[Repeater-Builder] Re: Help: GE M2 PL decode dropout on voice peaks and IDA control shelf

[Coy Hilton]

Hi Ralph, I've never seen this before but I have a few questions. Is 
it possible that your highly calibrated Voice has components at this 
PL freq. that could trigger the "reverse cut off feature" or cancil 
out the received tone? Try looking at the input to the tone decoder 
board for the tone while doing the "test". Try a few different CG 
frequencies. . May be it's that youre using "PL" on a GE and 
not "CG"GRIN...(;-)
MERRY CHRISTMAS !!!
AC0Y


--- In Repeater-Builder@yahoogroups.com, "Ralph Hogan" <[EMAIL PROTECTED]> 
wrote:
> Working on an IDA control shelf equipped UHF GE M2 base/repeater. 
Normally
> used to working with a lot of the
> older card rack style control shelves. Never saw this happen on 
other GE M2
> repeaters or mobiles.
> 
> Here's the situation:
> 
> I am using the repeater system looking at RUS for PL detect and 
CAS for COS.
> Either running repeater in stock IDA repeat mode, or externally 
wired RC-85
> controller.
> 
> Using an HT on the bench if I hit the audio hard getting close to 
4.5 KHz
> peaks the repeater would shut down
> in PL mode (127.3 Hz FWIW). If I run in COS only mode, no issues. 
I had
> originally thought perhaps it was something in the IDA control 
shelf, since
> this is my first IDA equipped machine. Probing around saw that U7A 
4066 in
> the IDA was muting the RX audio vol/sql hi to TX audio hi path. 
That control
> line leads to RXMUTE (amoungest other sources) which started me 
looking at
> the PL decoder.
> 
> Used a pl deck extender card to isolate the PL deck's RXMUTE 
decode signal
> from the IDA. Its the decoder for sure, rxmute high (pl detected) 
on low
> level audio and rxmute drops low (no pl decode) on loud voice 
peaks.
> 
> This is a GE stock digital PL decoder. Swapped in another ge pl 
deck. Same
> deal. Swapped in a TS-64MII and it also does it, but not as bad.
> 
> I even went so far as to look at R608 audio preamp pot inside the 
shielded
> box on the audio/sql board. It adjust the VOL/SQL hi signal toward 
the pl
> detector. Its adjusted within limits and didn't make any 
difference.
> 
> I swapped out the GE RX front end and audio/sql boards with known 
good ones
> just for grins thinking distorted audio. Not the problem. 
Rechecked the rx
> chn element freq using the F-11.2 trick on the service monitor. 
It's dead
> zero'd.
> 
> This effect happens on several HT's on hand. Main 'test bench' HT 
measured
> 650 hz pl dev and 4.5 KHz dev voice peaks. Audio source, my highly
> calibrated voice 'Ahh 1 2 3 W4XE' hihi..
> 
> Now I can fully understand a real distorted audio signal or one 
that's way
> over deviated out of the receiver limits not being decodable. But, 
I can't
> ever remember being able to talk off a pl decoder on innumberable 
GE M2's
> I've had on the bench before.
> 
> The only new variable is this IDA shelf and maybe the system 
interface board
> in the drawer. Haven't compared it to a card rack version to see 
if they are
> different. But, not much to go wrong on that system interface 
board in any
> case.
> 
> Thought I'd throw out an email while everyone is sitting at home 
dreaming
> about sugar plums..
> 
> Has anyone else seen this problem?
> 
> 73's and happy holidays
> Ralph W4XE







 
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RE: [Repeater-Builder] Help: GE M2 PL decode dropout on voice peaks and IDA control shelf

[Steve Bosshard \(NU5D\)]

Our Temple Texas ARC owns an Ericsson M3 2M repeater with 3 remote site
voting receivers using GE Phoenix mobiles for 438 Mhz voting receiver link
radios.  We had lots of trouble with cheap ham radios chopping on voice
peaks for several reasons.

Ericsson's philosophy is to use Channel Guard to prevent unwanted signals
from activating the repeater.  They use dsp in the system module to decode
the Channel Guard tone.  Ham talkies and mobiles chopped pretty badly.
Commercial radios did not.

I found first of all that most off the shelf talkies, Icom W32, Yaesu, etc
generally had peak deviation set at +/- 6.5 Khz using voice modulation and
either my HP8921 or COM 120B to measure.  Another generalization, ham
equipment uses tone and digital coded squelch as an after thought.  No voice
band filters the remove voice components below 300 hz. From the modulator
causing the voice modulation low frequency components to compete with
Channel Guard tones.  Add to this a little excessive transmitter deviation
and the system chops.

Ericsson TAC provided a software patch that "AND" ed tone and carrier
squelch so that once tone was detected it could drop and as long as carrier
squelch was open the repeater would remain open.  This patch cured the
problem, except on the Phoenix voting receivers.

I also find that Kenwood, TKR720's and 750's are much more tolerant of
crappy signals.

While on my soap box, The Texas VHF FM Society, coordinator for repeaters in
Texas recommends a maximum instantaneous peak transmitter deviation of +/-
4.0 Khz.  Proper mic input gain and peak deviation limiting goes a long way
toward helping choppy signals.

Mic Gain and Transmitter deviation are loosely related that in setting up a
transmitter, turn the mic gain to max, and set the deviation limiter to say
4.0 Khz.  Then reduce the mic gain to taste.  Helper used to produce an
instrument to measure mic gain, called modulation density - never did catch
on.

Anyhow, my two cents.  Best 73 and Merry Christmas to all,

Steve
NU5D


-Original Message-
From: Jeff Otterson [mailto:[EMAIL PROTECTED] 
Sent: Friday, December 24, 2004 3:22 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Help: GE M2 PL decode dropout on voice peaks
and IDA control shelf


Most likely, your HT is part or all of the problem.

[Steve Bosshard (NU5D)]  







 
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Re: [Repeater-Builder] Help: GE M2 PL decode dropout on voicepeaks and IDA control shelf

[Eric Lemmon]

Ralph,

The symptoms you describe are those of CTCSS distortion due to limiting
of excessive deviation.

If your authorized emission is 20K0F3E, the sum of voice and CTCSS
deviations cannot exceed 5.0 kHz.  The measurements you cited for your
"test bench" HT reveal excessive deviation at 5.15 kHz.  But, that's not
the main issue here.

Ideally, the CTCSS modulation should be in the range of 500 to 700 Hz;
any more does absolutely nothing for improving detection, and it
increases the chances for a buzz to be heard in the received audio.  The
majority of CTCSS decoders will reliably detect the tone with a CTCSS
deviation as low as 200 Hz.

If the CTCSS encoder in each user radio was adjusted to produce no more
than 700 Hz deviation, then the microphone audio limiter can and should
be set to limit voice deviation to 4.3 kHz.  Unfortunately, some radios
are designed so that the CTCSS modulation is mixed with the voice ahead
of the limiter, and this almost guarantees that repeater talk-off will
occur.  Nearly all Amateur portable radios are designed this way, and
there is seldom any means to separately adjust the CTCSS level. 
Compounding this deficiency is the tendency for economy-minded
manufacturers to use far more CTCSS deviation than is necessary, just to
make sure there's enough!

The CTCSS modulation should be mixed with the voice modulation AFTER the
limiter.  If you can adjust your portable and mobile radios for the
deviation levels noted above, your talk-off problems should go away.

73, Eric Lemmon WB6FLY

At 01:24 PM 12/24/2004, you wrote:

Working on an IDA control shelf equipped UHF GE M2 base/repeater.
Normally used to working with a lot of the older card rack style control
shelves.  Never saw this happen on other GE M2 repeaters or mobiles.

Here's the situation:  I am using the repeater system looking at RUS for
PL detect and CAS for OS. Either running repeater in stock IDA repeat
mode, or externally wired RC-85 controller.

Using an HT on the bench, if I hit the audio hard getting close to 4.5
kHz peaks the repeater would shut down in PL mode (127.3 Hz FWIW). If I
run in COS only mode, no issues

This effect happens on several HT's on hand.  Main 'test bench' HT
measured 650 Hz pl dev and 4.5 kHz dev voice peaks. Audio source, my
highly calibrated voice 'Ahh 1 2 3 W4XE' hihi...

Now I can fully understand a real distorted audio signal or one that's
way over deviated out of the receiver limits not being decodable. But, I
can't ever remember being able to talk off a pl decoder on innumerable
GE M2's I've had on the bench before...

Has anyone else seen this problem?

73's and happy holidays
Ralph W4XE




 
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Re: [Repeater-Builder] Help: GE M2 PL decode dropout on voice peaks and IDA control shelf

[Jeff Otterson]

Most likely, your HT is part or all of the problem.

The CTCSS is supposed to be injected after the limiter so this problem 
(called "talk-off") does not happen.  In some radios, the CTCSS is mixed 
with the mike audio prior to the limiter, and then, "talk-off" happens.

Jeff

At 01:24 PM 12/24/2004, you wrote:

>Working on an IDA control shelf equipped UHF GE M2 base/repeater. Normally
>used to working with a lot of the
>older card rack style control shelves. Never saw this happen on other GE M2
>repeaters or mobiles.
>
>Here's the situation:
>
>I am using the repeater system looking at RUS for PL detect and CAS for COS.
>Either running repeater in stock IDA repeat mode, or externally wired RC-85
>controller.
>
>Using an HT on the bench if I hit the audio hard getting close to 4.5 KHz
>peaks the repeater would shut down
>in PL mode (127.3 Hz FWIW). If I run in COS only mode, no issues. I had
>originally thought perhaps it was something in the IDA control shelf, since
>this is my first IDA equipped machine. Probing around saw that U7A 4066 in
>the IDA was muting the RX audio vol/sql hi to TX audio hi path. That control
>line leads to RXMUTE (amoungest other sources) which started me looking at
>the PL decoder.
>
>Used a pl deck extender card to isolate the PL deck's RXMUTE decode signal
>from the IDA. Its the decoder for sure, rxmute high (pl detected) on low
>level audio and rxmute drops low (no pl decode) on loud voice peaks.
>
>This is a GE stock digital PL decoder. Swapped in another ge pl deck. Same
>deal. Swapped in a TS-64MII and it also does it, but not as bad.
>
>I even went so far as to look at R608 audio preamp pot inside the shielded
>box on the audio/sql board. It adjust the VOL/SQL hi signal toward the pl
>detector. Its adjusted within limits and didn't make any difference.
>
>I swapped out the GE RX front end and audio/sql boards with known good ones
>just for grins thinking distorted audio. Not the problem. Rechecked the rx
>chn element freq using the F-11.2 trick on the service monitor. It's dead
>zero'd.
>
>This effect happens on several HT's on hand. Main 'test bench' HT measured
>650 hz pl dev and 4.5 KHz dev voice peaks. Audio source, my highly
>calibrated voice 'Ahh 1 2 3 W4XE' hihi..
>
>Now I can fully understand a real distorted audio signal or one that's way
>over deviated out of the receiver limits not being decodable. But, I can't
>ever remember being able to talk off a pl decoder on innumberable GE M2's
>I've had on the bench before.
>
>The only new variable is this IDA shelf and maybe the system interface board
>in the drawer. Haven't compared it to a card rack version to see if they are
>different. But, not much to go wrong on that system interface board in any
>case.
>
>Thought I'd throw out an email while everyone is sitting at home dreaming
>about sugar plums..
>
>Has anyone else seen this problem?
>
>73's and happy holidays
>Ralph W4XE
>
>
>
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>





 
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[Repeater-Builder] Christmas Present Gmail invitations

[kd4htw2001]

I have 4 Gmail invitations. First four to email me gets them.

Off List please...

Mitch KD4HTW









 
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Re: [Repeater-Builder] Iso Tee Help again

[Mathew Quaife]

The never to find zone, we all have them, unfortunately mine is the entire
1200 foot square basement.  I'm sure I have it, just where is that I put it
so I would never loose it.

Mathew



>
> >--- Kevin Custer <[EMAIL PROTECTED]> wrote:
> > Here is an article that will help with future
> > questions on building the Iso-Tee.
> > The article (somewhat humorous) was derived from the
> > text presented by > MDM Ted.
>
> I had to laugh about the following line:
>
> "total time for assembly for a normal person probly
> 15-20 minutes. took me 2 hours i lost parts in the
> carpet."
>
> I have an old piece of carpet under my workbench in
> the basement to keep my feet warm.  Someday I'm going
> to find all the parts that fell into it and got
> absorbed into a black void (or is it jusy my
> eyesight?).
>
> 73, Joe, K1ike
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>





 
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[Repeater-Builder] Help: GE M2 PL decode dropout on voice peaks and IDA control shelf

[Ralph Hogan]

Working on an IDA control shelf equipped UHF GE M2 base/repeater. Normally
used to working with a lot of the
older card rack style control shelves. Never saw this happen on other GE M2
repeaters or mobiles.

Here's the situation:

I am using the repeater system looking at RUS for PL detect and CAS for COS.
Either running repeater in stock IDA repeat mode, or externally wired RC-85
controller.

Using an HT on the bench if I hit the audio hard getting close to 4.5 KHz
peaks the repeater would shut down
in PL mode (127.3 Hz FWIW). If I run in COS only mode, no issues. I had
originally thought perhaps it was something in the IDA control shelf, since
this is my first IDA equipped machine. Probing around saw that U7A 4066 in
the IDA was muting the RX audio vol/sql hi to TX audio hi path. That control
line leads to RXMUTE (amoungest other sources) which started me looking at
the PL decoder.

Used a pl deck extender card to isolate the PL deck's RXMUTE decode signal
from the IDA. Its the decoder for sure, rxmute high (pl detected) on low
level audio and rxmute drops low (no pl decode) on loud voice peaks.

This is a GE stock digital PL decoder. Swapped in another ge pl deck. Same
deal. Swapped in a TS-64MII and it also does it, but not as bad.

I even went so far as to look at R608 audio preamp pot inside the shielded
box on the audio/sql board. It adjust the VOL/SQL hi signal toward the pl
detector. Its adjusted within limits and didn't make any difference.

I swapped out the GE RX front end and audio/sql boards with known good ones
just for grins thinking distorted audio. Not the problem. Rechecked the rx
chn element freq using the F-11.2 trick on the service monitor. It's dead
zero'd.

This effect happens on several HT's on hand. Main 'test bench' HT measured
650 hz pl dev and 4.5 KHz dev voice peaks. Audio source, my highly
calibrated voice 'Ahh 1 2 3 W4XE' hihi..

Now I can fully understand a real distorted audio signal or one that's way
over deviated out of the receiver limits not being decodable. But, I can't
ever remember being able to talk off a pl decoder on innumberable GE M2's
I've had on the bench before.

The only new variable is this IDA shelf and maybe the system interface board
in the drawer. Haven't compared it to a card rack version to see if they are
different. But, not much to go wrong on that system interface board in any
case.

Thought I'd throw out an email while everyone is sitting at home dreaming
about sugar plums..

Has anyone else seen this problem?

73's and happy holidays
Ralph W4XE








 
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Re: [Repeater-Builder] Iso Tee Help again

[Joe]

>--- Kevin Custer <[EMAIL PROTECTED]> wrote:
> Here is an article that will help with future
> questions on building the Iso-Tee.
> The article (somewhat humorous) was derived from the
> text presented by > MDM Ted.

I had to laugh about the following line:

"total time for assembly for a normal person probly
15-20 minutes. took me 2 hours i lost parts in the
carpet."

I have an old piece of carpet under my workbench in
the basement to keep my feet warm.  Someday I'm going
to find all the parts that fell into it and got
absorbed into a black void (or is it jusy my
eyesight?).

73, Joe, K1ike





 
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[Repeater-Builder] MSR 2000 Need access points for 9600 bps data TX and RX

[highlandfl]

I want to add a 9600 bps digital regenerator to my MSR 2000 
repeaters.  I need a service manual for VHF and a service manual for 
UHF or the access points to connect 9600 fsk transmit signal and 
9600 fsk receive signal output.

Also, need to know points to inhibit PL on Transmit.

Thanks for any help you can give me.

Russ, N4KOX












 
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Re: [Repeater-Builder] GMail Account

[Dave Nixon]

I could put one through a good test!kb9ilq at arrl.net
   Thanks!

>From: "Rick - VA3RZS/Charlotte - VA3CMR" <[EMAIL PROTECTED]>
>To: 
>Sent: Wednesday, December 22, 2004 5:03 PM
>Subject: Re: [Repeater-Builder] GMail Account
> > if there are still some people that would like .. I think I have 10 or 
>so
> > left to give away
> >
> > Rick









 
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Re: [Repeater-Builder] Iso Tee Help again

[Mathew Quaife]

THanks Kevin, greatly appreciated.

Merry Christmas to all on the site.

Mathew


> 
> All,
> 
> Here is an article that will help with future questions on building the 
> Iso-Tee.
> The article (somewhat humorous) was derived from the text presented by 
> MDM Ted.
> Enjoy:
> 
> 
> Merry Christmas,
> Kevin Custer  W3KKC
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 





 
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Re: [Repeater-Builder] Zetron 38A wanted in UK

[Ian Ashford]

Dave,
I have a Philips badged version of the 38A in use on GB3DX to lockout audio
on the main Rx when remote rxs are in use.
The unit seems to decode into the noise more than any mobile/portable set.
I think a spare unit is available- contact me off list.
[EMAIL PROTECTED]

Ian-G8PWE -Walsall
www.gb3dx.com



- Original Message -
From: "dave_g7uzn" <[EMAIL PROTECTED]>
To: 
Sent: Friday, December 24, 2004 12:41 PM
Subject: [Repeater-Builder] Zetron 38A wanted in UK


>
>
> Hi All, I'm after a Zetron 38A contoller for a repeater project in
> the UK..Anyone got one lurking please?
>
>  Cheers Dave G7UZN
>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>





 
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[Repeater-Builder] Zetron 38A wanted in UK

[dave_g7uzn]

Hi All, I'm after a Zetron 38A contoller for a repeater project in 
the UK..Anyone got one lurking please?

 Cheers Dave G7UZN








 
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[Repeater-Builder] CW-ID

[K.Paul Boggs]

Thanks for the many replies and suggestions.
Needed the jolt to my tunnel vision. By adding a few 
dollars to the cost of a unit that IDed only, I choose
the ICS Basic controller. That gives me the CW ID
I wanted and some other useful  features.
THANKS AGAIN
Paul


K.Paul Boggs
[EMAIL PROTECTED]
Mountain Emergency Communications







 
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Re: [Repeater-Builder] Advice on Business Band repeater

[JOHN MACKEY]

NO.

Type acceptance has nothing to do with how someone built the system on
what license the tech had.

BTW - the GROL is not required for a tech to work on part 90 or 95 systems.

-- Original Message --
Received: Thu, 23 Dec 2004 11:05:05 PM CST
From: Benjamin Naber <[EMAIL PROTECTED]>
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Advice on Business Band repeater

> 
> If a guy were to have a GROL license and he built his
> own repeater to meet type acceptance(or close to),
> would it be classified as being so?
> 
> 
> ~Benjamin, KB9LFZ
> 
> 
> --- KI4AWK <[EMAIL PROTECTED]> wrote:
> 
> > I am a ham who is contemplating building a
> > business-band repeater. I have a few questions that
> > maybe you guys can answer and save me hours of
> > reading and searching.
> > 
> > I want to do this so that my family can stay in
> > touch. The business license would be in the name of
> > the family farm. 
> > I know that not everyone in my family is interested
> > in radio enough to become a ham, but would
> > definitely own a radio if they could communicate
> > reliably. Cell phones are horrible.
> > 
> > I do not want to use GMRS frequencies for three
> > reasons: I am not impressed with the policing of the
> > GMRS frequencies. Anyone can get a GMRS radio, and
> > the line between GMRS and FRS and CB seems to be
> > very blurry. I don't want my mom to be the one
> > listening when someone starts being rude on our
> > frequency. Reason two is that I want to be able to
> > hook up a phone patch. This is strictly forbidden in
> > GMRS. Reason three is the "type acceptance" rule
> > that prohibits several quality radios from being
> > used in GMRS.
> > 
> > My questions: 
> > 
> > What kind of cost am I looking at for a repeater
> > pair license?
> > Does each user need a separate license? cost per
> > user?
> > Can I do the research and find a frequency pair
> > myself, or do I have to go through a coordinator?
> > (if so, what does that cost?)
> > (We live in a rural area, Thomasville, GA. Finding a
> > pair should not be hard. I am hoping for a pair in
> > the 460 band, as I have a very nice mastr II for
> > that band.)
> > I have been monitoring a specific frequency, and did
> > research through the FCC website on it for users in
> > my area.
> > What else should I do to get started?
> > 
> > 
> > John Clark - KI4AWK
> 
> 
> =
> -
> ~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!?
> Tired of spam?  Yahoo! Mail has the best spam protection around 
> http://mail.yahoo.com 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 







 
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Re: [Repeater-Builder] Re: Talking Clock

[Steven Passmore]

Or you can install IRLP and then add one of the speaking clock scripts 
available.

Steve P.
- Original Message - 
From: "Coy Hilton" <[EMAIL PROTECTED]>
To: 
Sent: Thursday, December 23, 2004 11:09 AM
Subject: [Repeater-Builder] Re: Talking Clock


>
>
> One way of doing it is Install Echolink, It doesn't have to be
> connected to internet for this, and install Echotime. This way you
> can add a scheduled message or two.
> 73
> AC0Y
>
> --- In Repeater-Builder@yahoogroups.com, "KA9QJG" <[EMAIL PROTECTED]>
> wrote:
>> Can anyone tell Me of  A Software Talking Clock program , I had a
> old radio
>> Shack one that I had modified yrs ago on the repeater and it went
> bad and it
>> is no longer made.
>>
>> Thanks Don
>>
>> Happy Holidays
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
> 





 
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Re: [Repeater-Builder] Did measurement of inductors change???

[Joe Montierth]

--- Neil McKie <[EMAIL PROTECTED]> wrote:

> 
> 
> JOHN MACKEY wrote:
> > 
> 
>   ... snip ... 
> 
> > sort of like when capacitor measurements changed
> from uuF to pF) 
> 
>   35-40 years ago? 
> 
>
> > I was doing this search late last night.  Today, a
> little more 
> > fresh, I'll go back to work & look at the Newark &
> Allied catalogs 
> > again!  Perhaps I'll see something I missed. 
> 
>   If you continue to have problems there, I can look
> for you here. 
> 
>   BTW, I have the current copy of EEM here. 
> 
>   Neil
> 
> 


DigiKey has two different 2.2mH inductors listed.

www.digikey.com

Joe



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[Repeater-Builder] ECHOTIME help

[James]

Does anyone have a copy of the free version of Echotime??? I am very
interested in trying it.  They no longer have it on the site.

James

Coy Hilton wrote:

  
One way of doing it is Install Echolink, It doesn't have to be 
connected to internet for this, and install Echotime. This way you 
can add a scheduled message or two.
73
AC0Y

--- In Repeater-Builder@yahoogroups.com, "KA9QJG" <[EMAIL PROTECTED]> 
wrote:
  
  
Can anyone tell Me of  A Software Talking Clock program , I had a 

  
  old radio 
  
  
Shack one that I had modified yrs ago on the repeater and it went 

  
  bad and it 
  
  
is no longer made.

Thanks Don

Happy Holidays

  
  






 
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Re: [Repeater-Builder] Iso Tee Help again

[Kevin Custer]

All,

Here is an article that will help with future questions on building the 
Iso-Tee.
The article (somewhat humorous) was derived from the text presented by 
MDM Ted.
Enjoy:


Merry Christmas,
Kevin Custer  W3KKC





 
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RE: [Repeater-Builder] Did measurement of inductors change???

[JOHN MACKEY]

OK, a night's rest & a fresh view can do wonders!!

Looking at the Allied catalog, I see that they list ALL chokes in "uH"
(micro-henries). 

As previously stated, I need a 2.2 mH choke.

Looking near the end of thier list, I found a listing for 2.2K!!

I guess I thought it would say "2200 uH" or "2.2 mH" & I wasn't paying close
enough attention to realize how they were using that "K".

I'm embarrased.

thanks to everyone!


-- Original Message --
Received: Thu, 23 Dec 2004 07:32:10 AM CST
From: "Ricardo Trujillo" <[EMAIL PROTECTED]>
To: 
Subject: RE: [Repeater-Builder] Did measurement of inductors change???

> 
> 
> John, 
> Those chokes are a lot smaller than what you need, they are specified in
> microhenrys, the mh you need is millihenrys.
> Ricardo W3/HK4BHA
> 
> -Original Message-
> From: JOHN MACKEY [mailto:[EMAIL PROTECTED] 
> Sent: Wednesday, December 22, 2004 9:40 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Did measurement of inductors change???
> 
> 
> 
> I need to build a filter and it requires I have a few chokes of 2.2 mH
> value. 
> So I look in the Newark & Allied catalogs and all the chokes I am seeing
> are labeled 
> 
> "µH"  (a "u" with a tail on the left)
> 
> rather than 
> 
> "mH"
> 
> Was I asleep for a long period of time & they changed how
> inductors/chokes are labeled or am I missing something else?
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 







 
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Re: [Repeater-Builder] Advice on Business Band repeater

[Benjamin Naber]

If a guy were to have a GROL license and he built his
own repeater to meet type acceptance(or close to),
would it be classified as being so?


~Benjamin, KB9LFZ


--- KI4AWK <[EMAIL PROTECTED]> wrote:

> I am a ham who is contemplating building a
> business-band repeater. I have a few questions that
> maybe you guys can answer and save me hours of
> reading and searching.
> 
> I want to do this so that my family can stay in
> touch. The business license would be in the name of
> the family farm. 
> I know that not everyone in my family is interested
> in radio enough to become a ham, but would
> definitely own a radio if they could communicate
> reliably. Cell phones are horrible.
> 
> I do not want to use GMRS frequencies for three
> reasons: I am not impressed with the policing of the
> GMRS frequencies. Anyone can get a GMRS radio, and
> the line between GMRS and FRS and CB seems to be
> very blurry. I don't want my mom to be the one
> listening when someone starts being rude on our
> frequency. Reason two is that I want to be able to
> hook up a phone patch. This is strictly forbidden in
> GMRS. Reason three is the "type acceptance" rule
> that prohibits several quality radios from being
> used in GMRS.
> 
> My questions: 
> 
> What kind of cost am I looking at for a repeater
> pair license?
> Does each user need a separate license? cost per
> user?
> Can I do the research and find a frequency pair
> myself, or do I have to go through a coordinator?
> (if so, what does that cost?)
> (We live in a rural area, Thomasville, GA. Finding a
> pair should not be hard. I am hoping for a pair in
> the 460 band, as I have a very nice mastr II for
> that band.)
> I have been monitoring a specific frequency, and did
> research through the FCC website on it for users in
> my area.
> What else should I do to get started?
> 
> 
> John Clark - KI4AWK


=
-
~Ben, KB9LFZ  
 
Got your radio on and "listening?" 
Then KEY the radio and say that you are! LET US USE WHAT WE HAVE!!




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Re: [Repeater-Builder] Talking Clock

[Eric Lemmon]

Don,

I have a software-based clock in a Pacific Research repeater controller
that I finally had to disable because it couldn't keep time.  A common
problem with software clocks is that they gain or lose time depending
upon the amount of activity.  In my opinion, that lack of accuracy is
unacceptable.

One solution is to use the hourly 1400 Hz tone burst from WWV to reset a
software clock every hour, so that any accumulated error is corrected
before it becomes significant.  That's one of my back-burner projects
that may yet see the light of day!

73, Eric Lemmon WB6FLY

KA9QJG wrote:
> 
> Can anyone tell Me of  A Software Talking Clock program , I had a old radio
> Shack one that I had modified yrs ago on the repeater and it went bad and it
> is no longer made.
> 
> Thanks Don
> 
> Happy Holidays
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>




 
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Re: [Repeater-Builder] Did measurement of inductors change???

[Wade Lake]

John,

I did a quick search and found those at Digikey, follow this link.
http://www.digikey.com/scripts/DkSearch/dksus.dll?Filter

Wade - KR7K

- Original Message - 
From: "JOHN MACKEY" <[EMAIL PROTECTED]>
To: 
Sent: Thursday, December 23, 2004 10:07 AM
Subject: Re: [Repeater-Builder] Did measurement of inductors change???



Yea, the difference between uH (Micro-henries) & mH (mil-henries) is what
I've
always understood since my earliest training.  But the fact that I have been
unable to fine mH chokes & only found uH chokes made me wonder if the
measurement system of inductors had changed!!  (sort of like when capacitor
measurements changed from uuF to pF)

I was doing this search late last night.  Today, a little more fresh, I'll
go
back to work & look at the Newark & Allied catalogs again!  Perhaps I'll see
something I missed.

-- Original Message --
Received: Wed, 22 Dec 2004 09:35:50 PM CST
From: Joe Montierth <[EMAIL PROTECTED]>
>
> --- JOHN MACKEY <[EMAIL PROTECTED]> wrote:
> > I need to build a filter and it requires I have a
> > few chokes of 2.2 mH value.
> > So I look in the Newark & Allied catalogs and all
> > the chokes I am seeing are
> > labeled "µH"  (a "u" with a tail on the left)
> > rather than "mH"
> >
> > Was I asleep for a long period of time & they
> > changed how inductors/chokes are
> > labeled or am I missing something else?
>
> The m is for milli, the u (with the tail) is for
> micro. They are both valid, RF frequencies usually use
> "microhenries"(u) and audio range will use
> "millihenries" (m). If you order the wrong one you'll
> only be off by a factor of 1000!







Yahoo! Groups Links












 
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Fw: [Repeater-Builder] Did measurement of inductors change???

[Wade Lake]

 Sorry,

  their search engine does not allow that without a previous browser
 session.  Just go to http://www.digikey.com and enter "2.2mH choke" in the
 search window.  Select "fixed(7 items)".
 there are a few to pick from.

 Wade  - KR7K

> - Original Message - 
> From: "Wade Lake" <[EMAIL PROTECTED]>
> To: 
> Sent: Thursday, December 23, 2004 5:38 PM
> Subject: Re: [Repeater-Builder] Did measurement of inductors change???
>
>
> > John,
> >
> > I did a quick search and found those at Digikey, follow this link.
> > http://www.digikey.com/scripts/DkSearch/dksus.dll?Filter
> >
> > Wade - KR7K
> >
> > - Original Message - 
> > From: "JOHN MACKEY" <[EMAIL PROTECTED]>
> > To: 
> > Sent: Thursday, December 23, 2004 10:07 AM
> > Subject: Re: [Repeater-Builder] Did measurement of inductors change???
> >
> >
> >
> > Yea, the difference between uH (Micro-henries) & mH (mil-henries) is
what
> > I've
> > always understood since my earliest training.  But the fact that I have
> been
> > unable to fine mH chokes & only found uH chokes made me wonder if the
> > measurement system of inductors had changed!!  (sort of like when
> capacitor
> > measurements changed from uuF to pF)
> >
> > I was doing this search late last night.  Today, a little more fresh,
I'll
> > go
> > back to work & look at the Newark & Allied catalogs again!  Perhaps I'll
> see
> > something I missed.
> >
> > -- Original Message --
> > Received: Wed, 22 Dec 2004 09:35:50 PM CST
> > From: Joe Montierth <[EMAIL PROTECTED]>
> > >
> > > --- JOHN MACKEY <[EMAIL PROTECTED]> wrote:
> > > > I need to build a filter and it requires I have a
> > > > few chokes of 2.2 mH value.
> > > > So I look in the Newark & Allied catalogs and all
> > > > the chokes I am seeing are
> > > > labeled "µH"  (a "u" with a tail on the left)
> > > > rather than "mH"
> > > >
> > > > Was I asleep for a long period of time & they
> > > > changed how inductors/chokes are
> > > > labeled or am I missing something else?
> > >
> > > The m is for milli, the u (with the tail) is for
> > > micro. They are both valid, RF frequencies usually use
> > > "microhenries"(u) and audio range will use
> > > "millihenries" (m). If you order the wrong one you'll
> > > only be off by a factor of 1000!
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
>





 
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Re: [Repeater-Builder] Re: Talking Clock

[Rick - VA3RZS/Charlotte - VA3CMR]

or IRLP .. for that matter .. 

or build one ..  cant be that hard .. do a search for the info .. 

Best of luck

Rick


On 23 Dec 2004 at 19:09, Coy Hilton wrote:

> 
> 
> One way of doing it is Install Echolink, It doesn't have to be 
> connected to internet for this, and install Echotime. This way you can
> add a scheduled message or two. 73 AC0Y
> 
> --- In Repeater-Builder@yahoogroups.com, "KA9QJG" <[EMAIL PROTECTED]> 
> wrote:
> > Can anyone tell Me of  A Software Talking Clock program , I had a 
> old radio 
> > Shack one that I had modified yrs ago on the repeater and it went 
> bad and it 
> > is no longer made.
> > 
> > Thanks Don
> > 
> > Happy Holidays
> 
> 
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> 

.
-.

Rick Szajkowski VA3 RZS
Charlotte Darby VA3 CMR
Node Owners of IRLP Node 2120
Peterborough Ont Canada






 
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[Repeater-Builder] Re: Iso Tee Help again

[Al Wolfe]

Mathew,
Some one showed me this more than forty years ago. I use a slightly 
different method than has been suggested so far.  Get a UHF tee that the 
male unscrews from. Unscrew this male pin. Slide out the center double 
female connector. Saw off one side of this female section just past the 
threaded hole in the middle. De-burr the piece you have left and reassemble 
the tee. Mark the female side with no center with a black sharpie or red 
paint. If you don't designate the iso end you will eventually forget and 
screw up!

Since it has both male and female connectors you won't need anymore 
adaptors to use it. I often just leave one in line.

Have not tried this yet with an "N" tee, (they're rare and expensive) 
but it might work.

73,
Al, K9SI


>I know I've brought this subject up before, but have lost all the
>emails about it.  I need some help building an RF Coupler Iso-Tee to
>begin learning to adjust duplexers.  Someone gave me some
>instructions on how to build one out of a pl259/so239 t adapter.
>Anyone have this information, or the where abouts of where to find
>such a kritter on the market.  Thanks.
>
>Mathew
 





 
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