RE: [Repeater-Builder] coax length

[Mike Besemer (WM4B)]

Collin,

 

I found a nice commercial-quality load (the type that looks like a big
heat-sink) on the e-place quite cheap.  I'm really happy with it.  The guy
who was selling it had a bunch of them, so you might give it a shot.

 

Also, check with Dan. he may have something he can at least loan you.

 

Mike

WM4B

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Wednesday, September 24, 2008 12:14 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] coax length

 

John,
Very well then, I guess I need to be shopping for a good load. Any 
suggestions? Any under an arm and a leg? What do the good loads use for 
a resistor? I was under the impression that a non inductive resistor 
was the purest resistance you could get. I have been wrong many times 
in the past.
Thanks, Collin

-Original Message-
From: John J. Riddell <[EMAIL PROTECTED] 
>
To: Repeater-Builder@yahoogroups.com
 
Sent: Tue, 23 Sep 2008 9:08 pm
Subject: Re: [Repeater-Builder] coax length

Colin, Non inductive resistors are quite inductive above 30 Mhz.
The Cantenna is also a poor load at VHF / UHF.

John VE3AMZ

- Original Message -
From: <[EMAIL PROTECTED]  >
To: mailto:Repeater-Builder%40yahoogroups.com> >
Sent: Tuesday, September 23, 2008 8:25 PM
Subject: Re: [Repeater-Builder] coax length

>I am not sure what would make a good or not good load resistor. I am
> using a pair of non inductive 100 ohm 100 watt resistors in parallel,
> air cooled. I also use a cantenna. Are these not good or fair?
> Thanks, Collin
>
>
> -Original Message-
> From: wd8chl <[EMAIL PROTECTED]  >
> To: Repeater-Builder@yahoogroups.com
 
> Sent: Wed, 24 Sep 2008 8:26 am
> Subject: Re: [Repeater-Builder] coax length
>
>
>
>
>
>
> [EMAIL PROTECTED]   wrote:
>> Dear RP,
>> I am doing some testing and have the 145.410 repeater connected to a
>> dummy load. To get an accurate output indication in watts is it
>> critical to have 1/2 wavelength cables? I have used an 18" cable from
>> TX to wattmeter and then a 72" cable from wattmeter to load 
resistor.
> I
>> have noticed a big difference in wattmeter indication between using
> the
>> 72" cable and connecting the load right to the wattmeter. Also the
> same
>> indication with a cable 144" long. I am making some cables 1/2
>> wavelength long for tuning use. Am I doing right?
>> Thanks, Collin
>>
>
> If you have a good dummy load, it WILL NOT matter what length coax you
> use. In fact, I try to make sure my cables are NOT resonant. If 
there's
> a significant difference when you go from a resonant cable to a
> non-resonant one, or from a 1/4-wave to a 1/2-wave, there is a problem
> with the load.
>
>
>
>
>
> 
>
>
>
> Yahoo! Groups Links
>
>
>
>

 

<><>

[Repeater-Builder] ROIP interfaces

[Gareth Bennett (Ihug)]

Hello Group, 

I am looking for options for ROIP interfaces that can be interfaced to base 
stations. I am aware of the major brands such as Omnitronics, Telex/Vega, CSI 
and Raytheon/JPS. 
Are there any other vendors out there that do a decent stand alone ROIP 
interface unit at a reasonable price?

We are OEM suppliers and are looking for possibly two tiers of unit, one that 
can provide regenerated CTCSS (High end tier) and a more basic unit for 
possible trigger base applications that we can integrate into our own systems.

Does anybody have any suggestions or recommendations?

Wishing you all the very best

Gareth Bennett

RE: [Repeater-Builder] coax length

[n9wys]

Collin,

A guy local to me (WD9HSY) sells them - rated at 200W - on a certain auction
site.  Normal cost is about $59.00.  If you do a search for "dummy load" it
will pop up for you.  Although not costing an "arm and a leg" these might
qualify for a finger or two...  ;-)

They are very nice loads...

NOTE: I have no pecuniary interest in his business - just answering an
inquiry regarding a source for dummy loads.

73,
Mark - N9WYS

-Original Message-
From: Repeater-Builder@yahoogroups.com  On Behalf Of [EMAIL PROTECTED]

John,
Very well then, I guess I need to be shopping for a good load. Any 
suggestions? Any under an arm and a leg? What do the good loads use for 
a resistor? I was under the impression that a non inductive resistor 
was the purest resistance you could get. I have been wrong many times 
in the past.
Thanks, Collin

[Repeater-Builder] MSR2000 manuals

[George Henry]

Since the MSR2000 RF manuals are NLA from Mother Moto, does anyone have them 
already scanned, or is anyone willing to loan a set to be scanned & uploaded to 
RB?

6881061E50 VHF RF, power supply, & accessories
6881061E55 UHF RF

George, KA3HSW / WQGJ413

[Repeater-Builder] Archive Messages

[Randy]

I see where Eric wb6fly has made referance of what repeaters are 
capable of transmitting just by the model numbers.
Would anyone else have any information on this same issue?
"What a Motorola Repeater is capable of just by the Model #???

[Repeater-Builder] Re: MSR2000 manuals

[Randy]

---http://mods.dk/ 
.
 In Repeater-
[EMAIL PROTECTED], George Henry <[EMAIL PROTECTED]> wrote:
>
> Since the MSR2000 RF manuals are NLA from Mother Moto, does anyone 
have them already scanned, or is anyone willing to loan a set to be 
scanned & uploaded to RB?
> 
> 6881061E50 VHF RF, power supply, & accessories
> 6881061E55 UHF RF
> 
> George, KA3HSW / WQGJ413
>

[Repeater-Builder] Wanted: 2-port controller

[kk2ed]

I have a need for a cheap 2-port controller for a commercial repeater 
project. One repeater and one link port.  

Before I go order a new CAT 200, does anyone on the list have something 
similar that they're looking to get rid of?


Thanks
Eric
KE2D

[Repeater-Builder] Direct FM Modulation??

[k0jxi]

Can anyone tell me if the GE Delta, Phoenix, MLS or MVS use direct FM 
modulation or phase modulation.  Could mot find an exact reference to 
the subject in the manuals.  Since the units are synthised I suspect 
they are Phase modulation??   I have a master 2 with the PLL channel 
element that I think is direct fm

reply to [EMAIL PROTECTED]

Thanks, Dale

[Repeater-Builder] Re: Wanted: 2-port controller

[k6jsi]

--- In Repeater-Builder@yahoogroups.com, "kk2ed" <[EMAIL PROTECTED]> wrote:
>
> I have a need for a cheap 2-port controller for a commercial 
repeater project. One repeater and one link port.  
>  
> Eric
> KE2D

Try the Linker-IIa by ICS.  Very robust 2-port controller for the 
money, $139.95.  I've got 15 of them in service, and they wrok great.  
Good audio through-put.

Shorty, K6JSI

[Repeater-Builder] Re: Wanted: 2-port controller

[Joe Burkleo]

Sorry I do not have anything used. Not sure what a new CAT200 will set
you back these days, but if you are looking for a inexpensive 2 port
controller, I would look at one of Brian's Linker IIA ICS controllers
for under $140.

Joe

--- In Repeater-Builder@yahoogroups.com, "kk2ed" <[EMAIL PROTECTED]> wrote:
>
> I have a need for a cheap 2-port controller for a commercial repeater 
> project. One repeater and one link port.  
> 
> Before I go order a new CAT 200, does anyone on the list have something 
> similar that they're looking to get rid of?
> 
> 
> Thanks
> Eric
> KE2D
>

Re: [Repeater-Builder] coax length

[Ralph Mowery]

--- On Wed, 9/24/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:

> From: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> Subject: Re: [Repeater-Builder] coax length
> To: Repeater-Builder@yahoogroups.com
> Date: Wednesday, September 24, 2008, 12:14 AM
> John,
> Very well then, I guess I need to be shopping for a good
> load. Any 
> suggestions? Any under an arm and a leg? What do the good
> loads use for 
> a resistor? I was under the impression that a non inductive
> resistor 
> was the purest resistance you could get. I have been wrong
> many times 
> in the past.
> Thanks, Collin
> 
> 

Most of the non inductive resistors are only that way around audio frequencies. 
 At RF they turn very reactive.  You need a dummy load that is RF rated.  If 
you don't run too much power for the coax to handle it, 100 feet of rg58 and 
the cantenna would make a good dummy load for 140 MHz and up.  The losser the 
coax is (but good coax) the better the dummy load it will be.  If you have 
around 400 to 500 feet of rg58 you can just short the end and have a better 
match than most commercial dummy loads at 140 MHz and up.

Some of the good dummy loads are made similar to the Heath-kit but the 
'shielding tube' is formed to be a better match to 50 ohms.  Sometimes it is 
not a straight pipe,but it is curved so it will match 50 ohms over a broad 
range of frequencies.



  

Re: [Repeater-Builder] Re: Wanted: 2-port controller

[Jim Brown]

The NHRC-4 two port controller does a nice job.  I have 3 that I built from 
kits and have less than $70 a piece in them.  The software upgrade they are 
delivering now is very straightforward to use and works very well.

73 - Jim  W5ZIT

--- On Wed, 9/24/08, Joe Burkleo <[EMAIL PROTECTED]> wrote:
From: Joe Burkleo <[EMAIL PROTECTED]>
Subject: [Repeater-Builder] Re: Wanted: 2-port controller
To: Repeater-Builder@yahoogroups.com
Date: Wednesday, September 24, 2008, 6:17 PM











Sorry I do not have anything used. Not sure what a new CAT200 will 
set

you back these days, but if you are looking for a inexpensive 2 port

controller, I would look at one of Brian's Linker IIA ICS controllers

for under $140.



Joe



--- In Repeater-Builder@ yahoogroups. com, "kk2ed" <[EMAIL PROTECTED]> wrote:

>

> I have a need for a cheap 2-port controller for a commercial repeater 

> project. One repeater and one link port.  

> 

> Before I go order a new CAT 200, does anyone on the list have something 

> similar that they're looking to get rid of?

> 

> 

> Thanks

> Eric

> KE2D

>




  




 

















  

[Repeater-Builder] Re: Motorola MICOR Receiver enclosure questions

[Joe Burkleo]

Larry,
I do not have the manual that specifically covers the optional link
receiver chassis, which is what we both have.

I was using the pinout off the the opposite end of the cable where it
connects into the station. There is no reference that I have found any
reference to a COS input signal. It appears that the system is
expecting idle tone to be present, much like the spectra-trac voting
system. We may need to find the manual for the link receiver option,
to find out everything the other gentleman was saying about the
differences in the audio/squelch boards between bands.

I think between us with our previous Micor experience, we can find the
appropriate COS and PL detect signals on the A/S board. We may have to
do a little digging and use something like a CD-4001 or CD-4011 cmos
gate to buffer the signals to prevent loading, but that is not a huge
problem or showstopper. Lots of room inside that chassis to work with.
I am also inclined to use something like a DB-9 or a round hole mount
Cinch style multi-pin connector instead of the ribbon cable. I know
Motorola used the ribbon cables for a lot of their cabling in the
newer stations, but I still prefer using shielded cable for
interconnections.

Joe

[Repeater-Builder] Re: Wanted: 2-port controller

[Joe Burkleo]

Jim,
I have not looked at the NHRC-4 lately. I have used them in the past
and they are a good controller also. Can you now command the
controller via DTMF from the link port? I know in the past you could
only command the controller with DTMF from the main repeater port.
This is why I started using the Linker IIa when I needed a 2 port
controller.

Thanks,
Joe

--- In Repeater-Builder@yahoogroups.com, Jim Brown <[EMAIL PROTECTED]> wrote:
>
> The NHRC-4 two port controller does a nice job.  I have 3 that I
built from kits and have less than $70 a piece in them.  The software
upgrade they are delivering now is very straightforward to use and
works very well.
> 
> 73 - Jim  W5ZIT
> 
> --- On Wed, 9/24/08, Joe Burkleo <[EMAIL PROTECTED]> wrote:
> From: Joe Burkleo <[EMAIL PROTECTED]>
> Subject: [Repeater-Builder] Re: Wanted: 2-port controller
> To: Repeater-Builder@yahoogroups.com
> Date: Wednesday, September 24, 2008, 6:17 PM
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Sorry I do not have anything used. Not sure what a new
CAT200 will set
> 
> you back these days, but if you are looking for a inexpensive 2 port
> 
> controller, I would look at one of Brian's Linker IIA ICS controllers
> 
> for under $140.
> 
> 
> 
> Joe
> 
> 
> 
> --- In Repeater-Builder@ yahoogroups. com, "kk2ed"  wrote:
> 
> >
> 
> > I have a need for a cheap 2-port controller for a commercial repeater 
> 
> > project. One repeater and one link port.  
> 
> > 
> 
> > Before I go order a new CAT 200, does anyone on the list have
something 
> 
> > similar that they're looking to get rid of?
> 
> > 
> 
> > 
> 
> > Thanks
> 
> > Eric
> 
> > KE2D
> 
> >
>

RE: [Repeater-Builder] Wanted: 2-port controller

[Mike Mullarkey]

Hi Eric,

 

Call Bob from SComm, He has a new controller that the layout is some of the
best I have seen. I would use it on any of my commercial gear any day.

 

 

 

Colorado Telecom, L.L.C

Mike Mullarkey K7PFJ

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of kk2ed
Sent: Wednesday, September 24, 2008 4:39 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Wanted: 2-port controller

 

I have a need for a cheap 2-port controller for a commercial repeater 
project. One repeater and one link port. 

Before I go order a new CAT 200, does anyone on the list have something 
similar that they're looking to get rid of?

Thanks
Eric
KE2D

 

[Repeater-Builder] Re: Wanted: 2-port controller

[kk2ed]

I actually have four of the SCOM 7330s in service right now. Probably 
the best hardware design available of all the controllers. However, 
it is overkill for this simple project. I just need something simple 
enough for a repeater and link, providing cos/ptt switching and audio 
gating/mixing.  It will be mounted inside a GR300 housing in place of 
the Motorola controller. No need for IDs or tones. 

The Linker IIa or CAT400 looks to be the best bet.  Before I pulled 
the trigger on placing an order, I figured  I would see if anyone had 
a used one for sale.  Otherwise I will place an order in the next day 
or so.

Eric
KE2D


--- In Repeater-Builder@yahoogroups.com, "Mike Mullarkey" <[EMAIL PROTECTED]> 
wrote:
>
> Hi Eric,
> 
>  
> 
> Call Bob from SComm, He has a new controller that the layout is 
some of the
> best I have seen. I would use it on any of my commercial gear any 
day.
> 
>  
> 
>  
> 
>  
> 
> Colorado Telecom, L.L.C
> 
> Mike Mullarkey K7PFJ
> 
>   _  
> 
> From: Repeater-Builder@yahoogroups.com
> [mailto:[EMAIL PROTECTED] On Behalf Of kk2ed
> Sent: Wednesday, September 24, 2008 4:39 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Wanted: 2-port controller
> 
>  
> 
> I have a need for a cheap 2-port controller for a commercial 
repeater 
> project. One repeater and one link port. 
> 
> Before I go order a new CAT 200, does anyone on the list have 
something 
> similar that they're looking to get rid of?
> 
> Thanks
> Eric
> KE2D
>

[Repeater-Builder] Re: Wanted: 2-port controller

[skipp025]

You might want to look at the CAT Auto RLS-1000 aka RBS-1000 
unit. 

s. 

>  "kk2ed" <[EMAIL PROTECTED]> wrote:
>
> I actually have four of the SCOM 7330s in service right now. Probably 
> the best hardware design available of all the controllers. However, 
> it is overkill for this simple project. I just need something simple 
> enough for a repeater and link, providing cos/ptt switching and audio 
> gating/mixing.  It will be mounted inside a GR300 housing in place of 
> the Motorola controller. No need for IDs or tones. 
> 
> The Linker IIa or CAT400 looks to be the best bet.  Before I pulled 
> the trigger on placing an order, I figured  I would see if anyone had 
> a used one for sale.  Otherwise I will place an order in the next day 
> or so.
> 
> Eric
> KE2D
> 
> 
> --- In Repeater-Builder@yahoogroups.com, "Mike Mullarkey"  
> wrote:
> >
> > Hi Eric,
> > 
> >  
> > 
> > Call Bob from SComm, He has a new controller that the layout is 
> some of the
> > best I have seen. I would use it on any of my commercial gear any 
> day.
> > 
> >  
> > 
> >  
> > 
> >  
> > 
> > Colorado Telecom, L.L.C
> > 
> > Mike Mullarkey K7PFJ
> > 
> >   _  
> > 
> > From: Repeater-Builder@yahoogroups.com
> > [mailto:[EMAIL PROTECTED] On Behalf Of kk2ed
> > Sent: Wednesday, September 24, 2008 4:39 PM
> > To: Repeater-Builder@yahoogroups.com
> > Subject: [Repeater-Builder] Wanted: 2-port controller
> > 
> >  
> > 
> > I have a need for a cheap 2-port controller for a commercial 
> repeater 
> > project. One repeater and one link port. 
> > 
> > Before I go order a new CAT 200, does anyone on the list have 
> something 
> > similar that they're looking to get rid of?
> > 
> > Thanks
> > Eric
> > KE2D
> >
>

RE: [Repeater-Builder] Archive Messages

[Eric Lemmon]

Randy,

I am flattered by your comment, but you give me more credit than I am due.
The model numbers usually indicate the band and power level, but not the
frequency split within a band.  For example, a typical Micor repeater
station might have a model number of C73RCB-3106BT.  I know from that model
number is that it is a 100 watt, continuous-duty VHF repeater station, but
I cannot tell which split (132-142, 142-150.8, 150.8-162, or 162-174 MHz) it
is built for until I look at the modules installed in the station.

73, Eric Lemmon WB6FLY
 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Randy
Sent: Wednesday, September 24, 2008 2:54 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Archive Messages

I see where Eric wb6fly has made reference of what repeaters are 
capable of transmitting, just by the model numbers.
Would anyone else have any information on this same issue?
"What a Motorola Repeater is capable of just by the Model #???

[Repeater-Builder] Re: Archive Messages

[Randy]

--..Thankyou..
>
> Randy,
> 
> I am flattered by your comment, but you give me more credit than I 
am due.
> The model numbers usually indicate the band and power level, but 
not the
> frequency split within a band.  For example, a typical Micor 
repeater
> station might have a model number of C73RCB-3106BT.  I know from 
that model
> number is that it is a 100 watt, continuous-duty VHF repeater 
station, but
> I cannot tell which split (132-142, 142-150.8, 150.8-162, or 162-
174 MHz) it
> is built for until I look at the modules installed in the station.
> 
> 73, Eric Lemmon WB6FLY
>  
> 
> -Original Message-
> From: Repeater-Builder@yahoogroups.com
> [mailto:[EMAIL PROTECTED] On Behalf Of Randy
> Sent: Wednesday, September 24, 2008 2:54 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Archive Messages
> 
> I see where Eric wb6fly has made reference of what repeaters are 
> capable of transmitting, just by the model numbers.
> Would anyone else have any information on this same issue?
> "What a Motorola Repeater is capable of just by the Model #???
>

Re: [Repeater-Builder] Re: Wanted: 2-port controller

[Jim Brown]

As I recall, the DTMF must be entered on the repeater port on the NHRC-4 and 
there is no command possible from the link port.

The Ver 3.x firmware has a command structure like the Cat Auto Zone setup, and 
makes control pretty straightforward.  I have a NHRC Micro conroller (single 
port) that has the Zone command structure, and I like that one also.

73 - Jim  W5ZIT

--- On Wed, 9/24/08, Joe Burkleo <[EMAIL PROTECTED]> wrote:
From: Joe Burkleo <[EMAIL PROTECTED]>
Subject: [Repeater-Builder] Re: Wanted: 2-port controller
To: Repeater-Builder@yahoogroups.com
Date: Wednesday, September 24, 2008, 7:19 PM











Jim,

I have not looked at the NHRC-4 lately. I have used them in the past

and they are a good controller also. Can you now command the

controller via DTMF from the link port? I know in the past you could

only command the controller with DTMF from the main repeater port.

This is why I started using the Linker IIa when I needed a 2 port

controller.



Thanks,

Joe



--- In Repeater-Builder@ yahoogroups. com, Jim Brown <[EMAIL PROTECTED]> wrote:

>

> The NHRC-4 two port controller does a nice job.  I have 3 that I

built from kits and have less than $70 a piece in them.  The software

upgrade they are delivering now is very straightforward to use and

works very well.

> 

> 73 - Jim  W5ZIT

> 

> --- On Wed, 9/24/08, Joe Burkleo  wrote:

> From: Joe Burkleo 

> Subject: [Repeater-Builder] Re: Wanted: 2-port controller

> To: Repeater-Builder@ yahoogroups. com

> Date: Wednesday, September 24, 2008, 6:17 PM

> 

> 

> 

> 

> 

> 

> 

> 

> 

> 

> 

> Sorry I do not have anything used. Not sure what a new

CAT200 will set

> 

> you back these days, but if you are looking for a inexpensive 2 port

> 

> controller, I would look at one of Brian's Linker IIA ICS controllers

> 

> for under $140.

> 

> 

> 

> Joe

> 

> 

> 

> --- In Repeater-Builder@ yahoogroups. com, "kk2ed"  wrote:

> 

> >

> 

> > I have a need for a cheap 2-port controller for a commercial repeater 

> 

> > project. One repeater and one link port.  

> 

> > 

> 

> > Before I go order a new CAT 200, does anyone on the list have

something 

> 

> > similar that they're looking to get rid of?

> 

> > 

> 

> > 

> 

> > Thanks

> 

> > Eric

> 

> > KE2D

> 

> >

>




  




 

















  

[Repeater-Builder] Community Tone board question

[Peter Dakota Summerhawk]

I think I know the answer to this but I am going to confirm it. The
community tone board only filters out what talk group you don't want to
hear. And it won't let you if you have multiple groups on the same pair talk
over each other. Am I correct on this? The reason I ask is that we have
several groups that want to be on the same pair but want different PL's  but
the machine wont let two people with different pairs talk at the same time
if I am not mistaken. We only have one pair for this site (VHF) and they
want several talk groups for grounds, maintenance, banquets, housekeeping,
ad the front desk.

 

Let me know of I am right on this or if I am being crazy.

 

Thanks

Peter

Re: [Repeater-Builder] Community Tone board question

[Brian Poellnitz]

Hi Peter,

The tone panel's function is to let each group hear their own users, but 
it doesn't prevent someone from "stepping on" someone else when the 
repeater squelch is already open (as it is when a valid user is 
talking).  Most radios have an activity light that will indicate if the 
channel is in use.  Motorola (and probably other) mobiles usually go 
into "monitor" when the mic is taken off-hook, so anyone already using 
the repeater would be heard.  I guess you'd say the panel is a "traffic 
cop" but it won't keep someone from "running the light".

Hope that made sense.  Hihi. :)

73's de N4BWP
Brian

Peter Dakota Summerhawk wrote:
> I think I know the answer to this but I am going to confirm it. The
> community tone board only filters out what talk group you don't want to
> hear. And it won't let you if you have multiple groups on the same pair talk
> over each other. Am I correct on this? The reason I ask is that we have
> several groups that want to be on the same pair but want different PL's  but
> the machine wont let two people with different pairs talk at the same time
> if I am not mistaken. We only have one pair for this site (VHF) and they
> want several talk groups for grounds, maintenance, banquets, housekeeping,
> ad the front desk.
>
> Let me know of I am right on this or if I am being crazy.
>
> Thanks
>
> Peter
>
>
>   

[Repeater-Builder] Re: Community Tone board question

[Joe Burkleo]

Peter,
I will take a stab at this and some of the others can jump in and help
out also.

Yes, you are correct in your assumption as to how a community repeater
works. It is a single channel repeater with the ability to have
different user groups that each have their own PL or DPL Tone. The
repeater can only handle one conversation or user group at a time. 

Typically the mobile radios had a wire connected to either the hang up
button on the microphone or they used a hang-up box that contained a
switch inside it. The way this worked was when the microphone was hung
up in the holder, the radio was in PL mode and you could only hear
conversations from your group. When the microphone was picked up or
taken off hook to make a call, the radio was then changed to carrier
squelch mode and you could hear if the repeater was in use by another
group, or was available for use by you and your group. If it was busy,
you just waited your turn and if it was clear, you were good to go. It
was not uncommon to have 6-8 or more different user groups on a single
community repeater.

Joe  


--- In Repeater-Builder@yahoogroups.com, "Peter Dakota Summerhawk"
<[EMAIL PROTECTED]> wrote:
>
> I think I know the answer to this but I am going to confirm it. The
> community tone board only filters out what talk group you don't want to
> hear. And it won't let you if you have multiple groups on the same
pair talk
> over each other. Am I correct on this? The reason I ask is that we have
> several groups that want to be on the same pair but want different
PL's  but
> the machine wont let two people with different pairs talk at the
same time
> if I am not mistaken. We only have one pair for this site (VHF) and they
> want several talk groups for grounds, maintenance, banquets,
housekeeping,
> ad the front desk.
> 
>  
> 
> Let me know of I am right on this or if I am being crazy.
> 
>  
> 
> Thanks
> 
> Peter
>