[Repeater-Builder] Re: maxar 80 uhf

[ka3hsw]

--- In Repeater-Builder@yahoogroups.com, "[EMAIL PROTECTED]" <[EMAIL 
PROTECTED]> 
wrote:
>
> I needs the mike PIN out for a MAXAR 80 Mobile
> Any Help ???
> Thanks
> Paul
> 
> [EMAIL PROTECTED]


Pin 1 (white) PTT GND (goes to pin W on PC board)
Pin 2 (Black) Mic LO   (V on PCB)
Pin 3 (Red)   Mic HI   (U on PCB)
Pin 4 (Green) PTT  (X on PCB)
Pin 5 (Brown) N/C  (Y on PCB)

Hope this helps!!!


George, KA3HSW / WQGJ413

[Repeater-Builder] Re: maxar 80 uhf

[ka3hsw]

I opened up the Maxar 80 I had at home (VHF) and the connections are 
as I listed them previously (and are virtually identical to tne Moxy 
and plain Maxar):

Red w/ white stripe:  switched A+
Brown w/ yellow strip:  A+
White w/ red strip:  PTT to T/R antenna switching circuit

Coax furthest from antenna connector:  RF in
Coax closest to antenna connector: RF to RX

Only the 55 watt radios have the thermal shutdown connections.



NOTE:  these 25 watt PA's get HOT fast!  They won't survive 
continuous duty at full output.



George, KA3HSW / WQGJ413

Re: [Spam] Re: [Repeater-Builder] UHF Repeater Antennas (combining threads)

[no6b]

At 8/25/2008 20:34, you wrote:
>If you extend the dipoles further from the mast, you will loose the 
>capability to stagger the dipoles around the mast to obtain omni 
>coverage.  Even with the close spaced dipoles there is a slight scaloping 
>of the vertical angle as you go around 360 degrees.  The further out the 
>dipoles are placed, the more variation in the vertical angle you will see.
>
>Back when the FCC required an antenna pattern for licensing a repeater, I 
>put a DB-224 on a mast and ran it through an antenna range, and observed 
>the scaloping.  From that time on I have always prefered to put all the 
>dipoles on the same side of the mast and accept the 3 dB offset in antenna 
>gain.  The plot is perfectly circular, but the center is offset with the 
>aligned dipoles.  Gain is only 3 dB off the back of the mast but is 9 dB 
>in the direction the dipoles are pointing.  And there is no scaloping in 
>the vertical angle at all -

I tried configuring the dipoles of a UHF 4-pole for omni coverage at one 
site & noticed very poor performance.  Modeling the antenna in NEC I 
noticed not only is the pattern scalloped, but the peak gain is lower than 
the nominal 6 dBd as well.

Bob NO6B

[Repeater-Builder] Kenwood TKR720 type 2

[gervais fillion]

hi all
i dont know if you can help me on this one,
i may have one kenwood TKR720 type 2 repeater not too $$,
but it does not go at the ham band ,this one does cover 150-174 mhz.
anyone have ever modify it to go at 136-150 mhz??
so i could use it locally as a good little repeater for my needs
thanks all 
 
gervais ve2ckn
 
_

[Repeater-Builder] UHF Repeater Antennas (combining threads)

[Chuck Kelsey]

This is why on the UHF arrays the dipoles are paired.

Chuck
WB2EDV



- Original Message - >
> I tried configuring the dipoles of a UHF 4-pole for omni coverage at one
> site & noticed very poor performance.  Modeling the antenna in NEC I
> noticed not only is the pattern scalloped, but the peak gain is lower than
> the nominal 6 dBd as well.
>
> Bob NO6B
>
>

RE: [Repeater-Builder] De-Sense and Circulator Question

[n9wys]

OK, I found the message. now the question: what aluminum tape is best for
this?  Or is there a "best" tape?  I just got a Motorola duplexer for a 462
repeater I'm building, and it has the holes/slots in it.  (And yes, it *IS*
a MICOR.)  Of the various types of tape available, does the adhesive need to
be conductive? Or is it "good enough" for the foil to merely cover the
openings?

 

For example, I was browsing Mouser's choices of tape HERE
 ...
http://www.mouser.com/catalog/635/2090.pdf 

I am interested in these tapes: 

3M 425 or 427 (adhesive conductivity not listed)

3M 1170 (listed: "conductive adhesive")

Although I'm thinking at these costs, they must ALL have conductive
adhesives... 425 (1" wide) costs $20.93/roll; 427 is $61.95/roll; and 1170
is $46.07.  If anybody has insights, I'd be interested to hear!

 

Thanks,

Mark - N9WYS 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of Eric Lemmon

 

As I and several others have noted earlier, the Motorola T-1500-series

duplexers are barely adequate even with a 5 MHz split.  Nevertheless,

Motorola shipped thousands of Micor repeater stations with this duplexer,

and they worked fine.  But, keep in mind that a Micor 75-100 watt PA was a

very good design and far more stable and noise-free than most aftermarket

power amplifiers.  The crystal-controlled Micor exciters are inherently less

noisy than the synthesized exciters used in newer and less-expensive

repeaters.  The extremely sharp, crystal-controlled Micor receivers were

better able to shrug off nearby carriers or noise than many- if not most-

modern synthesized receivers.

 

Even if your T-1500-series duplexer is optimally tuned, you can possibly

improve its performance a bit by using adhesive-backed aluminum tape to

cover the slots where the loop and probe adjustments penetrate the side

walls of the cavities.  The metal tape will eliminate a possible leakage

path through the slots.  Your jumper cables should be made of RG-400/U or

RG-214/U cable with the proper connectors on each end- no adapters.

Crimped-on, silver-plated connectors are more reliable than those that are

soldered or clamped.

RE: [Repeater-Builder] De-Sense and Circulator Question

[de W5DK]

I just tuned a set of these T1500s Sunday night, I've seen them before but
never had a need to tune a set till now. Adjusting the notches wasn't fun. I
had seen Eric's note regarding sealing the holes and considered putting some
silver/ aluminum  duct tape used in HVAC over those slots when done but I
didn't.  Mark, you can get plain foil tape at Home Depot/Lowes. 

 

What I did notice was that I was getting some leakage from somewhere during
the notch settings depending on my cable positioning. Normally I would
suspect a bad cable but I have very good test cables and pads reserved for
tuning cavities and haven't seen this recently on other duplexers. I think
Eric is right about some leakage through those slots. How much? Who knows
depending on your specific cable routing and quality. Just don't route over
those slots eh?

 

73

Don Kirchner W5DK

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of n9wys
Sent: Tuesday, August 26, 2008 11:38 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] De-Sense and Circulator Question

 

OK, I found the message. now the question: what aluminum tape is best for
this?  Or is there a "best" tape?  I just got a Motorola duplexer for a 462
repeater I'm building, and it has the holes/slots in it.  (And yes, it *IS*
a MICOR.)  Of the various types of tape available, does the adhesive need to
be conductive? Or is it "good enough" for the foil to merely cover the
openings?

 

For example, I was browsing Mouser's choices of tape HERE
 ...
http://www.mouser.com/catalog/635/2090.pdf 

I am interested in these tapes: 

3M 425 or 427 (adhesive conductivity not listed)

3M 1170 (listed: "conductive adhesive")

Although I'm thinking at these costs, they must ALL have conductive
adhesives... 425 (1" wide) costs $20.93/roll; 427 is $61.95/roll; and 1170
is $46.07.  If anybody has insights, I'd be interested to hear!

 

Thanks,

Mark - N9WYS 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of Eric Lemmon

snip 

Even if your T-1500-series duplexer is optimally tuned, you can possibly

improve its performance a bit by using adhesive-backed aluminum tape to

cover the slots where the loop and probe adjustments penetrate the side

walls of the cavities.  The metal tape will eliminate a possible leakage

path through the slots.  Your jumper cables should be made of RG-400/U or

RG-214/U cable with the proper connectors on each end- no adapters.

Crimped-on, silver-plated connectors are more reliable than those that are

soldered or clamped.

.

 
 
 

[Repeater-Builder] Yahoo hiccup????

[Chuck Kelsey]

Is it just me, or is everyone getting the repeated posting of this, maybe 6-8 
times now???

Chuck
WB2EDV

  - Original Message - 
  From: n9wys 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Saturday, August 23, 2008 7:46 PM
  Subject: RE: [Repeater-Builder] We all Love Super 33+ - Was "Antenna 
connectors sealing instructions"


  OK, let's all open our hymnals to page 85 and sing, "What a friend we have in 
3M".  

   

  ;-)

   

  Mark - N9WYS

Re: [Repeater-Builder] Yahoo hiccup????

[Dave]

no multi posting here

Chuck Kelsey wrote:
> Is it just me, or is everyone getting the repeated posting of this, 
> maybe 6-8 times now???
> Chuck
> WB2EDV
>
> - Original Message -
> *From:* n9wys 
> *To:* Repeater-Builder@yahoogroups.com
> 
> *Sent:* Saturday, August 23, 2008 7:46 PM
> *Subject:* RE: [Repeater-Builder] We all Love Super 33+ - Was
> "Antenna connectors sealing instructions"
>
> OK, let’s all open our hymnals to page 85 and sing, “What a friend
> we have in 3M”…
>
> ;-)
>
> Mark – N9WYS
>
>  





Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:
http://groups.yahoo.com/group/Repeater-Builder/join
(Yahoo! ID required)

<*> To change settings via email:
mailto:[EMAIL PROTECTED] 
mailto:[EMAIL PROTECTED]

<*> To unsubscribe from this group, send an email to:
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<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/

RE: [Repeater-Builder] Yahoo hiccup????

[ka9qjg]

 No  the topic was Not Repeating  but this is the Repeater group Pun
intended , it was just a Very interesting topic that  a lot of People
have Experience with this Brand of Tape and Everyone shared that , Some
good advice was given , and it  Faded away, It was a nice civil
Informative discussion ,  and will be in the  messages area forever for
reference . 
 
Happy Repeater Building 
 
Don KA9QJG 
 

Re: [Repeater-Builder] Yahoo hiccup????

[kd6aaj]

Yahoo sucks. Anytime I email myself, it ends up in the Junk folder. Peother 
people in my addressbook (including myself) either end up in JUNK or SPAM.



--- On Tue, 8/26/08, Dave <[EMAIL PROTECTED]> wrote:

> From: Dave <[EMAIL PROTECTED]>
> Subject: Re: [Repeater-Builder] Yahoo hiccup
> To: Repeater-Builder@yahoogroups.com
> Date: Tuesday, August 26, 2008, 11:57 AM
> no multi posting here
> 
> Chuck Kelsey wrote:
> > Is it just me, or is everyone getting the repeated
> posting of this, 
> > maybe 6-8 times now???
> > Chuck
> > WB2EDV
> >
> > - Original Message -
> > *From:* n9wys 
> > *To:* Repeater-Builder@yahoogroups.com
> > 
> > *Sent:* Saturday, August 23, 2008 7:46 PM
> > *Subject:* RE: [Repeater-Builder] We all Love
> Super 33+ - Was
> > "Antenna connectors sealing
> instructions"
> >
> > OK, let’s all open our hymnals to page 85 and
> sing, “What a friend
> > we have in 3M”…
> >
> > ;-)
> >
> > Mark – N9WYS
> >
> >  
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 

  

Re: [Spam] [Repeater-Builder] Kenwood TKR720 type 2

[NORM KNAPP]

I have one working great on 147.225/147.825.

- Original Message -
From: Repeater-Builder@yahoogroups.com 
To: repeater-builder@yahoogroups.com 
Sent: Tue Aug 26 10:21:13 2008
Subject: [Spam]  [Repeater-Builder] Kenwood TKR720 type 2

hi all
i dont know if you can help me on this one,
i may have one kenwood TKR720 type 2 repeater not too $$,
but it does not go at the ham band ,this one does cover 150-174 mhz.
anyone have ever modify it to go at 136-150 mhz??
so i could use it locally as a good little repeater for my needs
thanks all 
 
gervais ve2ckn
 





 

Re: [Repeater-Builder] Yahoo hiccup????

[Chris Carruba]

Don't like your filtering?.. go into "options" and tweak or turn it off

 Best Regards,


Chris Carruba (WQIK389)
CompuTec Data Systems
Co Administrator irc.spidernet.org



- Original Message 
From: kd6aaj <[EMAIL PROTECTED]>
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, August 26, 2008 3:27:33 PM
Subject: Re: [Repeater-Builder] Yahoo hiccup


Yahoo sucks. Anytime I email myself, it ends up in the Junk folder. Peother 
people in my addressbook (including myself) either end up in JUNK or SPAM.

--- On Tue, 8/26/08, Dave <[EMAIL PROTECTED] com> wrote:

> From: Dave <[EMAIL PROTECTED] com>
> Subject: Re: [Repeater-Builder] Yahoo hiccup
> To: Repeater-Builder@ yahoogroups. com
> Date: Tuesday, August 26, 2008, 11:57 AM
> no multi posting here
> 
> Chuck Kelsey wrote:
> > Is it just me, or is everyone getting the repeated
> posting of this, 
> > maybe 6-8 times now???
> > Chuck
> > WB2EDV
> >
> > - Original Message -
> > *From:* n9wys 
> > *To:* Repeater-Builder@ yahoogroups. com
> > 
> > *Sent:* Saturday, August 23, 2008 7:46 PM
> > *Subject:* RE: [Repeater-Builder] We all Love
> Super 33+ - Was
> > "Antenna connectors sealing
> instructions"
> >
> > OK, let’s all open our hymnals to page 85 and
> sing, “What a friend
> > we have in 3M”…
> >
> > ;-)
> >
> > Mark – N9WYS
> >
> > 
> 
>  - - --
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 




  

[Repeater-Builder] Uniden ARU-251

[Richard Bessey]

All,
I am hopefull someone can tell me what I am doing wrong.

I got a Uniden ARU-251 off of Ebay from a fellow ham, all tuned up and 
ready to roll as a GMRS repeater form me.
All is well, it showed up and had a loose jumper inside, so it was not 
on the correct PL tone. After some diagnostics, I figured that out, and 
got the jumper fixed and it was fully operational. I turned it off and 
went to bed. The next day, I kick it on to play with it, and it won't 
repeat.
I take the cover off and watch the control board, its recieving RX (Per 
the LED, and I can hear it on the front speaker), Its getting the proper 
tone (Per the LED), yet it will not TX.

Is there any Uniden ARU-251 pros on the mailing list that could tell me 
what to check/test to find the source the problem. Its gotta be 
something simple (loose wire, etc...) since one of the jumpers on the 
control board came loose during shipment.

If anyone has any tips I would greatly appreciate any info.

Regards,

Richard Bessey

[Repeater-Builder] Trunking Features w/o Trunking?

[Bill Powell]

I'm putting together a new, ground-up UHF analog simulcast system for
county-wide public safety.  Will have 10 channels at 9 sites tied back
to the dispatch center.

The conventional systems we currently have on VHF work well (voted
input & simulcast transmit w/ console priority) however we have the
usual wacker issues.

MDC is required but post MDC is little help in locking out undesired
users and pre MDC can get officers killed.

I'd like trunking features: MIN/ESN to database for system access,
stun and kill, GEO position and short message to radio display. 
However, I do NOT want or need trunking itself as it is contrary to
our SOP and inherrently EVIL: our politicians will keep adding non
public safety users to the point where the system and dispatchers are
overloaded!

Ideas other than pre MDC or trunked operation?
Even a trunking system that is configured to not trunk and preserve
channel by channel operation?
TIA,
Bill Powell

RE: [Repeater-Builder] Trunking Features w/o Trunking?

[Eric Lemmon]

Bill,

Please explain your comment that ".. pre MDC can get officers killed."  I am
unaware of any evidence whatsoever to support that allegation.  The Santa
Barbara County Sheriff, along with many other California law enforcement
agencies and most U. S. Government agencies, use PTT pre-coding for
identification of individual stations.  If anything, such pre-coding trains
radio users to pause before speaking so that nothing is cut off.  Just so we
are talking about the same thing, I define "pre-coding" as an MDC1200 data
burst that occurs immediately upon PTT button press, before the mike becomes
active.

73, Eric Lemmon WB6FLY
 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Bill Powell
Sent: Tuesday, August 26, 2008 5:51 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Trunking Features w/o Trunking?

I'm putting together a new, ground-up UHF analog simulcast system for
county-wide public safety. Will have 10 channels at 9 sites tied back
to the dispatch center.

The conventional systems we currently have on VHF work well (voted
input & simulcast transmit w/ console priority) however we have the
usual wacker issues.

MDC is required but post MDC is little help in locking out undesired
users and pre MDC can get officers killed.

I'd like trunking features: MIN/ESN to database for system access,
stun and kill, GEO position and short message to radio display. 
However, I do NOT want or need trunking itself as it is contrary to
our SOP and inherrently EVIL: our politicians will keep adding non
public safety users to the point where the system and dispatchers are
overloaded!

Ideas other than pre MDC or trunked operation?
Even a trunking system that is configured to not trunk and preserve
channel by channel operation?
TIA,
Bill Powell



 

Re: [Repeater-Builder] Trunking Features w/o Trunking?

[wd8chl]

Bill Powell wrote:
> I'm putting together a new, ground-up UHF analog simulcast system for
> county-wide public safety.  Will have 10 channels at 9 sites tied back
> to the dispatch center.
> 
> The conventional systems we currently have on VHF work well (voted
> input & simulcast transmit w/ console priority) however we have the
> usual wacker issues.
> 
> MDC is required but post MDC is little help in locking out undesired
> users and pre MDC can get officers killed.
> 
> I'd like trunking features: MIN/ESN to database for system access,
> stun and kill, GEO position and short message to radio display. 
> However, I do NOT want or need trunking itself as it is contrary to
> our SOP and inherrently EVIL: our politicians will keep adding non
> public safety users to the point where the system and dispatchers are
> overloaded!
> 
> Ideas other than pre MDC or trunked operation?
> Even a trunking system that is configured to not trunk and preserve
> channel by channel operation?
> TIA,
> Bill Powell
> 


Why do so many people think trunking is evil If you or anyone else 
has such bad experiences with trunking, it means you have been dealing 
with a system that was VERY poorly installed and maintained.
PERIOD!

(and I've seen a LOT of bad ones!)

RE: [Repeater-Builder] De-Sense and Circulator Question

[Eric Lemmon]

Mark,

I think 3M 1170 tape is the best choice.  It is 2 mils thick, with a 1.2 mil
layer of conductive acrylic adhesive.  I prefer a smooth aluminum tape to an
embossed tape, simply because I think distributed contact with conductive
adhesive is better for RF than point-contact tape with non-conductive
adhesive.  The stuff isn't cheap, of course, but it is a product that you
don't use a lot of, but you need it when you need it.  Kinda like Stabilant
22A.  Here's the product sheet:
http://tinyurl.com/62q8bp
Notice that 3M also offers copper shielding tape, which is nice if you need
to solder to it.  And, for the really wealthy folks, there's also gold tape!
I think I'll just stick (pun intended) with the blue-collar aluminum
stuff...

73, Eric Lemmon WB6FLY
 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of n9wys
Sent: Tuesday, August 26, 2008 9:38 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] De-Sense and Circulator Question

OK, I found the message. now the question: what aluminum tape is best for
this?  Or is there a "best" tape?  I just got a Motorola duplexer for a 462
repeater I'm building, and it has the holes/slots in it.  (And yes, it *IS*
a MICOR.)  Of the various types of tape available, does the adhesive need to
be conductive? Or is it "good enough" for the foil to merely cover the
openings?

 

For example, I was browsing Mouser's choices of tape HERE
 ...
http://www.mouser.com/catalog/635/2090.pdf
  

I am interested in these tapes: 

3M 425 or 427 (adhesive conductivity not listed)

3M 1170 (listed: "conductive adhesive")

Although I'm thinking at these costs, they must ALL have conductive
adhesives... 425 (1" wide) costs $20.93/roll; 427 is $61.95/roll; and 1170
is $46.07.  If anybody has insights, I'd be interested to hear!

 

Thanks,

Mark - N9WYS 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of Eric Lemmon

 

As I and several others have noted earlier, the Motorola T-1500-series

duplexers are barely adequate even with a 5 MHz split.  Nevertheless,

Motorola shipped thousands of Micor repeater stations with this duplexer,

and they worked fine.  But, keep in mind that a Micor 75-100 watt PA was a

very good design and far more stable and noise-free than most aftermarket

power amplifiers.  The crystal-controlled Micor exciters are inherently less

noisy than the synthesized exciters used in newer and less-expensive

repeaters.  The extremely sharp, crystal-controlled Micor receivers were

better able to shrug off nearby carriers or noise than many- if not most-

modern synthesized receivers.

 

Even if your T-1500-series duplexer is optimally tuned, you can possibly

improve its performance a bit by using adhesive-backed aluminum tape to

cover the slots where the loop and probe adjustments penetrate the side

walls of the cavities.  The metal tape will eliminate a possible leakage

path through the slots.  Your jumper cables should be made of RG-400/U or

RG-214/U cable with the proper connectors on each end- no adapters.

Crimped-on, silver-plated connectors are more reliable than those that are

soldered or clamped.

 

Re: [Repeater-Builder] Uniden ARU-251

[Milt]

IIRC there is a front panel pushbutton switch which will interrupt the 
repeat function allowing the unit to act as a full duplex base station 
(non-repeat).  I think it was marked Repeat/Local.

Just a guess at this point.

Mlt
N3LTQ

- Original Message - 
From: "Richard Bessey" <[EMAIL PROTECTED]>
To: 
Sent: Tuesday, August 26, 2008 8:25 PM
Subject: [Repeater-Builder] Uniden ARU-251


> All,
> I am hopefull someone can tell me what I am doing wrong.
>
> I got a Uniden ARU-251 off of Ebay from a fellow ham, all tuned up and
> ready to roll as a GMRS repeater form me.
> All is well, it showed up and had a loose jumper inside, so it was not
> on the correct PL tone. After some diagnostics, I figured that out, and
> got the jumper fixed and it was fully operational. I turned it off and
> went to bed. The next day, I kick it on to play with it, and it won't
> repeat.
> I take the cover off and watch the control board, its recieving RX (Per
> the LED, and I can hear it on the front speaker), Its getting the proper
> tone (Per the LED), yet it will not TX.
>
> Is there any Uniden ARU-251 pros on the mailing list that could tell me
> what to check/test to find the source the problem. Its gotta be
> something simple (loose wire, etc...) since one of the jumpers on the
> control board came loose during shipment.
>
> If anyone has any tips I would greatly appreciate any info.
>
> Regards,
>
> Richard Bessey
>
> 
>
>
>
> Yahoo! Groups Links
>
>
>

Re: [Repeater-Builder] Uniden ARU-251

[wd8chl]

I remember that too, and they have a bad tendency to go flaky. Work the 
switch in and out rapidly and see if it behaves it itself. If you can 
get some tuner cleaner, clean it out good. If that doesn't work, you can 
trace out which contacts make when in 'Repeat' mode, and solder them 
together with jumpers.

Milt wrote:
> IIRC there is a front panel pushbutton switch which will interrupt the 
> repeat function allowing the unit to act as a full duplex base station 
> (non-repeat).  I think it was marked Repeat/Local.
> 
> Just a guess at this point.
> 
> Mlt
> N3LTQ
> 
> - Original Message - 
> From: "Richard Bessey" <[EMAIL PROTECTED]>
> To: 
> Sent: Tuesday, August 26, 2008 8:25 PM
> Subject: [Repeater-Builder] Uniden ARU-251
> 
> 
>> All,
>> I am hopefull someone can tell me what I am doing wrong.
>>
>> I got a Uniden ARU-251 off of Ebay from a fellow ham, all tuned up and
>> ready to roll as a GMRS repeater form me.
>> All is well, it showed up and had a loose jumper inside, so it was not
>> on the correct PL tone. After some diagnostics, I figured that out, and
>> got the jumper fixed and it was fully operational. I turned it off and
>> went to bed. The next day, I kick it on to play with it, and it won't
>> repeat.
>> I take the cover off and watch the control board, its recieving RX (Per
>> the LED, and I can hear it on the front speaker), Its getting the proper
>> tone (Per the LED), yet it will not TX.
>>
>> Is there any Uniden ARU-251 pros on the mailing list that could tell me
>> what to check/test to find the source the problem. Its gotta be
>> something simple (loose wire, etc...) since one of the jumpers on the
>> control board came loose during shipment.
>>
>> If anyone has any tips I would greatly appreciate any info.
>>
>> Regards,
>>
>> Richard Bessey
>>
>> 

RE: [Repeater-Builder] De-Sense and Circulator Question

[no6b]

At 8/26/2008 09:38, you wrote:

>OK, I found the message& now the question: what aluminum tape is best for 
>this?  Or is there a best tape?  I just got a Motorola duplexer for a 462 
>repeater I'm building, and it has the holes/slots in it.  (And yes, it 
>*IS* a MICOR.)  Of the various types of tape available, does the adhesive 
>need to be conductive? Or is it "good enough" for the foil to merely cover 
>the openings?

I wouldn't bother with conductive tape, as the holes in question are too 
small to propagate any RF.  Just cover them with electrical tape if you're 
worried about dust or moisture infiltration.

Bob NO6B

[Repeater-Builder] Re: Trunking Features w/o Trunking?

[Bill Powell]

Thanks for the reply Eric,

First, it's that dam, loud BEEP when the PTT is pressed and Pre is
programmed.
Second is the potential loss of the first word turning "Don't Shoot"
into . . . 

I'd gladly consider MDC if it were twice as fast, the radio buffered
the (analog) audio, it did more than 4 digits and was based on a
(more) open standard.

Bp


--- In Repeater-Builder@yahoogroups.com, "Eric Lemmon" <[EMAIL PROTECTED]> 
wrote:
>
> Bill,
> 
> Please explain your comment that ".. pre MDC can get officers
killed."  I am
> unaware of any evidence whatsoever to support that allegation.  The
Santa
> Barbara County Sheriff, along with many other California law enforcement
> agencies and most U. S. Government agencies, use PTT pre-coding for
> identification of individual stations.  If anything, such pre-coding
trains
> radio users to pause before speaking so that nothing is cut off. 
Just so we
> are talking about the same thing, I define "pre-coding" as an
MDC1200 data
> burst that occurs immediately upon PTT button press, before the mike
becomes
> active.
> 
> 73, Eric Lemmon WB6FLY
>  
> 
> -Original Message-
> From: Repeater-Builder@yahoogroups.com
> [mailto:[EMAIL PROTECTED] On Behalf Of Bill Powell
> Sent: Tuesday, August 26, 2008 5:51 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Trunking Features w/o Trunking?
> 
> I'm putting together a new, ground-up UHF analog simulcast system for
> county-wide public safety. Will have 10 channels at 9 sites tied back
> to the dispatch center.
> 
> The conventional systems we currently have on VHF work well (voted
> input & simulcast transmit w/ console priority) however we have the
> usual wacker issues.
> 
> MDC is required but post MDC is little help in locking out undesired
> users and pre MDC can get officers killed.
> 
> I'd like trunking features: MIN/ESN to database for system access,
> stun and kill, GEO position and short message to radio display. 
> However, I do NOT want or need trunking itself as it is contrary to
> our SOP and inherrently EVIL: our politicians will keep adding non
> public safety users to the point where the system and dispatchers are
> overloaded!
> 
> Ideas other than pre MDC or trunked operation?
> Even a trunking system that is configured to not trunk and preserve
> channel by channel operation?
> TIA,
> Bill Powell
>

RE: [Repeater-Builder] Need some help- M-10 related

[Peter Dakota Summerhawk]

Talked with my contact they are going to see if we can get a 151/159 split
to better suit our needs. Will keep you posted on this.

Thanks

Peter Summerhawk

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Morris WA6ILQ
Sent: Monday, August 25, 2008 10:11 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Need some help- M-10 related

 

At 08:45 AM 08/25/08, you wrote:

OK, got the M-10's in the mail yesterday and will have to get them over to
the shop to program them. What I got for a freq spread is:
151.835 and 153.020 so I can t use a duplexer and will have to run a dual
antenna system. How far apart do I have to mount these to make sure they
work ok? I have a Motorola RICK to use and want to have the units programmed
for around 15 watts or so that way I don't burn out the radios when we
really need it. I am thinking that the 153.020 is going to be repeater input
and the 151.835 is the output. I will be running DCS on the system to avoid
problems with the system. The radios (CP200) are going to be programmed with
MDC1200 signaling as the supervisors carry a HT1250 so they can see who keys
up and if there are any problems.
I need some help on getting the antennas set up and I can program the rigs
for  the repeater use so no problem there.
 
Thanks
 
Peter Summerhawk-N0WRE


That split (under 1.2 MHz)  is a little close for a baby notch-only
duplexer.  
Can you get a different input frequency further out?

If you can get a 4 mhz or so you will find it is much easier and much 
cheaper to make it work.   

A while back the Canadians surplused out a BIG bunch of high 
band MSR2000s with 4-5mhz duplexers in them (inside the MSR 
cabinet), and all of them that went into amateur service had them 
ripped out and shelved.  

If you can bump the receive channel further out then one of those 
ex-Canadian would scratch your itch just fine, and the seller would 
get some shelf space back, so it should be pretty cheap as well.

I wouldn't mind finding one of those myself - I have a use for one. 
The repeater transmit channel would be in the 151-152 area and 
the receive channel would be in the 156-158 area.

Mike WA6ILQ

 

[Repeater-Builder] Re: Trunking Features w/o Trunking?

[Bill Powell]

Thanks for the reply Jim,

I'm speaking of a mixed user public safety system w/ fire, EMS, 3 PD
zones and emergency management.

In our system all of the users of a given channel have to be able to
hear and interact with ALL other users on that channel AND the
dispatcher - not what trunking was really designed for: "dumbing down"
radio ops.

Our public safety users are smart enough to know which TAC channel to
use and the circumstances that require it's usse or they wouldn't be
using a radio.  Trunking brings nothing to that table.

The dispatcher MUST have control at all times - in the "loop" between
what the reperaters hear and what goes out on the air - not connected
as a "user" and competing for air-time.

Aside from those issues, we have politicians that will not say no when
it doesn't cost them any money.  Our dispatchers are up to the task at
the moment but couldn't / wouldn't handle garbage trucks, health
department and all the other non public safety users that would get
added to the system without a thought: politicians are inherently
incapable of rational thought!

So - a trunked system would get loaded up with everyone and anyone who
bought a radio and dispatchers and system be damned!

However, some of the features found in trunked systems would be very
nice to have...
Bp




--- In Repeater-Builder@yahoogroups.com, wd8chl <[EMAIL PROTECTED]> wrote:
>
> Bill Powell wrote:
> > I'm putting together a new, ground-up UHF analog simulcast system for
> > county-wide public safety.  Will have 10 channels at 9 sites tied back
> > to the dispatch center.
> > 
> > The conventional systems we currently have on VHF work well (voted
> > input & simulcast transmit w/ console priority) however we have the
> > usual wacker issues.
> > 
> > MDC is required but post MDC is little help in locking out undesired
> > users and pre MDC can get officers killed.
> > 
> > I'd like trunking features: MIN/ESN to database for system access,
> > stun and kill, GEO position and short message to radio display. 
> > However, I do NOT want or need trunking itself as it is contrary to
> > our SOP and inherrently EVIL: our politicians will keep adding non
> > public safety users to the point where the system and dispatchers are
> > overloaded!
> > 
> > Ideas other than pre MDC or trunked operation?
> > Even a trunking system that is configured to not trunk and preserve
> > channel by channel operation?
> > TIA,
> > Bill Powell
> > 
> 
> 
> Why do so many people think trunking is evil If you or anyone else 
> has such bad experiences with trunking, it means you have been dealing 
> with a system that was VERY poorly installed and maintained.
> PERIOD!
> 
> (and I've seen a LOT of bad ones!)
>

[Repeater-Builder] Anyone Playing w/ CDM-1550s?

[Bill Powell]

Has anyone found a way to move the window on a CDM-1550?
I'd really like to have a 430-480 window in one radio rather than
individual 408-470 and 450-512 radios.
I remember that it might be able to be done in the HTs w/ programming
battery but I don't think that applies to the mobile.

Thanks,
Bill Powell

Re: [Repeater-Builder] Re: Trunking Features w/o Trunking?

[no6b]

At 8/26/2008 21:14, you wrote:
>Thanks for the reply Eric,
>
>First, it's that dam, loud BEEP when the PTT is pressed and Pre is
>programmed.

So THAT'S what I hear coming from the FD/PD radios inside the Comm. tent at 
the marathon.  Yeah it's annoying alright, & I can't even hear what's 
coming out of the radios from where I sit.  But I sure hear that tone at 
the beginning of each transmission.

If they'd just use 1/2 second or so of audio delay on the TX audio, they 
could stick the data burst in front of the audio without losing anything.

Bob NO6B