stability list.N-Type are always good .
Hope this helps you
Regards
Bradley Glen ZS5SWT
http://mwmbers.harc.org.za/zs5swt
--- Ian Wells <[EMAIL PROTECTED]> wrote:
> These sites are 10-15kms from the nearest houses in
> rual country .I have a
> separate site to site licence that is still valid
> that I don't use any more
> and I am looking at utilizing it instead of the
> diagram I sent through
> before .I am having no worries with my remote sites
> to the central hub site
> I am only having problems with 2 sites that hav the
> transmitt frequencies
> 100-375khz away from the central hub signal which is
> wipeing it .But if i
> can use this other frequency that i have it will
> them be upto 15meg away
> from the sites transmitt frequency and shouldnt
> affect it
>
> Thank You,
> Ian Wells,
> Kerinvale Comaudio,
> www.kerinvalecomaudio.com.au
>
> ---Original Message---
>
> From: AdamVazquez Kb2Jpd
> Date: 03/28/06 23:38:39
> To: Repeater-Builder@yahoogroups.com;
> Repeater-Builder@yahoogroups.com
> Subject: Re: [Repeater-Builder] very close
> frequencies seperation
>
> Usually, you use a backbone frequency on a different
> band (in the US 220 Mhz
> & up) or a dedicated dc controlled phone line so you
> can have the desired
> linking.
>
> It is difficult, but not impossible, to link on the
> same band. Is that you
> will thinking of implementing.?
>
> Adam Kb2Jpd
>
> -Original Message-
>
> From: "Ian Wells" <[EMAIL PROTECTED]>
> Subj: [Repeater-Builder] very close frequencies
> seperation
> Date: Mon Mar 27, 2006 4:21 pm
> Size: 2K
> To:
>
> v\:* {behavior:url (#default#vml);} v\:* {
> BEHAVIOR: url (#default#vml)
> } Hi guys .I am trying to receive 473.575mhz
> from a 25 watt repeater
> ,line of sight, 50kms away and and retransmitt it on
> 473.200 at 25 watt on
> another site.The transmitt antenna is a 6db vertical
> ,9 meters above ground
> and the rx antenna is a 6 db uhf beam 1-2 meter
> above ground ,aimed at the
> 473.575 site Is it possible to notch out frequencies
> going into a receiver
> that are275 or 375 khz off a uhfreceive signal or is
> it going to be too
> close to filter outthe TX .
>
> Thank You,
> Ian Wells,
> Kerinvale Comaudio,
> www.kerinvalecomaudio.com.au
>
>
>
>
>
>
>
>
>
>YAHOO! GROUPS LINKS
>
> Visit your group "Repeater-Builder" on the web.
> To unsubscribe from this group, send an email to:
> [EMAIL PROTECTED]
> Your use of Yahoo! Groups is subject to the Yahoo!
> Terms of Service.
>
>--- Attachment imstp_wine_glass_en.gif---
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
__
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Balloons to be tested as cell-tower Replacement
I work on GSM equipment and technically they have no clue-I suggest they get an introduction to GSM course for DUMMIES Regards Bradley ZS5WT --- Dave VanHorn <[EMAIL PROTECTED]> wrote: > --- In Repeater-Builder@yahoogroups.com, "KA9QJG" > <[EMAIL PROTECTED]> wrote: > > > > Well forget looking for Tower Repeater Sites Maybe > this will Work As A > > Alternate > > > > http://tinyurl.com/7mwdh > > Getting the 100AH battery up there is going to be a > problem though.. > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Standalone e&m interface.
Good Day If you are looking for a leased line unit , have a look at the Motorola units.This product used 4 wire to impliment the 6wire (TX /RX /E /M /) by means of inband signalling.All signalling are upper audio frequencies are 2710 hz etc .Leased line audio response is 300-3400hz) You could build one yourself if you use the correct filtering but from your email you are looking for an aftermarket unit. Regards Brad ZS5WT --- rick <[EMAIL PROTECTED]> wrote: > Sorry I know its been hashed out a thousand times > but, I cannot find > anything with search. Is there a standalone unit > that will implement > an e&m interface for a link receiver? I dont want > it to be voip if > possible. The group that needs it has fiber between > the sites and can > easily cut a leased circuit out of the heard. > Better ideas? Just > trying to keep the moving parts to a minimum. > > > Rick > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Yahoo! DSL Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Multiple receivers one antenna ???
Good Day If you are able to lose = - 6 db of the signal to each receiver you could use a passive device which you can build yourself and save many many dollars. There is pleny of information on the web on a 4-port "Wilkonson divider ". The same phasing harness is used for a 4-stack dipole array so you could ask around for one or buy it off the shelf-these are frequenct contious. Regards Bradley Glen ZS5WT http://members.harc.org.za/zs5wt --- Mathew Quaife <[EMAIL PROTECTED]> wrote: > How about a lead to such vendors and some model > numbers as well, would be helpful. > > Mathew > > > Eric Lemmon <[EMAIL PROTECTED]> wrote: > Vincent, > > It's easy! What you need is known as a > multicoupler. This unit usually comprises a > preselector to limit the bandwidth of the incoming > signals, a low-noise amplifier, and a splitter with > two, four, or eight output ports. The gain of the > amplifier is tailored to the number of splits so > that the loss in the splitter is overcome. > > 73, Eric Lemmon WB6FLY > > > - > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] On Behalf > Of Vincent Caruso > Sent: Sunday, December 18, 2005 1:04 PM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] Multiple receivers one > antenna ??? > > > > I would like to install one antenna for four link > receivers. How > complicated is this? What do I need to do this? > > Thanks in advance > > > > > > > > > > - > YAHOO! GROUPS LINKS > > > Visit your group "Repeater-Builder" on the web. > > To unsubscribe from this group, send an email > to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to the > Yahoo! Terms of Service. > > > - > > > > > > __ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam > protection around > http://mail.yahoo.com __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] GM300 Deviation
Good Day Bob Yes these are factory set for the diffrent bandwidths 10/12,5/20/25khz although there is no technical reason why one can change them in the field to optimise your system. What I do is check the RSS settings and make sure they are roughly in the centre of their software and then when running up the links or repeater tx I fine tune these pots to my system deviation.Just remember that these are max settings so one must take this into account when running them up. My experience is adjust voice first as this setting has an influence on the CTCSS level adjustment. Have fun.See my web page for my repeater and other info . Regards Bradley Glen ZS5WT http://members.harc.org.za/zs5wt/ --- "Bob M." <[EMAIL PROTECTED]> wrote: > Is there an official procedure for adjusting both > R302 > and R164? I thought those were set at the factory > and > the RSS deviation was supposed to be used in the > field. > > Bob M. > == > --- bradley glen <[EMAIL PROTECTED]> wrote: > > > Gm 300 does have an internal deviation setting > (max > > dev )on the rf board side of the radio. > > > > R302 -VCO mod being max dev and R164 pot being Ref > > (ctcss) > > > > There is also the squelch pot R60. > > > > I do have some mods for bi-level squelch on these > > radios that work just as well (better ) than the > > Micor > > repeater bi-level squelch circuits. > > > > Regards > > > > > > Regards > > > > Brad ZS5WT > > > > --- "Bob M." <[EMAIL PROTECTED]> wrote: > > > > > If you have a laptop, install RSS on that, bring > > it > > > to > > > the site and adjust it there. > > > > > > Bob M. > > > == > > > --- "Andrew G." <[EMAIL PROTECTED]> wrote: > > > > > > > OK I deserve this ridicule.meant "TX" dev. > > but > > > > oh well. Thanks for the help, thought it might > > be > > > in > > > > the software but did not want to pull it out > of > > > the > > > > site for nothing. > > > > > > > > Andy > > __ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam > protection around > http://mail.yahoo.com > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] GM300 Deviation
Gm 300 does have an internal deviation setting (max dev )on the rf board side of the radio. R302 -VCO mod being max dev and R164 pot being Ref (ctcss) There is also the squelch pot R60. I do have some mods for bi-level squelch on these radios that work just as well (better ) than the Micor repeater bi-level squelch circuits. Regards Regards Brad ZS5WT --- "Bob M." <[EMAIL PROTECTED]> wrote: > If you have a laptop, install RSS on that, bring it > to > the site and adjust it there. > > Bob M. > == > --- "Andrew G." <[EMAIL PROTECTED]> wrote: > > > OK I deserve this ridicule.meant "TX" dev. but > > oh well. Thanks for the help, thought it might be > in > > the software but did not want to pull it out of > the > > site for nothing. > > > > Andy > > __ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam > protection around > http://mail.yahoo.com > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Flat audio -use of compressor
Good Day Jeff I have a small uhf ham system ( 5 uhf+1 VHF +hub) all linked via a central HUB. All of the repeaters are de-emphasised and pre-emphasised at each point. I always have read about the many repeater owners that go on and on about Flat audio and now the first time I want to do anything to the audio there is a stumbling block. How do these repeater owners deal with this? Look forward to your response. Brad ZS5WT --- [EMAIL PROTECTED] wrote: > > 4 ms attack and 100 ms decay is more like a fast > limiter than a > compressor. 4 ms is only 2 cycles at 500 Hz which > is in the "meat" of > the voice region. > > Unless you use a de-emphasis network and low-pass > filter in the side > chain you're not going to be happy with the > compressor even if you > slowed down the time constants. The response "tilt" > that you have when > running "flat audio" (really preemphasized audio) > through the compressor > combined with the HF noise that's present any time > the signal is > anything less than DFQ will drive it into excessive > gain reduction. You > didn't say what the design of the control stage was, > but judging by the > attack time, I'm guessing it's a peak detector which > would likely > exacerbate the problem with regard to the HF noise > response. > > See a blurb I wrote a few years ago on > repeater-builder.com regarding > audio processing in narrowband FM for some more > info. > > --- Jeff > > > > -Original Message- > > From: Repeater-Builder@yahoogroups.com > > [mailto:[EMAIL PROTECTED] On > Behalf Of bradley glen > > Sent: Tuesday, November 22, 2005 5:19 PM > > To: Repeater-Builder@yahoogroups.com > > Subject: [Repeater-Builder] Flat audio -use of > compressor > > > > > > Good Day > > > > I would like to have comment on the use of the > > compressor on the repeater hardware between the rx > and > > tx units , with that repeater run up using the > "flat > > audio principle." > > > > What will happen to the existing audio's > attack/decay > > stats? > > > > The expeimental unit made for this test- specs for > > 4ms/100ms Attack/Decay repectively . > > > > Thanks Brad > > > > > > > > __ > > Yahoo! FareChase: Search multiple travel sites in > one click. > http://farechase.yahoo.com > > > > > > Yahoo! Groups Links > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.362 / Virus Database: 267.13.5/177 - > Release Date: > 11/21/2005 > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.362 / Virus Database: 267.13.5/177 - > Release Date: > 11/21/2005 > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Flat audio -use of compressor
Good Day I would like to have comment on the use of the compressor on the repeater hardware between the rx and tx units , with that repeater run up using the "flat audio principle." What will happen to the existing audio's attack/decay stats? The expeimental unit made for this test- specs for 4ms/100ms Attack/Decay repectively . Thanks Brad __ Yahoo! FareChase: Search multiple travel sites in one click. http://farechase.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Voting circuit required
Good Day Gentleman Thanks for the links etc but I would prefer to make it myself as with much of the interfacing on my repeater system. Thanks again . Brad ZS5WT --- skipp025 <[EMAIL PROTECTED]> wrote: > I'll throw in a vote for the LDG Voter. It's a > really nice way to set up a voting system. Has > a lot of extra helpful bells and whistles you > can actually use. > > cheers, > skipp > > > "Jamey Wright" <[EMAIL PROTECTED]> wrote: > > There is actually one of tose on eBay right now. > > > > > http://cgi.ebay.com/Doug-Hall-4RV-2-Signal-to-Noise-Radio-Voter_W0QQitemZ753 > > 8605980QQcategoryZ46539QQrdZ1QQcmdZViewItem > > > > Jamey Wright > > > > -Original Message- > > From: Repeater-Builder@yahoogroups.com > > [mailto:[EMAIL PROTECTED] Behalf > Of Jim B. > > Sent: Thursday, August 18, 2005 1:12 PM > > To: Repeater-Builder@yahoogroups.com > > Subject: Re: [Repeater-Builder] Voting circuit > required > > > > > > bradley glen wrote: > > > > > Good day All > > > > > > I am still looking for a 4 channel voting > circuit to > > > place voting on my UHF linked system. > > > > > > The two channel on Repeater Builders page will > not > > > suffice. > > > > > > Regards > > > > > > Bradley Glen ZS5WT > > > http://members.harc.org.za/zs5wt > > > > Best bet: > > http://www.dheco.com/voter.htm > > Easy to set up, reliable, votes as good as > anything else, and much > > cheaper than Mot or GE. > > -- > > Jim Barbour > > WD8CHL > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Voting circuit required
Good day All I am still looking for a 4 channel voting circuit to place voting on my UHF linked system. The two channel on Repeater Builders page will not suffice. Regards Bradley Glen ZS5WT http://members.harc.org.za/zs5wt __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Zetron Model 38A
Hi Les Use the Audio interface as one would use for your standard setup and if you could imagine place the Zetron input and output audio in a parallel fashion .In this way all dtmf etc would be used normally. With you ussing it to control the tail you would have the cos line connected. I am sure that you are are aware that one can use this panel for carrier operated squelch only or a combination of carrier as well as tone access.I have the main ch1 uhf Naturn linked this way and on irlp 8300 for years operating a zetron 38A as a carrier only repeater. See repeater page http://members.harc.org.za/zs5wt Regards Bradley Glen ZS5WT South Africa East Coast --- Les <[EMAIL PROTECTED]> wrote: > The Zetron Model 38A Tone Panel I am using for our > local 2M repeater > ait is only used for ident & tail functions & I do > not want the > repeater audio routed through it. Therefore I need > to modify the panel > so audio still goes in for DTMF control purposes & > the panel can > generate confirmation tones for commands. Removing > jumper 3 from the > board prevents the repeater audio passing through > the panel but it > also stops audio input & therefore no DTMF control. > As i Don't have a > Circuit Could someone please look at this > > Thanks > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] ? Any difference in a Zetron 38 and 38A ??
Hi As far I I can remember the 38 only did ctcss where the 38A did ctcss and dcs. You may want to check that the 38 had 94.8 hz tone missing , it has been quite some time since using the 38 . Regards Bradley Glen ZS5WT --- Rich Garcia <[EMAIL PROTECTED]> wrote: > I just got a Zetron Model 38 Repeater Controller. Is > there any difference > between the 38 and the 38A which is currently listed > on their web site. I > have never owned a Zetron Controller before and have > never used their items > except for their 2-Tone Encode/Decode Line. > > Any bad or good things to say about the Model 38 ? I > know they were popular > at one time. > > Thanks > Rich > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > Yahoo! Sports Rekindle the Rivalries. Sign up for Fantasy Football http://football.fantasysports.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Simulcast: Anyone done this for ham repeaters
Good day Jeff A simple means and cost effective is perhaps look at a standard off the shelf guitar pedal such as the Boss digital delay-could even clock down your 10 Mhz ref for the timing if required. Just a thought of not reinventing the wheel-most of the good delays use the "MN " delay chip. Something I have thought of in cases where telco microwave links are or a E1/T1 link is to have clock extraction off that link.All of the telco links in my country are clocked off Sat / GPS anyway. Commercial simulcasts are usually routed via microwave or other E1/T1 circuits that one could clock off. Our GSM sites all clock off the incomming E1 link. Just a thought Regards Bradley Glen ZS5WT --- Paul Finch <[EMAIL PROTECTED]> wrote: > FYI, > > Quintron's offsets ran 2 to 6 cycles per transmitter > at the most. 20 cycles > if getting audible. At 2 to 6 cycles the system > sounds pretty good. > > Paul > > > -Original Message- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] Behalf > Of Joe > Sent: Tuesday, June 07, 2005 5:36 AM > To: Repeater-Builder@yahoogroups.com > Subject: RE: [Repeater-Builder] Simulcast: Anyone > done this for ham > repeaters > > > Just keep n mind that you need to have a way to > offset each of the > transmitters 10-20Hz. You do not want them all on > the exact same frequency > on an analog simulcast system. If you do have them > exactly the same > frequency, you will be subject to deep and long > phasing nulls in the mixed > signal areas. This will sound like signal fade. If > you offset the > frequencies slightly, these multiple signals will > "roll" and create a low > frequency beat note. At a 10-20Hz frequency offset, > you will never hear a > 10-20HZ audio tone on a normal transceiver. > > Joe > > Jeff DePolo WN3A <[EMAIL PROTECTED]> wrote: > > I have three repeater transmitters running with > the rubidium/Delta > > combination, but I haven't tackled the audio delay > issue yet. The > > rubidium/Delta marriage and on-air testing has > been more or less just a > > proof-of-concept excercise up to this point. When > I have more time I'll > > get > > back to the project. > > > > --- Jeff > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Rx-voter >2 channel
Good day all I am looking for a circuit diagram for a 3 to 4 or more channel noise/voting circuit . Non intelligent (uP) controlled due to high lightning rate per annum. Regards Bradley Glen ZS5WT __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Simulcast: Anyone done this for ham repeaters
Hi Have a look at "Simulcast Solutions "webpage as they have much info on their site that is extremely interesting. Remember -frequency-phase and deviation from each transmitter is very important. Regards Bradley Glen ZS5WT --- Steve Rodgers <[EMAIL PROTECTED]> wrote: > > Thanks for all the replies. One thing I hadn't > considered was the audio delay > matching requirements. I was more interested in > simulcast for frequency reuse > then using it for the same audio on multiple TX's. > It looks like all you'll > get is unintelligible audio in areas where TX's > overlap. > > Steve > WA6ZFT > > On Sunday 05 June 2005 08:41, [EMAIL PROTECTED] wrote: > > HI Steve > > > > You know Mike (DAC) has done that with pagenet and > the other companys he > > has worked for if we can ever tie him down for a > bit of time he should be a > > world of info, I would think you need a Hi > Stability TO. on both repeaters. > > .bob > > > > > > Has anyone implemented a simulcast (multiple TX's > on the same channel) > > system for a ham 440 repeater system? It looks > like you have to have TXCO's > > capable of tracking within a few hertz of each > other. > > > > You can't do this with standard TCXO's, so I'm > wondering if anyone has > > tried modifying a TCXO to lock to a GPS source, or > NTP source. > > > > Steve WA6ZFT > > > > > > > ___ > > Get Juno Platinum for as low as $4.97/month! > > Unlimited Internet Access with 250MB of Email > Storage. > > Visit http://www.juno.com/half to sign up today! > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Simulcast: Anyone done this for ham repeaters
You may want to search Prodel Ecos This Italian system is the best I have heard in the working enviroment. Two methods -landline with high stability chrystal ovens or the GPS method.Later wins hands down. Regards Bardley Glen --- Mike Morris <[EMAIL PROTECTED]> wrote: > At 05:22 PM 6/4/05, you wrote: > > > >Has anyone implemented a simulcast (multiple TX's > on the same channel) system > >for a ham 440 repeater system? It looks like you > have to have TXCO's capable > >of tracking within a few hertz of each other. > > > >You can't do this with standard TCXO's, so I'm > wondering if anyone has tried > >modifying a TCXO to lock to a GPS source, or NTP > source. > > > >Steve WA6ZFT > > Years ago a group here in L.A. did the R&D and > actually > breadboarded the hardware and had a couple of > exciters > running. > > The impetus was finding 25 Panasonic color TVs that > ran > on +12v (made for RVs) in the city dump that has > smashed > picture tubes. > > They added a PLL to determine if the TV's color > burst > oscillator was locked to the off-the air signal. > This lock > signal was used to select F1 vs F2 on the exciter. > F1 had > a regular channel element, F2 had the output of the > synthesizer. The synthesizer was designed around > using > the TV color burst crystal as it's reference > oscillator, and > output a sine wave signal into a channel element > that was > modified to be a simple signal buffer (hint: the > hole in the > element cover fits one manufacturer's SMA connector > just > fine). > > The system never got built - the group was getting > free > rent at six prime privately owned sites (in exchange > for > site management and maintenance duties) and the > owner > sold out while the selling was good, and the sites > went > from zero to $250 a month. > > I have no info on the hardware design, the engineer > that was > doing the work died from emphysema a while back > his > smoking caught up with him. > > Mike WA6ILQ > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Zetron 38A Programming
Hi Tim 1st make sure that the carrier light does not stay on as if the SITE alarm is active for POWER UP it waits for the carrier to go off before sending tones out. This scenario produces a "lock-up " catch22 situation. Best try Bitcom as all should be ok on that program. Common problems with thoe panels are the Max 232 Ic that is close to the dB9 connector-replace to start off with. I will send you some software to assist you. Regards Bradley Glen ZS5WT B-Comm Node 8300 --- Tim Billingsley <[EMAIL PROTECTED]> wrote: > Zetron 38A 702-9075 rev. P > > I have built the serial interface cable for the > second time and checked the pinout multiple times. > > I am using MS's canned Hyperterm program. > > I have tried both 1200 and 4800 baud > 8 bit no parity 1 check bit > > I only have the power connections at this time. No > other connections other than the ground jumper > between ground and PTT ground are in place. This > jumper was on it when I received it. (Thank you - > you know who you are) > > I have yet to even get a glimmer of response from > the Z38 on the computer. > > Maybe Hypertrm is the wrong critter for the job or > maybe it's the operator heavy on the operator. > > Also I have not found any troubleshooting > information in the manual that I have. I am not > completely sure that this is a properly functioning > unit, but this is what I have. > > When I connect power to the unit > Power, Carrier, and DTMF LEDs initially come on > Power and Carrier remain on and DTMF goes off > immediately > a few seconds later the Encoding LED flashes and > continues to flash every 5 seconds. > > I know that there are some of you that are familiar > with this unit and using it currently. If you can > provide some insight or assistance it would be > greatly appreciated. > > Sorry guys. I am really green at all of this stuff, > but I would ike to try to do as well as I can with > the resources I have available. > > Thanks > Tim > > > bradley glen <[EMAIL PROTECTED]> wrote: > Hi Tim > > You can use a hyper terminal program such as Bitcom > and extract all the user info . > > regards > > Brad > --- Tim Billingsley wrote: > > The following is quote from the 38A manual. > > > > what I would like to know (from users of the 38A) > is > > there a way to > > 'extract' a configuration list from the controller > > in the same way you can > > display all the configuration information from a > > TNC? or is it strictly > > menu, prompt, and response as stated here? > > > > Thanks > > Tim > > > > > > = = = = = = = = = = = > > Programming Via The RS-232 Interface > > > > The Model 38 RS-232 port is valuable for initial > > test and adjustment, as > > well as general purpose programming and > monitoring. > > All programming is > > done with friendly menus and plain English > prompts. > > Programming is best > > done with an RS-232 display terminal or PC. Tasks > > such as adding, > > deleting, modifying parameters, retrieving > airtime, > > and real-time > > monitoring may all be accomplished without > > disrupting communications. Most > > any RS-232 terminal or computer running a > > communications program may be > > used. > > > > > > > > > > > > __ > > Yahoo! Mail Mobile > > Take Yahoo! Mail with you! Check email on your > > mobile phone. > > http://mobile.yahoo.com/learn/mail > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > [EMAIL PROTECTED] > > > > > > > > > > > > __ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam > protection around > http://mail.yahoo.com > > > > > > Yahoo! Groups Links > > > > > > > > > > Tim Billingsley, KD5CKP > http://www.qsl.net/kd5ckp/ > > - > Do You Yahoo!? > Yahoo! Small Business - Try our new Resources site! __ Do you Yahoo!? Yahoo! Small Business - Try our new Resources site http://smallbusiness.yahoo.com/resources/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Zetron 38A Programming
Hi Tim You can use a hyper terminal program such as Bitcom and extract all the user info . regards Brad --- Tim Billingsley <[EMAIL PROTECTED]> wrote: > The following is quote from the 38A manual. > > what I would like to know (from users of the 38A) is > there a way to > 'extract' a configuration list from the controller > in the same way you can > display all the configuration information from a > TNC? or is it strictly > menu, prompt, and response as stated here? > > Thanks > Tim > > > = = = = = = = = = = = > Programming Via The RS-232 Interface > > The Model 38 RS-232 port is valuable for initial > test and adjustment, as > well as general purpose programming and monitoring. > All programming is > done with friendly menus and plain English prompts. > Programming is best > done with an RS-232 display terminal or PC. Tasks > such as adding, > deleting, modifying parameters, retrieving airtime, > and real-time > monitoring may all be accomplished without > disrupting communications. Most > any RS-232 terminal or computer running a > communications program may be > used. > > > > > > __ > Yahoo! Mail Mobile > Take Yahoo! Mail with you! Check email on your > mobile phone. > http://mobile.yahoo.com/learn/mail > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Low-Pass Filters for Ferrite Isolators
Hi Dependant on the typr of filtering used .The standard is either a cavity or a 2nd harmonic filter which is very small in size.1" by 1 " . Regards Brad ZS5WT --- skipp025 <[EMAIL PROTECTED]> wrote: > The obvious answer would be the amount of > energy coupled to the two-loop bp cavity > output port should be minimal at the second > harmonic. > > A lot of people assume the isolator/circulator > is an automatic serious level 2nd Harmonic > generator. I've not found that to be the case. > > Places to be carefull: When using notch-pass > duplexing and some of the newer style combiners > where notching is the dominant portion of the > system and preselection and/or bandpass filters > are/is less applied. > > > > I have three different brand Trunking Combiners > side by side: Telewave (qty of 2), Cellwave (qty > of 2) & Wacom (qty of 1). All are unmodified > original as-built combiner units. > > Not a low pass filter in the bunch plus they > are all full duplex combiners (receive and > transmit on the same antenna). Same with both > the original Microwave Associates and Antenna > Specialist units in the next room. > > So the answer in my mind is yes I would trust > a trailing passband cavity (properly configured) > to do the job. So does/did the above named > companies*. > > cheers > skipp > > *rip wacom > > > "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > > I trust that if there is no Low-Pass filter > > at the isolator output, a passband cavity > > would do the job? > > LJ > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > __ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: A Good 440 Anttena
Hi Having worked with such patterns -the result is up to your imagination. The most commonly used was an omni and yagi. EG:A 6dB omni phased with a yagior corner reflector . This gives you a typical Butternut pattern as viewed from the top. This would be used in a case where a 2-stacked dipole of 3dB gave good all round coverage but a specific direction required additional coverage. The c-450 uhf system used many of these types of patterns to give the highways the best coverage possible. I am surprised many ham repeaters do not do the same.I have been doing some experimentation with cross-field coverage using the same principle. Regards Bradley Glen ZS5WT South Africa --- Thomas Oliver <[EMAIL PROTECTED]> wrote: > I saw an article on something like this myself, > There was this guy that had a tower with very wide > face (20 ft.) and wanted to have an omnidirectional > pattern so he tried the yagi approach and actually > ended up with a great omni pattern but the gain > ended up being unity or slightly above due to the > interaction of all the lobes of the yagis. Anyway > that is how I remember the outcome. > > > tom n8ies > > > - Original Message - > From: TOM MANNING > To: Repeater-Builder@yahoogroups.com > Sent: 3/29/2005 10:44:00 PM > Subject: Re: [Repeater-Builder] Re: A Good 440 > Antenna > > > Skip > This type antenna setup is of interest to me. > We have our repeater antenna atop a 150 ft water > tank but the cell antennas have taken over. The > owner told us we would have to live with the cell > people as they were paying customers and we aren't. > My idea is that we could use four yogis around the > rails with the power divided into four equal parts > with the yogis fed in phase and get somewhat a round > radiation pattern. Any info as you said would be > greatly appreciated. > Thanks. > de Tom Manning, AF4UG > > skipp025 wrote: > > re: Multiple feed antennas around a tower: > > This type of antenna was written up in Ham Radio > Magazine (rip) some years back. I just thumbed > past it the other day. > > The math and the information to cover around a > large tower with a quasi Joni pattern using > directional antennas was shown. > > If I see it again, I'll scan it and send it > in. I sure miss Ham Radio Magazine... > > skip > > > > Mike Morris WA6ILQ <[EMAIL PROTECTED]> wrote: > Years ago I saw a weird situation - a pair of 4-bays > on opposite sides of the tower, fed by a KM 2-port > power splitter. Later at a different site I saw a > custom > pattern engineered with a 4-port splitter and 4 beam > antennas. > How they kept them from interacting and screwing up > the pattern I'll never know... > > In your case you might be able to mount the dipoles > to the tower leg itself, perhaps with some magic > distances to get an Joni pattern. This would leave > the top of the tower bare ... let the tower itself > be > the lightning rod. > > I'd measure the tower face and make up a drawing > showing the 4 sides (or 3 sides?) of the tower, and > your mounting concept. Then contact the engineer > at the antenna company (via email or phone) and fax > the drawing to him and get his ideas. > > Mike WA6ILQ > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to the Yahoo! > Terms of Service. __ Do you Yahoo!? Yahoo! Mail - Easier than ever with enhanced search. Learn more. http://info.mail.yahoo.com/mail_250 Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Using Mobile Radios for Repeater Operation
> > > > Hi All my 6 linked uhf ham system are made up of commercial. General rule of thumb:If you use chrystal-generally have narrow front ends so the receive is better protected.The older synthesised radios of the 80's also have good frontends. Be careful of using han gear as they are nowdays very wide to cater for hams wanting to listen to everything in one radio-trade-off. The commercial unit have a good spec and for their enviroment are built a little tougher. Regards Brad ZS5WT __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Can you hear 3db?
Hi All I have noticed a various amoumt of personal perseption with regards to the remarks.Here is mine. Perhaps look at this scenario :When I do my repeater surveys I primarily look at the user requirements. Ant system is designed -for eg: mobile coverage or portable coverage. It has all got to do with "link budget "as a term we use now in GSM in my current job. If the up-link is the same as downlink the transparent coverage is achieved. My one ham repeater is only about 1 Watt into a 0dBm antenna.The reason for this is simple-the path link is sufficient for the Yagi antennas at all the repeaters to make up for any losses. I did some playing around and found that when one puts up a repeater -do your homework and do your installation as best as you can with quality products. If you really want to customise the repeater coverage first use 0 dBd (folded dipole ) in order to guage the coverage and make notes .From there you can then use higher gained antenna and make the notes. Too many people are bulldusted by "high gained antennas that really take coverage away from areas often where improvements are greatly needed. My golden rule with antenna specialising is thus :Energy can not be destroyed , only transferred. Good luck Bradley Glen ZS5WT South Africa Naturn UHF Repeater system --- nj902 <[EMAIL PROTECTED]> wrote: > > > --- In Repeater-Builder@yahoogroups.com, "Jim B." > <[EMAIL PROTECTED]> wrote: > "... Another thing to think about-the 3 dB power > change ISN'T what > you're hearing. To really compare apples to apples, > you have to > measure the sound output (SPL) change that the 3 dB > change creates> > Jim Barbour > WD8CHL > (yikes)" > ___ > > Huh You must be stuck thinking SSB / AM > > Those 3dB are carrier power. What you are listening > to is the > quality of the demodulated signal at the target > receiving unit. > > It is generally accepted industry practice for path > reliability > projection, e.g. Motorola Coverage Acceptance > Standards, that 4dB > C/N is the point at which an FM communications > receiver delivers 12 > dB SINAD and that 7 dB C/N is the point at which > such a receiver > delivers 20 dB quieting. > > Hence, it follows that a 3dB change in transmitter > power [or > increase in antenna gain OR reduction of path loss] > which will > result in a corresponding 3 dB improvement of > received C/N would be > sufficient to: > > A] take a received signal from 1 dB C/N [unreadable] > to 12 dB SINAD. > > -OR- > > B] Take a received signal from 12 dB SINAD to 20 dB > quieting - a > very noticible audible improvement in DAQ [Delivered > Audio Quality] - > a metric that has been used extensively in radio > coverage > prediction and verification. > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Setting RX and TX audio levels from TDM/ E&M circuits
Hi Steve Just a note on the technology. The best point to point systems I have ever worked on were those with double E/M.(TX ,RX , E , M ,E1 ,M1) Effectively an advancement from the standard 6 Wire , now becomes an 8 wire circuit . The reason I got excited about these systems was that the Engineer who was going to look after these devices had a means to perfect the system for that enviroment. Let me rather give you some examples I have used over the years: With the extra signalling pair in both directions I was able to do a single swith at the remote side and get feedback in the opposite direction (M1 / E1 ) 1-Remotely reset a device 2-Remotely enable a dpdt relay with pad to do an end to end audio check (round trip of the audio link.) 3-Local alarm "Link Failed )By this have a closed loop that if it fails for any reason a local alarm is generated. 4-Remote equipment tamper switch 5-Remote door switch 6-Remote romm temperature exeded. These ideas saved thousands of miles of would be travel per year. The list is much more but I am sure I have explained the just of it. Hope the idea makes you see the idea of simple idea can make the Engineering people deploying that system love your product. Kind regards Bradley Glen ZS5WT --- bradley glen <[EMAIL PROTECTED]> wrote: > > Hi Steve > > Had a brief look at the site and congrats on a well > informed tech type site. > > Regarding the issue of max dev you may want to > experiment with another approach which I use as my > standard for my repeater setups. > Use standard -10 dBm for 60 % dev .(make sure no > clipping) > Generate a high level such as +10 dbm . > Then adjust the dev level for max that your system > wants. > Then reduce level to -10dbm again and double check > it > still corresponds to your 60% requirement. > > My reasonning for doing it this way is: In reality > when a user talks he will never simultainiously > change > the deviation pot in the tx radio. > In reality the only thing that will occur is that > the > user will over-deviate-producing a higher level. > > In some applications a low level compandor circuit > will adjust most levels to the same level. > > In my 20yrs of mil/ commercial / ham repeater > experience , because there are no strict guidelines > accross all radio fields one has to adapt ones own > standard or you will get confused. > > There are some tech documentation availible on the > "Linked ham repeater sites that offer similar > practices-well worth reading. > > Good luck . > > Regards > > Bradley Glen zs5WT node:8300 IRLP > --- Steve Rodgers <[EMAIL PROTECTED]> > wrote: > > > > > > > We are attempting to define an audio level setting > > procedure for the > > Asterisk/app_rpt internet linking project. (See > > www.zapatatelephony.org). > > > > All analog audio is converted to signed linear PCM > > in our controller; even the > > local repeater receiver to transmitter audio path > is > > digital. Since the links > > are digital and there should be little difference > > between nodes, but > > standardizing on a common reference level will > allow > > us to set audio levels > > on all nodes consistently, and to have similar > audio > > levels between nodes. > > > > We just added some code to app_rpt to implement a > > control operator command > > to generate a -10dbm 1004Hz (in signed linear PCM > > format) test tone digitally. > > > > Our proposed procedure is to do the following: > > > > 1. Disable any TX CTCSS source. > > 2. Turn on the tone generator, and crank the tx > > level pot on the repeater > > interface all the way up. > > 3. Adjust the transmitter deviation pot for a hard > > limit on peak deviation at > > 5KHz. > > 4. Back off the tx level pot on the on the > repeater > > interface until it reads > > 3KHz (60% of full deviation). > > 5. Turn off the tone generator. > > 6. Apply a 1KHz tone frequency modulated to 3KHz > on > > the repeater receiver. (No > > CTCSS is preferable, but the codecs attenuate all > > frequencies below 300 Hz > > and with a low PL tone we don't see much > > difference). > > > > 7. Adjust the rx level pot until we see 3KHz peak > > deviation on the repeater > > transmitter. > > > > > > Does anybody see any problems with this approach? > > > > > > Steve > > WA6ZFT > > > > > > > > > > > > On Saturday 29 January 2005 00:39, bradley glen > > wrote: > > > Hi > > > > > > I do not t
Re: [Repeater-Builder] Setting RX and TX audio levels from TDM/ E&M circuits
Hi Steve Had a brief look at the site and congrats on a well informed tech type site. Regarding the issue of max dev you may want to experiment with another approach which I use as my standard for my repeater setups. Use standard -10 dBm for 60 % dev .(make sure no clipping) Generate a high level such as +10 dbm . Then adjust the dev level for max that your system wants. Then reduce level to -10dbm again and double check it still corresponds to your 60% requirement. My reasonning for doing it this way is: In reality when a user talks he will never simultainiously change the deviation pot in the tx radio. In reality the only thing that will occur is that the user will over-deviate-producing a higher level. In some applications a low level compandor circuit will adjust most levels to the same level. In my 20yrs of mil/ commercial / ham repeater experience , because there are no strict guidelines accross all radio fields one has to adapt ones own standard or you will get confused. There are some tech documentation availible on the "Linked ham repeater sites that offer similar practices-well worth reading. Good luck . Regards Bradley Glen zs5WT node:8300 IRLP --- Steve Rodgers <[EMAIL PROTECTED]> wrote: > > > We are attempting to define an audio level setting > procedure for the > Asterisk/app_rpt internet linking project. (See > www.zapatatelephony.org). > > All analog audio is converted to signed linear PCM > in our controller; even the > local repeater receiver to transmitter audio path is > digital. Since the links > are digital and there should be little difference > between nodes, but > standardizing on a common reference level will allow > us to set audio levels > on all nodes consistently, and to have similar audio > levels between nodes. > > We just added some code to app_rpt to implement a > control operator command > to generate a -10dbm 1004Hz (in signed linear PCM > format) test tone digitally. > > Our proposed procedure is to do the following: > > 1. Disable any TX CTCSS source. > 2. Turn on the tone generator, and crank the tx > level pot on the repeater > interface all the way up. > 3. Adjust the transmitter deviation pot for a hard > limit on peak deviation at > 5KHz. > 4. Back off the tx level pot on the on the repeater > interface until it reads > 3KHz (60% of full deviation). > 5. Turn off the tone generator. > 6. Apply a 1KHz tone frequency modulated to 3KHz on > the repeater receiver. (No > CTCSS is preferable, but the codecs attenuate all > frequencies below 300 Hz > and with a low PL tone we don't see much > difference). > > 7. Adjust the rx level pot until we see 3KHz peak > deviation on the repeater > transmitter. > > > Does anybody see any problems with this approach? > > > Steve > WA6ZFT > > > > > > On Saturday 29 January 2005 00:39, bradley glen > wrote: > > Hi > > > > I do not think there is a standard accross all > radio > > systems. > > My experience comming from a telecommunications/ > > microwave background I still use 600 Ohm feeds to > my > > repeaters. > > My standard is -10 dbm for 60% system > > deviation(excluding PL)Remember PL tones are > generally > > attenuated due to the standard telco spec of > > 300-3400hz band pass-anyfrequency outside of this > is > > not guarenteed.This stems from the old analog > > multiplexed systems where guard bands were needed > to > > elliminate crosstalk. > > The reason is simplicity and generally before each > > inpur/output I have balanced pads so I can use my > audi > > test units accurately. > > Most commercial systems have a wide manual setting > > allowing the user to chose their own standard. > > > > Perhaps mention what make of system you are > putting > > together. > > > > Most of my uhf linked systems are all 600 / > balanced > > and uniform. > > > > If you are going this route remember to be careful > > between terminated /unterminated > reading-difference of > > 6dB . > > > > Regards > > > > Bradley Glen zs5WT node:8300 > > UHF linked repeaters linked on UHF.(Naturn) > > > > --- [EMAIL PROTECTED] wrote: > > > When connecting a transmitter and receiver to a > TDM > > > circuit with E&M termination, what is the TX > > > deviation setting for 0DBm of drive at 1004Hz? > > > > > > Most TDM circuits will go to +5dbm before > clipping, > > > so is this extra headroom into account, or is > 0DBm > > > supposed to generate 5KHz of deviation at 1004 > Hz? > > > > > &
Re: [Repeater-Builder] Setting RX and TX audio levels from TDM/ E&M circuits
Hi I do not think there is a standard accross all radio systems. My experience comming from a telecommunications/ microwave background I still use 600 Ohm feeds to my repeaters. My standard is -10 dbm for 60% system deviation(excluding PL)Remember PL tones are generally attenuated due to the standard telco spec of 300-3400hz band pass-anyfrequency outside of this is not guarenteed.This stems from the old analog multiplexed systems where guard bands were needed to elliminate crosstalk. The reason is simplicity and generally before each inpur/output I have balanced pads so I can use my audi test units accurately. Most commercial systems have a wide manual setting allowing the user to chose their own standard. Perhaps mention what make of system you are putting together. Most of my uhf linked systems are all 600 / balanced and uniform. If you are going this route remember to be careful between terminated /unterminated reading-difference of 6dB . Regards Bradley Glen zs5WT node:8300 UHF linked repeaters linked on UHF.(Naturn) --- [EMAIL PROTECTED] wrote: > > > When connecting a transmitter and receiver to a TDM > circuit with E&M termination, what is the TX > deviation setting for 0DBm of drive at 1004Hz? > > Most TDM circuits will go to +5dbm before clipping, > so is this extra headroom into account, or is 0DBm > supposed to generate 5KHz of deviation at 1004 Hz? > > Thanks, > > Steve > WA6ZFT > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] GM300 TX Calibration
Hi All Vrery simple radio with few physical adjustments for one to mess up. >From front to rear of radio-first is the PL / CTCSS adjustment,middle is the Squelch adjustment , last and the one to the rear is the TX max mod. Always adjust max mod before fine adjusting PL / CTCSS. Software it is hard to go wrong and self expanitary. I have other mods for repeater/ link working but I d ont think it is needed here. Regards Bradley Glen ZS5WT --- Steven Passmore <[EMAIL PROTECTED]> wrote: > > I wouldn't mind if you keep it on the list. Sounds > like good information. > I looked through motorola.ca myself and couldn't > find anything other than > some marketing pages in both english and french. > > Steve P. > > - Original Message - > From: "Richard W. Solomon" <[EMAIL PROTECTED]> > To: > Sent: Monday, January 10, 2005 2:17 PM > Subject: RE: [Repeater-Builder] GM300 TX Calibration > > > > > > Where on the site is it ? I couldn't find it. > > > > 73, Dick, W1KSZ > > > > -Original Message- > > From: Warren Beaule [mailto:[EMAIL PROTECTED] > > Sent: Monday, January 10, 2005 2:51 PM > > To: Repeater-Builder@yahoogroups.com > > Subject: Re: [Repeater-Builder] GM300 TX > Calibration > > > > > > > > > > It is all available free from motorola Canada in > > downloadable format Regards Warren VA5WDB > > --- wn1b8 <[EMAIL PROTECTED]> wrote: > >> > >> > >> Greetings, > >> > >> Is there anyone on the list that has an > >> understanding of the soft > >> calibration procedures for the M120/GM300 radios > >> that would be > >> willing to help me? I'd prefer off list to as to > not > >> take up list > >> bandwidth. > >> > >> Thanks, > >> > >> Scott Madison, WN1B > >> > >> > >> > >> > >> > >> > >> > >> > >> Yahoo! Groups Links > >> > >> > >> [EMAIL PROTECTED] > >> > >> > >> > >> > >> > >> > > > > > __ > > Post your free ad now! http://personals.yahoo.ca > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do you Yahoo!? Yahoo! Mail - now with 250MB free storage. Learn more. http://info.mail.yahoo.com/mail_250 Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] DC grounded antennas - ?
J-poles are not antennas of a given impedance-try placing the arrestor in line with a dc-grounded folded dipole and there should be no difference seen on a standard Vswr metre. Brad --- Benjamin Naber <[EMAIL PROTECTED]> wrote: > > afternoon ya'll > > Done a little bit of reading and playing around, > what is an advantage and disadvantage of using DC > gounded antennas? > > One thing I am curious about is why when a > lightning > arrestor is used with a DC grounded antenna, does > the > SWR go up? A while back I installed a lightning > arrestor in line with my j-pole and the SWR went WAY > up - something like a 3 or 4. Just recently I > installed a 5/4 wave shorted stub and the same > thing. > In either case, why would the SWR go up? > > ~Ben, KB9LFZ > > = > - > ~Ben, KB9LFZ > > Got your radio on and "listening?" > Then KEY the radio and say that you are! LET US USE > WHAT WE HAVE!! > > > > > > > __ > Do you Yahoo!? > Yahoo! Mail - Find what you need with new enhanced > search. > http://info.mail.yahoo.com/mail_250 > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do you Yahoo!? The all-new My Yahoo! - What will yours do? http://my.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] tait 2010
Hi If you have a look you can reduce the squelch delay by removing the electrolytic cap around the squelch circuit(hope you have a diagram for the rf platform.).I have done a similar squelch mod with the gm300.Reduces the delay but also increases the chance of falsing. Remember that the higher ctcss frequencies do reduse the decoding time. Regards Brad ZS5WT South Africa --- ian wells <[EMAIL PROTECTED]> wrote: > > > Thank you > Ian Wells > Kerinvale Comaudio > mail service 1017, > Biloela,4715. > www.kerinvalecomaudio.com.au > > - Original Message - > From: "Gareth Bennett" <[EMAIL PROTECTED]> > To: > Sent: 13 November, 2004 5:49 PM > Subject: Re: [Repeater-Builder] tait 2010 > > > > > > Hi Ian, > > What CTCSS freq are you using by the way, (I > hope not 100 Hz?) > > actually yes .sounds like i better find another > frequency > > I'd can the Back to back Rx CTCSS and that would > speed up the link no end. > > What's the linking paths like between your > main repeater and your two > > remote sites? > > reasonably good > > > Your decode times are indeed excessive, also I > wonder what breed is > your > > mobile gear (Tait?) > > all tait t2010 rx and tx > > Icom for instance is VERY slow to decode CTCSS. > > What facilities do you have for test and > measurement? Do you have a > > service monitor or at least a deviation meter and > signal gen that can > > generate CTCSS frequency? > > yes waveteck service monitor 4031 > > > How have you wired your back to back T2010's > (Will they pass CTCSS > > witithout regeneration?) > not sure below - > > S14-1 +13 vdc (switched) (could use S13-12 > unswitched dc) > S14-2+5 vdc > S14-3 COS (+5v goes to 0 volts when active) > S14-4 If you use CTCSS use this pin instead of > S14-3. > S14-6 PTT (0v = transmit ) (ground this pin for > ptt) > S13-3 Receiver audio line out > S13-6 Transmitter audio line in > S13-11 Ground > i also have the s14-4 being used to switch the tx on > all the sites > this is being done via a 4n25 opto ic to drive a > small pnp transistor to > switch the tx on the transmitter > i have wired the s13-3 via a audio level circuit to > s13-6disk audio in > the subtone filters are also enabled on each site > > > Also what PSU are you running? If there is > mains hum (Hence reason NOT > > to use 100 Hz subtone) this will bugger you up no > end. > > i thank you for this bit > -the repeater sites are all solar powered .one link > site is battery powered > with a charger off 240 volt and the other link is > solar powered > > > Just a few questions as starters and we can go > from there :-) > > > > Cheers; > > Gareth Bennett > > Comme Engineer > > Electrix Ltd > > New Zealand HVDC link > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do you Yahoo!? Check out the new Yahoo! Front Page. www.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Tait t800
Hi Jed Used them commercially for many years and many Maritime services use them as a standard. Good sound repeater with many ways to configure and have built in audio AGC -compressor etc. A good choice for a range of different applications. Modular , and there is a slimline type availible. Have a look at the Tait wesite. Regards Bradley Glen ZS5WT --- Jed Barton <[EMAIL PROTECTED]> wrote: > > Hey guys, > I got a phone call last night from one of the clubs > and they want to get > a tait 800 repeater. > I guess they just got a ton of cash, and want to > have some fun. > Any opinions good, bad or indifferent? > Personally I think they could get away with > something like a hipro, but > I am not the deciding factor. > Anyone know how much one of these taits costs? > Any info would be appreciated. > Thanks, > Jed > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] conversion of gm300 to repeater w/out rick..
Hi Tony Yes it is possible and the Rick is a nice ti=o have and not necessary. Some basic passive components you can have a fully functional repeater. Have a look at batlabs site for more info or better go and invest in a manual for the gm300 for accessories connectors and mods.There are different jumpers and more than one kind of controller board. regards Bradley Glen ZS5WT --- tony_aurelio <[EMAIL PROTECTED]> wrote: > > > > has anybody converted 2 gm300 to repeater mode > with-out d rick..a > noise squelch thing..i have seen one working..would > like to know how > its done.. > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __ Do you Yahoo!? Yahoo! Mail Address AutoComplete - You start. We finish. http://promotions.yahoo.com/new_mail Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Simulcast
Hi Randy We used a Zetron model 55 which is a regenerative paging store and forward(imagine a digital parrot repeater.We used it for remote paging zoning but am quite sure it can be used on same frequency as voice . They were reliable and one model 55 Zetronwith a gm300\or m120 was the complete hardware required. I do remember a model 66 which could basically do voice and paging as a remote panel. Regards Bradley Glen ZS5WT --- Randy Elliott <[EMAIL PROTECTED]> wrote: > Hi Gang > > I have an interesting problem that has come to me. A > small Fire Dept. near > me call today and were wondering if I could get them > a Zetron Simplexer. Not > too familiar with it I surmised it was a digital > recorder with a > re-broadcaster. I could be way off in this guess. > Anyway their main problem > is that their main repeater located many miles north > of downtown is > connected via land line from their dispatch center > that is located in the > downtown core. When they activate the pagers the > transmitted signal of > course comes from the repeater, the coverage into > south parts of the town is > very poor in some areas so as a result some peoples > pagers never active. > My question is this, could a low power transmitter > be located at their > dispatch center that would be only keyed when a page > out was initiated? This > would hopefully help coverage into the lower parts > of town. > Hope this makes sense to everyone. Looking forward > to any comments. > > Randy Elliott > > > Randy Elliott > R.E. Communications > 234 Rands Rd. > Ajax, Ontario, Canada > L1S 3Y5 > 905.427.6853 > www.recommunications.ca > [EMAIL PROTECTED] > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > __ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Community Tone panrl
Hi My experience with many panels have found the ones we standardised on was the ZETRON 38 series. We did this with our 19 repeaters purely because of less glitches and they too have a relay option for a given tone eg: external link PTT or light to be switched on etc-or an onite voice recorder for a given tone.This is remotely programmed.The zetron has three options to program-Serial programming via modem and black box switched remotely or at the panel-DTMF over the air-DTMF onsite programming model-8 unit. We had two sites with 7 repeaters at each and the others stand alone.We programmed these sites via the modem and a "Black Box " serial modem switch.Worked great and little problems. I managed to get a spare and am still using it on my main Ham UHF repeater years down the line and still working well. Although I have only mentioned Zetron it is because I have most exposure to this make. Regards Brad --- skipp025 <[EMAIL PROTECTED]> wrote: > Re: CSI and Comm Spec tone panels. > > Both are great panels Joel, I have many of both > types and brands in service. I wish I could say > one is best, but they are both great working > units. > > But... If you buy a used TP-3200, open it up > and make sure it has the reset timer daughter- > board installed. There is a glitch event in > the tp-3200 tone panel software, which causes > it to lockup in certain conditions. The board > is an easy spot, a two or three inch square > mounted on double sided tape (most of the > time). > > Comm Spec will send you a free timer board if > you don't have it inside. The board is a 3 > wire connection, doing a complete reset about > every half hour. > > It took some time for the TP-3200 tone panel > software bug to appear. Under the right conditions, > the panel will lock up and require a hard reset. > Comm Spec has been quick to come up with a > "fix" that works pretty well. > > There are a large number of these panels in service > without the revision timer board. Thank goodness > everyone listened to my suggestion and left their > hardware timeout timer modules installed. :-) > > If you think you might ever do anything related > to commercial two-way radio, I might lean toward > the other CSI Tone Panel, the model TP-163 > > It has one really neat feature that could be > used for an amateur linking and commercial > radio project. > > There is an optional connection (and software > option) for paralleling the tone panel with > another panels TX output line. This is a tx > busy detect line that can be used for a dual > tone panel or radio linking project. > > The busy sense line option monitors a line > for "busy" logic. There are many handy uses > for this function, especially in commercial > radio systems running dual modes. > > This is the only main function the CSI TP-163 > has over its brother the tp-154 or the CSI-3200. > > cheers > skipp > > > > "Joel Mele" <[EMAIL PROTECTED]> wrote: > > I'd like to install a community tone panel on our > group repeater. > I am considering the COM SPEC TP-3200 or the > CONNECT SYSTEMS TP-154. > > > > Can any one reccommend which unit to use ? > > > > TNX...Joel W4SLH > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > __ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] tait t2010
Hi Reverse burst is ani-phasing of the pl for about 100ms.Only used on mechanical reed pl units as in the old micors. Regards Brad ZS5WT --- ian wells <[EMAIL PROTECTED]> wrote: > the rev burst wasn't enabled but i tried it enabled > and nothing > happened.thanks for the sugestion > Thank you > Ian Wells > Kerinvale Comaudio > mail service 1017, > Biloela,4715. > www.kerinvalecomaudio.com.au > 1-email- [EMAIL PROTECTED] > 2-email- [EMAIL PROTECTED] > - Original Message - > From: "russ" <[EMAIL PROTECTED]> > To: > Sent: Saturday, July 24, 2004 10:47 AM > Subject: Re: [Repeater-Builder] tait t2010 > > > > Give this a try, > > Turn off the rev. burst. > > 73 Russ, > > - Original Message - > > From: "ian wells" <[EMAIL PROTECTED]> > > To: > > Sent: Friday, July 23, 2004 6:17 PM > > Subject: [Repeater-Builder] tait t2010 > > > > > > > > > > hi guys > > > i am wondering if there is a way to setup or to > program a t2010 to > > transmit > > > a tail without the ctcss tail on the end of a > transmission (ie to be > used > > as > > > the transmitter in a a repeater so while the > receiver receives a signal > > it > > > activates the t2010 transmitter with a ctcss > ,and when the receive > signal > > > ceases the transmitter continues with a 1-2 > second tail without the > > > ctcss ).At the moment i have 2 t2010 connected > direct through so while a > > > signal is received the transmitter transmitts > with the ctcss > > > Thank you > > > Ian Wells > > > Kerinvale Comaudio > > > mail service 1017, > > > Biloela,4715. > > > www.kerinvalecomaudio.com.au > > > 1-email- [EMAIL PROTECTED] > > > 2-email- [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > __ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] tait t2010
Hi Ian Yes it is possible. You will have to add an inexpensive additional ctcss encoder.Link the cos of the reciever to both the transmitter and the tone board.If you you have experience in ctcss board installtions it should be straight forward.After that with the help of a schematic follow the PTT line until you can add a simple CAPACITOR electrolitic -normalli\y on the input to a switching opamp. The second way is to allow the transmitter to ptt with a tail-use the cos line to "mute" the ctcss tone in and around the sub audible pot on the txco board. Good luck Regards Bradley Glen ZS5WT --- ian wells <[EMAIL PROTECTED]> wrote: > > hi guys > i am wondering if there is a way to setup or to > program a t2010 to transmit > a tail without the ctcss tail on the end of a > transmission (ie to be used as > the transmitter in a a repeater so while the > receiver receives a signal it > activates the t2010 transmitter with a ctcss ,and > when the receive signal > ceases the transmitter continues with a 1-2 second > tail without the > ctcss ).At the moment i have 2 t2010 connected > direct through so while a > signal is received the transmitter transmitts with > the ctcss > Thank you > Ian Wells > Kerinvale Comaudio > mail service 1017, > Biloela,4715. > www.kerinvalecomaudio.com.au > 1-email- [EMAIL PROTECTED] > 2-email- [EMAIL PROTECTED] > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > __ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Micor UHF Channel Elements
--- Neil McKie <[EMAIL PROTECTED]> wrote: > > Receiver: KXN1024A > > Transmitter/exciter: KXN1052A > > Hi Niel Check the circuit diagrams of the TX and RX and compare. __ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Stuck Repeater
Hi Normally most of the zetrons have a default of, any dtmf key greater than 15 seconds will reset the basic problems.You may try this. REgards Brad ZS5WT --- "John J. Riddell" <[EMAIL PROTECTED]> wrote: > My suggestion would be to get a telephone line > controller that will answer > an incoming call > at your site, then you can disable the repeater via > the phone line until > you can get access. > > A company called B&L Electronics in Ottawa, Ill > sells these devices. > > John VE3AMZ. > - Original Message - > From: "rtoplus" <[EMAIL PROTECTED]> > To: > Sent: Thursday, June 10, 2004 3:01 AM > Subject: [Repeater-Builder] stuck repeater > > > | Greetings from NC at 2:45AM > | > | After arising at about 2:00 AM for a nature call, > I noticed on my > | scanner, an un-modulated signal. I turned on the > lights in the > | house to check the channel on the scanner. > Damnit, it's my 2 meter > | repeater! I don't know how long its been keyed up > cause I've been > | sleeping (not anymore tonight). I attempted to > disable the > | controler (zetron model 37) and got all the right > response codes but > | the repeater is still chugging right along. It > has a 3 minute > | timeout timer set on the controller and the morse > ID is set for 10 > | minutes. Its been about 45 minutes since I've > been up and no ID and > | no timeout. I'm not sure if the repeater > (msr2000) has the stock > | timeout timer card still installed or not, I can't > remember. There > | is nothing I can do at this hour as the repeater > is a business > | rooftop installation with no access until 10:00AM. > My thoughts are > | that my controller went south cause I can key the > repeater and hear > | the courtesy beep when I unkey but I still get no > morse ID and also > | I also totally reset the controller to the factory > defaults and the > | repeater still stays keyed. I'm surprised my PA > hasn't burned up > | yet...intermittant duty set at about 55 watts. > Any thoughts from > | you folks at what other things I might look for in > the AM? > | > | > | Thanks a bunch > | > | Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892 > > John J. Riddell, VE3AMZ > 451 Cedarcliffe Dr., > Waterloo, Ontario, Canada > N2K 2J1 __ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Remote Base Project
Hi Kevin I run a star uhf linked system all on uhf between 430-440 here in South Africa , both the repeaters 439/431 and link 434/433 .I have had success with this but there are many factors influencing the end result . Regards Brad ZS5WT --- Kevin Custer <[EMAIL PROTECTED]> wrote: > Ken Arck wrote: > > >At 09:15 PM 5/21/2004 -0500, you wrote: > > > > > > > >>Would there be any advantage to putting the radio > in an RF box for > >>shielding? > >> > >> > > > ><---The short answer? Only if you put the > antenna(s) in a shielded box too. > > > >You're asking too much of physics by trying to run > a remote base on the > >same band as your repeater :-) > > > > I disagree. One of my lower powered 2 meter > repeaters will successfully > remote base at the next channel, 15 kc away. I use > about 100 feet of > vertical separation, hand tuned to find the null, > and a nice clean link > radio. The link radio is a ICOM 2-AT and I run it > at 200 mW most of the > time. One thing to remember is you usually don't > need much power when > linking from a repeater site, so, use as little as > necessary. > > Kevin > __ Do you Yahoo!? Yahoo! Domains Claim yours for only $14.70/year http://smallbusiness.promotions.yahoo.com/offer Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Frustration with coaxial collinear matching-uhf
Hi Ok skipp that would be great. The versions I have been trying are from bottom to top: 1/4 ,1/2 times 4,1/4 coax , 1/4 freespace element. Regards Brad --- skipp025 <[EMAIL PROTECTED]> wrote: > OK, but I'm not sure if the "first element" is the > top or the bottom. The more popular coaxail types > use a freespace 1/4 wave radiator at the top. > The bottom 1/4 radiator is used to decouple the > feed line (prevent feed line radiation). > > You also have to pay attention to the coax type > and specs for proper lengths. > > One project version I've seen in the Brown Cover > (older) ARRL Antenna Handbook has a nice project > detailed. Of specific note is the testing during > construction of shorter sections, before the entire > antenna is constructed. > > The mentioned version has both the top and bottom > 1/4 sections as detailed above. > > If you're really into this, maybe one of us > (including myself) would be able to scan & Email > the ARRL project antenna for you. > > cheers > skipp > > --- In Repeater-Builder@yahoogroups.com, bradley > glen > <[EMAIL PROTECTED]> wrote: > > Hi Skipp > > > > Using coaxial-type and have tried both the coax > and > > solid screen by way of solid copper sleeving over > > centerwith dielectric from rg-213. > > > > My question is that there seems to be very > different > > thoughts on the first element-some use 1/4 and > others > > use 1/2. > > Every article-design seems to state that there > antenna > > works well or better than antenna X or Y. > > Of all the designs none have substantiated the > design > > with an analyser of any kind -all are going on > only > > VSWR readings.Good VSWR does not mean good antenna > . > > > > Kind regards > > > > Bradley Glen ZS5WT > > --- zip14225 <[EMAIL PROTECTED]> wrote: > > > Bradley, > > > > > > I'm not sure what type of the many collinear > > > antennas you're trying to match. Are you working > > > > on a coaxial type or an aluminum tube type. > > > > > > Many collinear type antennas can be broken into > > > sections and matched at each section. You give > > > us a bit more info, we'll give you a few more > > > thoughts. > > > > > > cheers > > > skipp > > > > > > > bradley glen <[EMAIL PROTECTED]> wrote: > > > > Hi > > > > > > > > Anyone had further development with a decent > > > matching > > > > design that is constant . > > > > > > > > I have made several designs of which none seem > to > > > be > > > > consistant and reliable in matching .The > designs > > > on > > > > the web are : feed straight onto the first > > > halfwave > > > > element-others have a quarter wave section > before > > > the > > > > first half wave element.one feeding a high > Z-other > > > one > > > > feeding a low Z.??? > > > > > > > > I am using a sitemaster-Anritsu s331-c and not > a > > > > simple vswr meter. > > > > > > > > Regards > > > > > > > > Bradley Glen ZS5WT > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > __ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Frustration with coaxial collinear matching-uhf
Hi Skipp Using coaxial-type and have tried both the coax and solid screen by way of solid copper sleeving over centerwith dielectric from rg-213. My question is that there seems to be very different thoughts on the first element-some use 1/4 and others use 1/2. Every article-design seems to state that there antenna works well or better than antenna X or Y. Of all the designs none have substantiated the design with an analyser of any kind -all are going on only VSWR readings.Good VSWR does not mean good antenna . Kind regards Bradley Glen ZS5WT --- zip14225 <[EMAIL PROTECTED]> wrote: > Bradley, > > I'm not sure what type of the many collinear > antennas you're trying to match. Are you working > on a coaxial type or an aluminum tube type. > > Many collinear type antennas can be broken into > sections and matched at each section. You give > us a bit more info, we'll give you a few more > thoughts. > > cheers > skipp > > > bradley glen <[EMAIL PROTECTED]> wrote: > > Hi > > > > Anyone had further development with a decent > matching > > design that is constant . > > > > I have made several designs of which none seem to > be > > consistant and reliable in matching .The designs > on > > the web are : feed straight onto the first > halfwave > > element-others have a quarter wave section before > the > > first half wave element.one feeding a high Z-other > one > > feeding a low Z.??? > > > > I am using a sitemaster-Anritsu s331-c and not a > > simple vswr meter. > > > > Regards > > > > Bradley Glen ZS5WT > > > > > > > > > > __ > > Do you Yahoo!? > > Win a $20,000 Career Makeover at Yahoo! HotJobs > > > http://hotjobs.sweepstakes.yahoo.com/careermakeover > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > __ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Frustration with coaxial collinear matching-uhf
Hi Joe Using hobby brass as you have . I have not tried the 1/4 wave stub as of yet.Read Kevins article-before. All these designs seem to backed up for a VSWR and that is why my question-low imp feed with first element 1/4 or first element 1/2 wave. Thanks Brad --- Joe <[EMAIL PROTECTED]> wrote: > How many elements in your antenna? I found at least > 8 elements are needed > before > the SWR is low. I used a 1/4 wave stub instead of > the open balun seen on > some designs and hobby brass to construct the > elements. I found brass > easier to > use than coax for UHF. Check out Kevin's article. > It's probably on the web > site. > > Hope this helps, Joe > > > At 03:45 PM 4/30/2004 -0700, you wrote: > >Hi > > > >Anyone had further development with a decent > matching > >design that is constant . > > > >I have made several designs of which none seem to > be > >consistant and reliable in matching .The designs on > >the web are : feed straight onto the first halfwave > >element-others have a quarter wave section before > the > >first half wave element.one feeding a high Z-other > one > >feeding a low Z.??? > > > >I am using a sitemaster-Anritsu s331-c and not a > >simple vswr meter. > > > >Regards > > > >Bradley Glen ZS5WT > > > > > > > > > >__ > >Do you Yahoo!? > >Win a $20,000 Career Makeover at Yahoo! HotJobs > >http://hotjobs.sweepstakes.yahoo.com/careermakeover > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > __ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Frustration with coaxial collinear matching-uhf
Hi Anyone had further development with a decent matching design that is constant . I have made several designs of which none seem to be consistant and reliable in matching .The designs on the web are : feed straight onto the first halfwave element-others have a quarter wave section before the first half wave element.one feeding a high Z-other one feeding a low Z.??? I am using a sitemaster-Anritsu s331-c and not a simple vswr meter. Regards Bradley Glen ZS5WT __ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Decibel repeater antenna question......
Hi All Thanks to all for the many responses to my questions. I see many different ideas on the feed impedance of the dB224 and dB420 stacked dipoles. I have seen that the inpedance of a standard folded dipole (300 Ohm ) lowered when brought in close proximity to the mast. What is the recommended spacing between the uhf and vhf to the mast to go on the 100 Ohm impedence area ? Has antone done a antenna shootout between these antennas and other stacked arrays ? Regards Bradley Glen ZS5WT --- Tony King - W4ZT <[EMAIL PROTECTED]> wrote: > You may find this link helpful when looking at the > matching harness for > these dipoles: http://www.w4dex.com/ant.htm > > It's appeared here before but will be helpful to see > it again. > > 73, > Tony W4ZT > > At 01:52 AM 4/18/2004, you wrote: > > >--- Chuck Kelsey <[EMAIL PROTECTED]> wrote: > > > Just curious... how did you determine that each > > > element was 50 ohms? > > > > > > I was always of the understanding that the > Decibel > > > design, each element was > > > 100 ohms. Also, that the later versions of > Decibel > > > arrays used 50 ohm and 35 > > > ohm cable, no 75 ohm stuff. > > > > > > Chuck > > > WB2EDV > > > > > > > > > > > > - Original Message - > > > From: "Al Wolfe" <[EMAIL PROTECTED]> > > > To: > > > Sent: Saturday, April 17, 2004 6:20 PM > > > Subject: [Repeater-Builder] Re: Decibel repeater > > > antenna question.. > > > > > > > > > > I've worked on a great many of these types > of > > > antenna arrays in the > > > last > > > > 35+ years and every one had an impedance of 50 > > > ohms at the individual > > > > element. An odd multiple of a 1/4 wavelength > of 75 > > > ohm coax takes it to > > > 100 > > > > ohms. When stacking elements two 100 ohm loads > in > > > parallel are 50. Then do > > > > it again for four bays, again for eight, etc. > > > > > > > > In free space their impedance would be > higher, > > > but they are designed > > > to > > > > work only a few inched from a mast pipe and > > > normally the elements are > > > fairly > > > > fat in terms of diameter to length ratio > Hence > > > the nominal 50 ohm > > > > impedance. > > > > > > > > Another scheme was to use two bays, make > the > > > feed line from each bay a > > > > piece of 50 ohm cable, the length being > > > unimportant other than being > > > equal, > > > > and tying them together for 25 ohms. Then a > > > special 35 ohm 1/4 wave piece > > > of > > > > line brought it back to 50 ohms. Two pieces > of 75 > > > ohm cable in parallel > > > > would do the same transformation but can be > messy > > > to fabricate. > > > > > > > > YMMV, though, > > > > > > > > 73, Al K9SI > > > > > > > > > > > > > > > > Judging from the cable and the lengths listed, > > > each > > > > dipole must present a 100 ohm impedence, not > 50, > > > > assuming the data is correct. > > > > > > > > > > > > > > > > > > >IF the lengths and types of coax are correctly > >represented by the web article (and I don't know > that > >for a fact) THEN the impedence would work out to > 100 > >ohms per bay. 50 ohm impedence per bay does not > work > >out correctly, given the info from the web site. > > > >http://www.kc5dgc.net/db224.htm > > > >Taking their measurements, all coax sections are > "Q" > >sections, or impedence transformers. A 75 ohm Q > >section will transform 50 to 100 ohs OR 100 to 50 > >ohms. A 35 ohm q section will transform 50 ohms to > 25 > >ohms OR 25 ohm to 50 ohms. > > > >Now, you can start from either end if you know the > >impedence. Since we know this antenna is 50 ohms at > >the feed point, and from there it goes through a 35 > >ohm Q section, the impedence at the first tee would > be > >25 ohms. Since 2 cables are in parallel at this > tee, > >each cable (at that point) must represent 50 ohms > (2 > >50 ohm resistors paralleled give 25 ohms). Now you > can > >take either leg at this point, since the top pair > and > >the bottom pair are identi
RE: [Repeater-Builder] Decibel repeater antenna question-unbalanc ed radiating loops
Thanks Roger Looking at the suggestions it seems to me that if you do the calculations the antennas could be designed at 100 OHM feed impedance. Taking into account that you use 75 throughout the harness-antennas =100 Ohm Z . If anyone can comment further on the harness as I am going on assumed givens as I do not have one to confirm this. Regards Brad ZS5WT --- "Rogers, Ron" <[EMAIL PROTECTED]> wrote: > Yep folks, these are commonly referred to as > "Phasing Harnesses" just like > we use in the contest circles to stack multiple > antennas and phase them so > the feed point impedance still "sees" 50 ohms at > the design frequency. > > Ron Rogers > -WB8ERB- > > -Original Message- > From: Steve Grantham [mailto:[EMAIL PROTECTED] > Sent: Thursday, April 15, 2004 3:14 PM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] Decibel repeater > antenna question-unbalanced > radiating loops > > > I think you will find that the feed point is 50-Ohms > when feeding one of > these single unbalanced dipole elements. The > harness is for making the > multiple elements on the array look like one element > to the transmission > line. Look at their (DB's) folded unipole antenna > for low band. It's a > ground-plane antenna with a similar radiating > element that's fed with 50-Ohm > line. The difference is that it's got radials on it > instead of a mirrored > counterpoise. There may be other subtle > differences, but... > > Steve, aa5sg > > - Original Message - > From: Paul Guello <mailto:[EMAIL PROTECTED]> > To: Repeater-Builder@yahoogroups.com > <mailto:Repeater-Builder@yahoogroups.com> > Sent: Thursday, April 15, 2004 1:19 PM > Subject: Re: [Repeater-Builder] Decibel repeater > antenna question-unbalanced > radiating loops > > There are not any baluns on these antennas. If I > remember right, they use > 75 ohm coax on each bay (odd multiples of quarter > wave length) and 35 ohm > coax on the feed (again odd multiples) to match the > impedance to 50 ohms. > This info was on the group a while back, somebody > must still have it. > > Paul, kb9wlc > > > > Mathew Quaife < [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > wrote: > > Would a close up pic of a DB304 work for your needs, > or I have the DB420 > there as well. > > Mathew > > > bradley glen <[EMAIL PROTECTED]> wrote: > > Hi > > I have been studying the db stacked array and the > bayed array seems to use unbalanced dipoles as the > radiators .I have tried to find a close up view of a > single dipole so I can confirm my ideas. > > If anyone has some good tech info on these antennas > I > would appreciate the info. > > It would make sense to " by-pass " the need of > baluns > for each dipole -cost and balun loss? > > Regards > > Brad > ZS5WT Repeater Owner > [EMAIL PROTECTED] > > > > > > > __ > Do you Yahoo!? > Yahoo! Tax Center - File online by April 15th > http://taxes.yahoo.com/filing.html > > > > > > Yahoo! Groups Links > > > > > > > > > _ > > Do you Yahoo!? > Yahoo! Tax Center - File online by April 15th > <http://taxes.yahoo.com/filing.html> > > > > > > > > > > _ > > Do you Yahoo!? > Yahoo! Tax Center - File online by April 15th > <http://taxes.yahoo.com/filing.html> > > > > > > > > > > > > > > _ > > Yahoo! Groups Links > > > * To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > <http://groups.yahoo.com/group/Repeater-Builder/> > > > * To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > > > > * Your use of Yahoo! Groups is subject to the Yahoo! > Terms of Service > <http://docs.yahoo.com/info/terms/> . > > > __ Do you Yahoo!? Yahoo! Tax Center - File online by April 15th http://taxes.yahoo.com/filing.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Decibel repeater antenna question-unbalanced radiating loops
Hi Guys Thanks for the notes -all noted and apppreciated. A close up of any of the db open systems , especially the close up of a single element would be greatly appreciated. I have done many searches on repeater antennas and it seems like the vhf\uhf standard in the USA is decibel . In my past company we did use the ASP series of 2 and 4-stacks-we outshined the competition by far -I always said it were decent antennas. I have made some single antennas years ago with some success using that very same principle.By reducing the folded dipole to mast(reflector) one decreases the feed impedance so by the comments from you , the harness ends with 75 Ohm coax onto the element it now makes some sense. I did recover one db-224 from a remote site which was damaged due to water (black death) right through. With so many of Db antennas used there should be a dedicated forum to "Repeater Antennas ". Kind regards Bradley GlenZS5WT --- Steve Grantham <[EMAIL PROTECTED]> wrote: > I think you will find that the feed point is 50-Ohms > when feeding one of these single unbalanced dipole > elements. The harness is for making the multiple > elements on the array look like one element to the > transmission line. Look at their (DB's) folded > unipole antenna for low band. It's a ground-plane > antenna with a similar radiating element that's fed > with 50-Ohm line. The difference is that it's got > radials on it instead of a mirrored counterpoise. > There may be other subtle differences, but... > > Steve, aa5sg > - Original Message - > From: Paul Guello > To: Repeater-Builder@yahoogroups.com > Sent: Thursday, April 15, 2004 1:19 PM > Subject: Re: [Repeater-Builder] Decibel repeater > antenna question-unbalanced radiating loops > > > There are not any baluns on these antennas. If I > remember right, they use 75 ohm coax on each bay > (odd multiples of quarter wave length) and 35 ohm > coax on the feed (again odd multiples) to match the > impedance to 50 ohms. This info was on the group a > while back, somebody must still have it. > > Paul, kb9wlc > > > > Mathew Quaife <[EMAIL PROTECTED]> wrote: > Would a close up pic of a DB304 work for your > needs, or I have the DB420 there as well. > > Mathew > > > bradley glen <[EMAIL PROTECTED]> wrote: > Hi > > I have been studying the db stacked array and > the > bayed array seems to use unbalanced dipoles as > the > radiators .I have tried to find a close up > view of a > single dipole so I can confirm my ideas. > > If anyone has some good tech info on these > antennas I > would appreciate the info. > > It would make sense to " by-pass " the need of > baluns > for each dipole -cost and balun loss? > > Regards > > Brad > ZS5WT Repeater Owner > [EMAIL PROTECTED] > > > > > > > __ > Do you Yahoo!? > Yahoo! Tax Center - File online by April 15th > http://taxes.yahoo.com/filing.html > > > > > > Yahoo! Groups Links > > > > > > > > > Do you Yahoo!? > Yahoo! Tax Center - File online by April 15th > > > > > > > > > -- > Do you Yahoo!? > Yahoo! Tax Center - File online by April 15th > > > > > > > > -- > Yahoo! Groups Links > > a.. To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > b.. To unsubscribe from this group, send an > email to: > [EMAIL PROTECTED] > > c.. Your use of Yahoo! Groups is subject to the > Yahoo! Terms of Service. > > __ Do you Yahoo!? Yahoo! Tax Center - File online by April 15th http://taxes.yahoo.com/filing.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Decibel repeater antenna question-unbalanced radiating loops
Hi I have been studying the db stacked array and the bayed array seems to use unbalanced dipoles as the radiators .I have tried to find a close up view of a single dipole so I can confirm my ideas. If anyone has some good tech info on these antennas I would appreciate the info. It would make sense to " by-pass " the need of baluns for each dipole -cost and balun loss? Regards Brad ZS5WT Repeater Owner [EMAIL PROTECTED] __ Do you Yahoo!? Yahoo! Tax Center - File online by April 15th http://taxes.yahoo.com/filing.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] dual polarisation uhf repeater antenna
In th the process of making my tests on a dual polaarisation antenna for my uhf repeater (one of many). I am persueing something that I should have done a long time ago.I have had reasonable success with opting for a site that needed 270deg coverage which made what I have done within reason. I have taken a standard commercial 4-stack-removed the top dipole-replaced it with a 6dB collinear for the vertical polarisation. The remaining three folded dipoles I have place in the horizontal pane at 0-90-180.(still experimenting with the spacing) The idea and theory is to reduce the deep nulls in mobile and portable comms. I would like to hear from anyone that has any comments and experience in doing this-suely I can not be the first to do so. I have a keen interest in dual pol antenna arrays so if you have any articles I would appreciate the sitesand your comments. Regards Brad Node : 8300 __ Do you Yahoo!? Yahoo! Tax Center - File online by April 15th http://taxes.yahoo.com/filing.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] This is serious, yeah right!
Been in the radio field for all my life and now GSM engerneering. This link is not only for the real stupid but unfortunately it sounds like a radical type of mentality. My only concern is that for each of these types , there are thousands that want to follow for the lack of knowledge (or IQ. What a joke. Thats all folks-but dont we all have the freedom to express anything. By the way I sell jelly beans that work more efficiently than that product related to that link , except one has to eat them and not bury them.This save you time and energy going to all the towers in the area . Kind regards Brad Alien by nature --- Paul Finch <[EMAIL PROTECTED]> wrote: > Hello, > > Someone found this URL over on a Tower related > message board, thought you > guys may like to see this and what kind of nut cases > are out there that are > doing whatever they can to disrupt the tower > industry. Check out the web > address below. > > Paul > > http://www.tearingdownstrongholds.com/ > __ Do you Yahoo!? Yahoo! Tax Center - File online by April 15th http://taxes.yahoo.com/filing.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Audio Reproduction
As audio is discussed over and over often I see there is less and less content in the answers. I have a question . I run several repeaters all employing pre-de-emph as per standard to a star network. What is the major decision between going "flat " or shaped audio? I would take it that running up of the repeater and links is a breeze as it is what goes in must come out . Thanks Brad __ Do you Yahoo!? Yahoo! Small Business $15K Web Design Giveaway http://promotions.yahoo.com/design_giveaway/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: DB-304 & DB-420 Product Manuals
What balun setup do those antennas use? Is there anywhere that one can download a technical manual on these antennas?We used the ASP 2 and 4 stacks for many years on VHF and out preformed all our competitors. Brad --- Mathew Quaife <[EMAIL PROTECTED]> wrote: > will see what happens this weekend. > > - Original Message - > From: "Chuck Kelsey" <[EMAIL PROTECTED]> > To: > Sent: Wednesday, March 31, 2004 7:36 PM > Subject: Re: [Repeater-Builder] Re: DB-304 & DB-420 > Product Manuals > > > > I agree. Try it "as is." I'm running a DB-411 (4 > elements all pointed in > one > > direction) with good SWR on 442.75. > > > > Chuck > > WB2EDV > > > > > > > > - Original Message - > > From: "Laryn Lohman" <[EMAIL PROTECTED]> > > To: > > Sent: Wednesday, March 31, 2004 10:28 PM > > Subject: [Repeater-Builder] Re: DB-304 & DB-420 > Product Manuals > > > > > > > Mathew, we're using a DB420 on 443.825 > unmodified, and it could not > > > work any better. SWR is very good, and > performance--great. I have > > > not used one of these at 442.0mc. Maybe someone > on the list is using > > > one near there I would think carefully > before adding anything to > > > the dipoles. I'm not convinced that any mods > are necessary. > > > > > > There are no tuning adjustments either. > > > > > > Laryn K8TVZ > > > > > > > > > --- In Repeater-Builder@yahoogroups.com, Mathew > Quaife <[EMAIL PROTECTED]> > > > wrote: > > > > Possible to get a copy, actually all I need to > know is what needs > > > to be > > > > done, if anything to bring the SWR down to use > it at > > > 442.000/447.000. > > > > Thanks. > > > > > > > > Mathew > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > __ Do you Yahoo!? Yahoo! Small Business $15K Web Design Giveaway http://promotions.yahoo.com/design_giveaway/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Generating COR signal
Hi Sounds like you need a VOX unit to tap audio into and that will give you a COR with hangtime (vox delay) etc. There are circuits on the web. A second way if you can use CTCSS which will be more stable as in the quiet periods that a person does not talk you may get dropout. Use a CTCSS decoder analog board off the disc. and the detection of the correct tone will usually give you an open collector output. Regards Brad --- bsoutheyoz <[EMAIL PROTECTED]> wrote: > I am having trouble generating a COR / COS signal > for my new cross- > band repeater project. I do not want to pull my > expensive > transceiver apart to try and locate an internal COR > circuit. > > I have seen several commercial circuits that > generate a COR singnal > based on logic that detects a drop in RF noise when > a carrier is > detected (receiver squelch always open) but this > will obviously only > function properly on FM. > > Most repeater controllers seem to require a 3 V or > better input > signal change to key COR. I guess even high-level > speaker audio out > will not be sufficient to generate this voltage > (??), so my question > is : > > does anybody know of a cheap repeater controller > that will generate a > COR signal with audio in only? > > Thanks in advance, > > Brendan > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > __ Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time. http://taxes.yahoo.com/filing.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Mountain top upside down antenna mounting info
Hi All Some time back I did do that same-upside down collinear-my theory was with the slight uptilt given to general collieas I tried it upside down and it worked very well. Loss of main RF radiation in the horizon is in essance the same as the majority of the radiation is from the first radiating element ie: the base of the collinea. The second theory is by using an antenna slightly off frequency that in itself will cause slight up-or-down tilt by a small degree. The good thing with mounting it upside down is that in "most "repeater installations there is always a less important direction that does not need full gain so the offset mounting becomes in your favour as in the case of stacked dipole arrays. There is of course no harm in mounting two collinears via wilkonson divider -first in up right and the second on the upside down position. One thing I have always tried -time permitting and that is to test with a good 0dB gain antenna to get a good reference. regards Bradley ZS5WT --- John Everson <[EMAIL PROTECTED]> wrote: > --- In Repeater-Builder@yahoogroups.com, Kevin > Custer <[EMAIL PROTECTED]> wrote: > > > I had excellent results with a Hustler G6-440 > (uhf) station antenna > side > > mounted and upside down on Mt. Davis (the highest > point in > Pennsylvania). > > Shadowing of the tower was no different than when > it was mounted > > upright, just better coverage down in the valleys. > > > > Kevin Custer > > 443.725+ Mt. Davis PA. > > In the past I have wondered if anyone has ever tried > to do this with > one antenna mounted upside down and another mounted > right side up, one > directly above the other, and fed in phase? > Interesting, No? > > Comments appreciated. > > John ab6li > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > __ Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time. http://taxes.yahoo.com/filing.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Why need a commercial community tone board ?
Hi Jim I run a whole linked system on UHF and also two VHF repeaters for my local club. I have repeater panels on my main repeater unfortunately not enough to do all but there is a simple reason for repeater panels-especially commercial ones. I use the ZETRON 38A which has many features too long to go into but the basics are here: Management-Management-Management. With DTMF if sitting at home or RS232 when at the site via a laptopI can do the following. Enable/disable the repeater External relay swithching on given CTCSS \ DCS(ideal for switching in a PA or preamp etc. Program all the standard features such as each of the 50 tones as users or cross tone-change the lengh of the tail-good for linkingetc. Provide a good way to see airtime usage-CW id-good for multiple groups such as emergency radios that do not want to listen to general chat. For testing I can remotely generate any single tone and DTMF digit on command. I can also enable the ANTI-KERCHUNK filters which is very handy. And the list goes on. It is fine to run to the one repeater you own every time it coughs and needs some testing-rEMEMBER FOR US THAT HAVE 11 REPEATERS IT IS WORK-SMART . If you can not get hold of a repeater panel you may want to look at a more simple approach such as NHRC pic repeater controller for the very simple and reliable approach. Kind regards Bradley Glen ZS5WT --- "Jim B." <[EMAIL PROTECTED]> wrote: > jfrohoff wrote: > > >>>Also add a commercial community tone board > >>>with DCS to keep things orderly. > > > > > > Can anyone explain the need for a community tone > board and DCS? I > > understand that some radios allow us to use the > digital coded > > squelch, but why the community tone board? Best I > can tell from > > researching them on the net (and on > repeater-buider site) is that > > they are used when a repeater owner wants to track > usage by different > > groups of people, each assigned a different CTCSS > code or DCS code > > (?), sometimes used for billing purposes. > > > > I am building up a first-time UHF reapeater/remote > for local > > emergency use but am now a bit confused as to > whether I am best to > > buy a simple CTCSS decoder or a whole "community > panel"? > > > > Equipment obtained thus far is a Kenwood UHF > TKR-850 repeater radio > > with Decible Products Duplexer. Thanks in advance > for any comments. > > Jim K7RNR > > > > The primary purpose is to allow the use of more than > one tone/code on > the same system. This is all earlier tone panels > would do. > Secondary purposes, usually reserved for newer > panels, include usage > counts, CW identifiers, and remote control, either > DTMF over the air, or > by RS-232/modem. > Your TKR-850 will do just fine as long you don't > care about usage stats > or remote control (I'm not too familiar with the > -850 to know it's > capabilities, but the -820 was just a basic 8-tone > board with > time-out-timer, no other functions.) > > -- > Jim Barbour > WD8CHL > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > __ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Hybrid Ring Duplexers-Microwave usage
Hi I do have some info but am in a state of go-between into my new radio shack and all is in boxes. For additional info you may want to look under "microwave RF "designs and companies that produce microwave components.All the digital radio channels in long haul microwave systems use rings in their antenna branching (similar to combining) . >From memory there are two paths from the input-one path has a low insertion loss and the other a high insertion loss. there is usually an impedence matching r / L / C circuit to match and the resistor is to broaden the resonance( extremely deep null). In the one path there is a cavity.My rings were made of semi-rigid to minimise leakage-braid is too unstable. They were a challenge and due to the deep nulls extreme temperature changes can affect the workings severely.Thet are challenging to maintain 100 %. Since due to the tower seperation I have resorted to sperate antennas-X200-N and only one RX cavity and all has been working well for years this way. Rings do have up to 4 dB loss- design dependant. Regards Bradley Glen ZS5WT --- w4rfj <[EMAIL PROTECTED]> wrote: > Hi I am looking for information on Hybrid Ring > Duplexers... I have > looked on the Web and in the ARRL Handbooks that I > own and no Info... > I am interested in learning / analyzing how they > work Does anyone > have any info on How to build / or How a Hybrid Ring > Duplexer works? > > Thanks in advance! > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > __ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] circulators
Hi Just a reminder that one has to use a filter after the circulator as the materials used are inherent 2nd harmonic generators.A 2nd harmonic filter or cavity will be placed to assist for a clean signal. regards Brad ZS5WT --- Johnny <[EMAIL PROTECTED]> wrote: > I know what you are saying. I picked up 3 from this > guy a few weeks ago. > Johnny > > > Russ Stafford wrote: > > We use them on EVERY transmitter in our system! > > Some tower owners require them. > > It is a great idea to use a circulator it solves > many problems before they > > are a problem. > > 73 Russ, W3CH > > Trustee, W3PS > > Metro-Comm repeater > > network. > > > > > > - Original Message - > > From: "Johnny" <[EMAIL PROTECTED]> > > To: > > Sent: Sunday, January 25, 2004 3:10 PM > > Subject: [Repeater-Builder] circulators > > > > > > > >> > >>There was some discussion on the list awhile back > about circulators. > >>I ran across this in my surfing. > >> > >> > > > > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3073999106&category=1502 > > > >> > >> > >> > >> > >> > >>Yahoo! Groups Links > >> > >>To visit your group on the web, go to: > >> http://groups.yahoo.com/group/Repeater-Builder/ > >> > >>To unsubscribe from this group, send an email to: > >> [EMAIL PROTECTED] > >> > >>Your use of Yahoo! Groups is subject to: > >> http://docs.yahoo.com/info/terms/ > >> > >> > >> > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > To visit your group on the web, go to: > > http://groups.yahoo.com/group/Repeater-Builder/ > > > > To unsubscribe from this group, send an email to: > > [EMAIL PROTECTED] > > > > Your use of Yahoo! Groups is subject to: > > http://docs.yahoo.com/info/terms/ > > > > > > > > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Zetron Model 35
Hi Steve I do appologise that I have not gotten back to you-I can not find it amoungst my files but my ex place of work does have a copy so I will get it from them perhaps tonight or tomorrow. Regards Bradley Glen ZS5WT --- "Steve S. Bosshard (NU5D)" <[EMAIL PROTECTED]> wrote: > Hi Glen, any luck on the Model 35? > > Steve > [EMAIL PROTECTED] > > > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Zetron Model 35
Hi Steve Sure I have the pgm booklet-email me direct and I will try on the weekend to get something to you. [EMAIL PROTECTED] Used that unit and very nice indeed. regards Bradley Glen ZS5WT --- Steve Bosshard <[EMAIL PROTECTED]> wrote: > Anyone have a pdf for a Zetron Model 35 - have unit > need book to set up > and program. > > Thanks, > > Steve > > __ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Battery terminal corrosion
Hi I clean the terminals by using some coke and allow them to settle.Clean away then my brass wire brush fitting on the end of my drill ro really get the terminals clean . I have several fittings so one of them is only used on the cable terminator and pack with a grease as mentioned already. NOTE :Always check for signs of corrosion on the crimp joins where the clamp goes onto the batterry-if discoloured rather cut backa little. Regards Bradley Glen ZS5WT --- Rick - VA3RZS/Charlotte - VA3CMR <[EMAIL PROTECTED]> wrote: > yes Virden is right .. KISS > > I was going to write the same message but it has > been said .. > I use this on ly alarm system batts and in my cars > .. but I don't use > the condom . that would look really funny under the > hood and in the > alarm pannels .. ummm maybe I should put it in the > pannels .. umm > still in there wrappers .. hehe =:) > > All the best > > Rick > > On 6 Jan 2004 at 0:15, Virden Clark Beckman wrote: > > > It will be hard to do and maintain the system in > battery working order > > while you work on it, the easiest way to clean the > terminals is soak > > in baking soda/water solution - you may have to > swirl them around in a > > kids bucket of the mixture to activate the soda > enhancing the cleaning > > into the threads. Once you get things cleaned up > apply vaseline, pure > > petroleum jelly no coagulants or colorants, wipe > some on the underside > > of the terminals and once tightened in place wipe > a little extra over > > the top - now the fun part. To be sure nobody has > been doing off-hour > > experiments place a condom over each one to > further slow the > > oxidation, I am imagining a whole new thread to > this part - but the > > idea is keep-it-simply-simple. Forget the extra > thread on color, scent > > and all that nonsense. > > > > Tim Shephard wrote: > > > > > > A 911 console that I maintain has developed some > corrosion on the > > > battery terminals. > > > > > > What is the best way to clean the terminals and > what do I put on > > > them to keep this from happening again? > > > > > > Thanks > > > > > > -Tim > > > > > > > -- > > 73...Clark Beckman N8PZD > > > > > > > > > > > > Yahoo! Groups Links > > > > To visit your group on the web, go to: > > http://groups.yahoo.com/group/Repeater-Builder/ > > > > To unsubscribe from this group, send an email to: > > [EMAIL PROTECTED] > > > > Your use of Yahoo! Groups is subject to: > > http://docs.yahoo.com/info/terms/ > > > > > > > Rick Szajkowski VA3 RZS > Charlotte Darby VA3 CMR > Node Owners of IRLP Node 2120 > Lakefield Ont Canada > > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Plotting Audio Frequency Response-600 ohm balanced
Hi You have a problem that so many repeaters have that it is frustrating beyond belief. Here is the way I am overcoming this problem after my linked system has been up for many years and driving from one to the other is just not practical. My system is a central hub repeater on uhf 1,6Mhz split and all my uhf repeaters are 7,6Mhz. This makes all audio being passed by one site to the other going into one hub and no serial daisy chaining. All my repeaters at the moment run with either pre=emphasis or de-emphasis at their respective stages. My new repeaters I have used all 600 OHM balanced audio inputs and outputs . The confrerence amp is a modified STC PCM channel card thrown out by telco company .This card when modified becomes a 3-channel input 3 output card which is fine for my single repeater and kink with the third being used for Engineering beeps and bops or audio testing. With the aid of 600 ohm balanced attenuator pads each input to \ from a radio is set up for a level of -10 dBM for 1000 hz at for 60% max dev. The conference amp has a system gain of 10 so all inputs can be increased or decreased by using precision padds on the chassis of the unit. This may seem far too complex for some but after many years of not having a standard in my repeaters I now find it so easy to measure at all possible inputs-outputs and makes life that so much easier. All inputs and output go onto Krone blocks for intertieing the cables. Equipment for measuring the audio is old telco transmission and is protable and extremely accurate , the analog meater is about 12 inches which makes for squeezing the last bit out of precision as one can possibly do. I have seen other ways of doing audio linking and do not say my way is the only way - but it is as close to any system audio routing -trunking audio routing as on can get. My second reason for this is to be able to remotely assist a first line maintenance repeater assistant through level checking. The final is ones plots will only remain constant if the impedances are stable -this is the reason I do not like unbalanced interfaceing . Best of luck I am still in the process of trying to find web space to place all this on the web else I could explain on the pages what I have done. Bradley Glen ZS5WT NATURN UHF repeater owner --- ve7fet <[EMAIL PROTECTED]> wrote: > Ok, I've looked high and low... and come up short. > > I am curious to see just how good/bad the audio > frequency response of > my repeaters are. The problem is that I can't figure > out a good way > to go about doing it. > > I'm looking for information on how and what to use > to check/plot the > audio response through the repeater. I would also > like some info on > plotting the audio response independently of > receivers and > transmitters. A nice swept response plot is > desired... I don't really > want to plot it manually. :) > > The rest of the system is quite happy... so I figure > it is time to > punish myself and start tweaking the audio side to > make them sound > their best. Unfortunately, the audio side is > something I know little > about. > > Your help is appreciated. > > Thanks, > > Lee > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? Find out what made the Top Yahoo! Searches of 2003 http://search.yahoo.com/top2003 Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] TK809 COS location-TK-9s group will help
Hi George There is a user group dedicated to these radios -post the message there and I am sure you will get a response-I have the tech manual but at work -perhaps someone can help today or I will respond from that group. The group covers any model ending in a " 9". They are : tk249 tk349 tk709 tk809. To learn more about the TK-9s group, please visit http://groups.yahoo.com/group/TK-9s To start sending messages to members of this group, simply send email to [EMAIL PROTECTED] Bradley Glen ZS5WT --- george vagner <[EMAIL PROTECTED]> wrote: > anyone know where I can pick off for dtmf decode > squelch > signal on a kenwood tk809, i dont have schematics. > > > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? Find out what made the Top Yahoo! Searches of 2003 http://search.yahoo.com/top2003 Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Audio Hiss
Sounds like you have audio that is not de-emphasised IE taken direc\tly off the discriminator and used fpor data recovery. Solution is simple one resistor and a capacitor. Look at the Micor pages or search anand you should fine the simple installing ideas. I assume you should only place it in the audio chain to the speaker and not interrupt the current audio to the decoder. Regards Bradley Glen ZS5WT --- Don <[EMAIL PROTECTED]> wrote: > Looking for a little CKT Device etc to remove Audio > Hiss from My Weather > receiver , I thought it was a signal problem but > it's not. I Put a 5k pot > in line . > > Thanks Don KA9QJG > > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? Find out what made the Top Yahoo! Searches of 2003 http://search.yahoo.com/top2003 Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] 5 tone-tk-349 to tk809
Hi Art I have the exact same two radios and all works well.I also program the radios with the same program -obviously with the different models. Perhaps if you could mail direct I could send you the files of my radios and you can open them up and have a look how I have programmed them and I am sure you will get the idea. Then one day I can call your node up on IRLP and page your radio. Regrads Bradley Glen ZS5WT [EMAIL PROTECTED] --- [EMAIL PROTECTED] wrote: > The radios I am trying to program with 5 tone are > the Kenwood TK809 and > TK349. Trying to see if they will "talk" 5 tone to > each other. > > Art - KC7GF > Golden, CO > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] 5 tone-info
Hi All Zetron Repeater panels do 5-tone etc and they have some interesting reading material on the subject. Linked to my previous article as an example -I linked my radio up to my coffee perculator and on route I would page the radio with the secondary address , get a response that the unit has switched thew mains on and when I got home a pot of coffee was all ready .The other Hams thought I was mad but define mad -we all like to experiment. regards Bradley Glen ZS5WT __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: 5 tone-tk809T
Hi Thought I would comment on this radio as I use one of these rigs in my van for HAM uhf-I am a bit of a UHF radio junkie. I have the full programming manual for these radios and they are only too clever-Basics is you can do all the basic 5-tone stuff and included are multiple call -answerback divert functions. To truely try everything out on this radio will take you a month of sundays (correctly a lot longer) If you have no prior understanding of the general functionalities it can take a lot longer. I also have the portie which is the TK349 which uses the same program which is really good. Over and above you can write your own program within the intelligence where to tell the radio what it can do and how it must act when codes are received. Foer example you can have a number of events written by you-decode number X wait then reply with x number of X strings OR not ,alert the radio send external alert message divert the radio onto a frequecy or make the radio go into scan . Just an example but as mentioned before your own imagination determines how you want to impliment these many features. As far as these radios they were certainly the better of the five-tone capible radios in their times. If you are stuck you can give me call for specific help and I could scan a page or two beraing in mind the programming manual is several hundred pages with examples of writting non-standard code strings etc. For the beginner you must decide on a code standard. Many emergency services such as Police and Ambulances went with the ZVEI-1 standard.standard of 70ms per tone The large Electrical company went for EIA tones are shorter 33milisecond per tone . We in the Telecom company at the time decided on ZVEI-1. One must remember that a 12345 in one standard will not interact with another atandard of the same number thus deciding on a common code to start is very important. Perhaps hams should decide some where to adopt a standard -I use ZVEI-1 and some EIA for voice pagers that I have played around with.(The ones as used in hospitals etc-make great devices for emergency situations. One important area of concern with single tone signalling remember it is in-band thus take note of any system in-band signalling that takes place such as DC-Remote on Micor-other Voting systems that use specific tones to do the switching DC-landlines or voice recorders , the use of filters will negate some of your tones being used so careful implimentation will do justice Best of luck in your quest-I also have the tone standards for all the different formats. regards Bradley Glen ZS5WT --- mch <[EMAIL PROTECTED]> wrote: > Well, I do know Europe uses a lot of 5-tone > equipment, but the fact that > you had a lot of it was missing from your original > post, so don't be > surprised that your replies were skewed based on > that missing fact. > > I'm not 100% positive, but I THINK you will find > that there are two > 5-tone formats - that used by pagers (older ones) > and that used by the > European radios. They may be different and the > controllers that support > 5-tone only support the US version. That isn't to > say that you could not > use a controller that has a programmable tone > generator to make the > format you need. > > I can't speak for others, but MY reply was based on > an equipment > availability issue, and not a "not invented here" > attitude. As I said, > had you pointed out that you had a lot of european > equipment, my > response would have been different, and included the > info above. But, > I'm not psychic, nor is anyone else on this list > (that I'm aware of). > > Thank you, and a belated Merry Christmas to you an > all, > Joe M. > > [EMAIL PROTECTED] wrote: > > > > Bradly Glen, > > > > Thanks for the only positive response I received > about 5 tone. Seems like > > anything new here meets with a "not invented here" > attitude. > > > > We do not use a lot of 5 tone radios here in the > US, but recently there have > > been a lot of European radios being dumped on the > market. I purchased one (a > > Christmas present from me to me) to see what all > this 5 tone (5TVO) stuff was > > all about. There seems to be little information on > the web. A search brought > > lots of hits but most were ads for radios. A few > hits hinted at the > > possibilities and explained how the tones worked. > Aside from that, I have yet to find an > > in depth explanation of 5 tone. I do understand > that there are several > > different standards (CCIR, EEA, etc) > > > > I have had a TK809T for about a week now and I am > still trying to figure out > > how this function operates in the programming > software. The software help >
Re: [Repeater-Builder] 5 tone
Hi Art First off I have been using 5-tone for many years both commercially and on my amateur radios. The use of 5-tone is well used by our emergency services .There are key advantages to the use of the different sequencial signalling be it dtmf , 5 tone , 6 tone ,(zvei , zvei 1 ,ccir ,eia various standards associated to the actual single tone frequencies allocated to digits and repeat identifiers.) I have always enjoyed the 5-tone for its diversity. Before the formats were availible in commercial radios we would use adhoc boards such as Microtone MT440 etc and these boards are truely and amaizing in their complexity.Most of these boards you could associate multiple addresses such as the idea of paging pyramid layout where a unit is a member of a number of the levels but not all. Other features we used was emergency call.where a radio unit was paged (or hidden button)and the radios id would be transmitted with a cycle-1-infinity where the mic would go live for a pre-defined time the a programmed break and over and over. The radio could be stunned where a coad over the air would allow the radio to be reinstated as a worker. Kill function would cause the radio to have to come into the workshop for obvious misuse or other. Beleive me when we placed 5-tone into service all knew of the signalling and those who still repeatedly kerchunked etc were either ignorant or just plain stupid. Another reason for the signalling is voice recording where each over can be recorded and traced .When a mobile is switched on a "log on "tone is sent .We have also used these features for "out of vehicle "horn feature where if you do not respond to being paged-the hooter goes twice.Call re-divert to paging you on another radio or 5-tone pager-works very well.(Icom v or U200T has this feature. There are just so many different ways to impliment this feature of signalling. There are also 5-tone repeater panels and telephone interconnects availible. Some technical features that I have found of interest-speed of 5-tone far outways the dtmf.5-tone can work in a lower signal to noise enviroment. Off the shelf modules have more to offer than the like DTMF modules. Enjoy it has your mind as the limits to what you want to acheive. Regards Bradley glen ZS5WT --- [EMAIL PROTECTED] wrote: > Anyone out there using or familiar with 5 tone > selective calling? (Selcall) > Would think it would be useful for paging or > callouts for Skywarn & Red Cross. > > Art - KC7GF > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Looking for Good Ideas to Turn on and off a Repeater
Hi You are a little vague on what you want to do. Nhrc make a six port controller which works really well-Have used that DTMF controller with a NHRC controller sharing the chrystal and MT8870 decoder. There are various ways-5 tone (sequencial signalling)-DTMF ctcss dcs 2-tone etc. If you want to go for something really quick and easy-use a ctcss decoder that you can wire the output to break your ptt line-as mentioned you are vague on what you require to acheive . Rergards Bradley Glen --- kg4yti <[EMAIL PROTECTED]> wrote: > Looking for Good Ways to Turn on and off a Repeater > by remote. > This is what I want to do,I want to use the Repeater > COR and or RX > Audio to make a relay make and break the PTT path so > the repeater > will not key. I do not want put a Repeater > Controller on the > Repeater. The I would Appreciate any ideas thanks. > > The Repeater has a built in Controller with > ider,Just need's Remote > on and off. > > > > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Re: [Repeater-Builder] Diamond X-500 for repeater use?]
Hi We use x-200N antennas on my repeaters mainly for transparency-eg: at one site I have three-VHF TX , VHF RX and one for duplexed uhf at 7,6 meg split. My reason is for faulting one can swap and change as one sees fit. The Diamonds have stood up well against the natural elements and we have just ordered more for our new site . Some ideas on mounting of the X-500. 1-As meantioned you must solder the brass joints and use a decent amount of heat-good wire brushing before will give a clean solder. Make sure the orings are well greased for sealing. 2-If the X-500 is side mounted on a mast you should look into a fibreglass offset (such as the other antenna manufacturers stabaliser as these antennas flop around in high winds and will cause extreme stress on the joints.Secondly due to the gain there are deap nulls and you do not want base stations sounding wish-wash into the repeater because the antenna is doing its dance in the wind. 3-The radials should be greased over the dis-similar metal contacts such as the thread of the radial into the base. 4-A pvc paint such as "Court Green " which is my favourite will assist with the sun and weathering. 5- For severe weather you may look into the normal medical bandage and a heavy duty grease-grease wrap -grease wrap.This is well used on navy vessels for weathering and I have found it works very well-until it is time to remove it.(Over prevention is far better than under protection.I want my antennas to last many years and so far so good. Good luck Bradley Glen ZS5WT --- JOHN MACKEY <[EMAIL PROTECTED]> wrote: > "Derek B. McIntyre" wrote: > SNIP > > I have acquired a Diamond X-500 which claims 8.3 > dB on 144-148 MHz > > and 11.5 dB on 440-450 MHz. The antenna is just > over 17 feet tall, > > making the gain claims ridiculous.. My guess is > it's rated in dBi, > > therefore, the claim may be a little closer to > realistic.. 5 dBd on > > 2M and 8 dBd on 440 is my guess.. > SNIP > > I think your guess is probably much closer to the > truth. > > > > I have heard people say that running dual banders > in duplex mode on > > both band can cause broadband noise, intermond, > etc, often causing > > either severe duplex noise or desence on the > repeater unput. I have > > often wondered has anyone had experience with > these types of problems. > > I doubt that is true. I have 2 sites where I run > the Comet GP-15 440/2m/6m > antenna on repeaters for 2 meters & 440 Mhz. 75 > watts out of the 2 meter > duplexer & 45 watts out of the 440 duplexer thru > about 60 feet of 7/8" heliax > has performed well for years. As with any good > installation, use QUALITY > receivers & transmitters, QUALITY jumpers (like > RG-214), and good pass/reject > duplexers. I have been able to make these systems > work WITH ARR GaAsFET > pre-amps!!! (If there was a noise or intermod > problem, the pre-amps wouldn't > be working!!) Be prepared to put a pass can with > sharp skirts on the receive > side output of your duplexer. > > NOTE>> a quality receiver and transmitter basically > dis-qualifies the > following: Icom, Yeasu, Standard, Uniden, Kenwood, > Motorola GM-300, Azden, > Alinco. The following would be considered quality: > GE Mastr Pro, GE Mastr II, > GE Mastr Exec II (NOT the original Exec), GE Mastr > III, Motorola Motrac, > Motorola Micor, Motorola MSR. > > > > I have assembled the array and it feels like a > wet noodle stick, > > > pretty flimsey, but is rated at 90 MPH.. Some > people say the joints > > > work loose inside the antenna. Who can relate > to this? > > I always pull my systems Comet antennas apart & > solder the connections. > Better yet, forget the Comet & Diamond antennas that > have connections in the > antenna. Get the Comet GP-15 from HRO for a little > over $100, it is a one > piece antenna (no connections) and has worked very > well for me. > > Actually, it is best NOT to use Comet or Diamond > antennas. But sometimes the > situation dictates that you must. > > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] + OR -45° or circular polarization
Hi It is good to see someone else following this practice as the results are beneficial for the end user-especially on IHF and even better in the urban built up areas. At any given time the loss in TX and RX is 3dB but the added advantage is that the true system losses is no greater than 3dB where if a single polarisation is used the losses can stretch far into the double figures. An example is take a 4 stack and place two in verticle and the bottom two in horizontal-same type of result. I will be to getting round to doing this on one of my many UHF repeaters. It would be good to let the results be known. Good luck Regards Bradley Glen ZS5WT --- Virden Clark Beckman <[EMAIL PROTECTED]> wrote: > I have seen cross polarized antennas used to receive > links around a > large city airport area, the theory is if the path > is not consistent > there is a larger capture area available. This will > be an interesting > one to follow, I think the coupling loss will become > more like -7 to -9 > db as it is -15 db to fold a vertical signal over to > horizontal. > > f1nfy wrote: > > > > Hello, > > > > I project to use 3 professionnal panels antennas > with +45° and > > -45° > > integrated dipoles for my UHF repeater.I 'll use > this kind of antenna > > for many reasons: > > 1)It's for free(the best reason) > > 2)The coupling loss for any station who work on it > is only 3 db,no > > matter if station is in H or V. > > 3)Gain of each antenna (15dB) is high even if I > lost 3 db because of > > this polarisation. > > > > I don't know if it's more interested to use this > system as is or with > > a complicated system of dephasing 0° on one system > +45° and > > 90° on > > system of -45°.It seem that will be like crossed > dipole yagi well > > known by amateur satellite operator use to build a > circular > > polarization. > > I need to know if there's a guy here who use an > unusual polarization > > on his repeater and if I could take advantages > with it. > > > > 73 > > Laurent F1NFY > > -- > 73...Clark Beckman N8PZD > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] autopatch, rc-96, 7k, MX365-fx315
Hi The chip is a "CML" chip and they are on the web , you may need to fill out a short question or two then download. You may also use an older chip(obselete but used equip will have) being the fx315 which is very easy to impliment and is run by a 1 meg chrystal.binary method of programming-very easy. Good luck( I feel sorry for the OM who takes over my repeaters when the time comes-he will be scratching his head for a VERY VERY long time.) Brad zs5WT --- [EMAIL PROTECTED] wrote: > Hi, > > I have taken over a controller replacement project > for a local repeater group; the guy who had been > working on it is SK. > > The main impetus for the project is this: the > machine has an autopatch which has become unusable > in half the metro area because the telco now > requires 10-digit dialing into the new area code > that was created. What's more, an area code overlay > is coming Any Year Now. > > The incumbent controller is an RC-96; I don't know > the firmware version. Is it true, as I have been > told, that the 96 will not handle multiple area > codes as 10-digit-dialed local calls? (Toll calls > require a leading 1, which I think the '96 can > filter on, so I don't think that they are an issue.) > > > The plan is to replace the RC-96 with a new 7k, > which is already on hand. The machine is open access > and transmits one CTCSS tone during normal > operation, and a different tone during Skywarn nets. > > My predecessor started homebrewing an interface > board to generate CTCSS external to the 7K > controller. I got no documentation on this board. It > appears to have a socket for an MX365/FX365 CTCSS > encoder/decoder chip, but I was not given the chip. > I have not found the MX365 at the usual distributors > (Digi-Key, Allied, Newark, ...). Can anyone point me > to a supplier for this chip? > > An alternative that occurs to me is to substitute a > CS-64 for the MX365. Is there a reason to prefer the > MX365 over the CS-64 solution, or the other way > around? > > Surely we are not the first group to run into a > problem due to area code changes. Any advice or > suggestions re possible workarounds within the > RC-96, or CTCSS generation, would be appreciated. > > Thanks in advance, > Bob N3HAT > > > > > > > > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: crystal alignment (how accurate is accurate)
Hi I think that your gps may well be the ideal as I know that our company's(my gsm calibration equipment) Rubidium Standards are calibrated against the GPS. The method is to take that 1 sec pulse and up count to 10Meg ref and compare that by the same method you are currently using. This is how the labs calibrate our standards-should be the same all over the world. Good luck Brad --- [EMAIL PROTECTED] wrote: > Perhaps I wasn't clear. I have been using this > simple comparison method for > years to align my IFR timebase to WWV. It gets you > within 1 cycle or so at the > 10 MHz. (or closer if you compare the second > harmonic of the 10 MHz timebase > with the 20 MHz WWV signal when it's strong enough.) > What I was asking was, Is > there anyone out there using another method (short > of having your service > monitor locked to the 10 MHz output of a GPS > receiver) that gives you a more > accurate measurement. I am looking for a method that > would give you a visual > indication similar to using a lissajous figure as in > when comparing two audio > frequencies. > > Art - KC7GF > > > > > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: HP 8920 Service Monitor Help
Hi I had an apprentice blow my one up and it also cost -PLENTY. I do know that HP often use a gold fast blow fuse in-line to protect the input .You may want to have a look first.Regards Brad Glen ZS5WT --- Scott Zimmerman <[EMAIL PROTECTED]> wrote: > Thanks guys for all the suggestions. I will have to > do something soon. I > have been dealing with it like it is, but at times > it sure would be nice to > have that antenna port again. BTW: the price > psudo-quoted was $4000. > > Thanks again, and I will let all know what I found. > > Scott > > M. Scott Zimmerman > Zimmerman Electronics > Amateur Radio Call N3XCC > 612 Barnett Road > Boswell, PA 15531 > > > - Original Message - > From: "nj902" <[EMAIL PROTECTED]> > To: > Sent: Monday, November 17, 2003 4:40 PM > Subject: [Repeater-Builder] Re: HP 8920 Service > Monitor Help > > > > --- In Repeater-Builder@yahoogroups.com, "Scott > Zimmerman" > > <[EMAIL PROTECTED]> wrote: > > > > "... the problem is in the input/output section > (A23). A call to HP > > for a replacement module sat me on the floor for a > few hours!! They > > want as much for that module as I paid for the > whole monitor!!!..." > > > _ > > > > For the benefit of us other 8920 owners [to > re-inforce in our minds > > the significance of that little warning message on > the front of the > > machine] just how much was the quote for an > exchange module??? > > > > > > > > > > > > > > > > > > > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > > > > > > > > > > > > > > > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Zetron 38a and GM300
Hi John No special software-just use a terminal emulator program such as Bitcom or Procomm etc or even hyper terminal. The db9 connector has TX , RX ,and a ground so it is very simple to make up. I do have the manual and could help out with some further info-if so please email direct. Thanks Brad Glen ZS5WT --- John Bacon <[EMAIL PROTECTED]> wrote: > Hello, > > I am looking on buying a Zetron 38a and connecting > it to my GM300s > 1. Does anyone have the software to program the > controller via computer. > 2. Looking to wire the GM300s to the 38a > > Any help would be great. > JOHN > > > > > > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
