[App_rpt-users] Using a Master II

Thu Oct 7 01:13:18 UTC 2010

try setting the rxboost=0  it looks like your signal is very loud and is overloading
the A/D.

JIM

From: n3fe at repeater.net
To: jrorke at cogeco.ca; app_rpt-users at qrvc.com
Date: Wed, 6 Oct 2010 20:54:11 -0400
Subject: Re: [App_rpt-users] Using a Master II

Jon,

I just got done checking things
out.  The same audio that is located on Volume Squelch hi is located on
the backplane.  I just traced the circuit back and double checked it with
my VOM.  Here is a link to the file I used many years ago.     http://www.scomcontrollers.com/downloads/7kgem2bs.pdf

I fail every time I run the RX
squelch detect from radio-tune-menu.  Here are the results for that…

tune rxnoise maxtries=12,
target=27000, tolerance=2750

tries=0, setting=2, meas=32767

tries=1, setting=2, meas=32767

tries=2, setting=2, meas=32767

tries=3, setting=2, meas=32767

tries=4, setting=1, meas=32767

tries=5, setting=1, meas=32767

tries=6, setting=1, meas=32767

tries=7, setting=1, meas=32767

tries=8, setting=1, meas=32767

tries=9, setting=1, meas=32767

tries=10, setting=1, meas=32767

tries=11, setting=1, meas=32767

DONE tries=12, setting=63,
meas=32767, sqnoise=20936

ERROR: RX INPUT ADJUST FAILED.

If I set the squelch setting low
manually I can hear the squelch tail everytime I unkey.  If I have someone
with a noisy but legible signal it just won’t hold.  I can go to cas
and it will work just fine.  Could it be the PL detect that is holding it
from digging?

Any other suggestions?

Corey  N3FE

From: app_rpt-users-bounces at qrvc.com
[mailto:app_rpt-users-bounces at qrvc.com] On Behalf Of Jon Rorke

Sent: Wednesday, October 06, 2010 9:53 AM

To: APP_RPT_Users

Subject: Re: [App_rpt-users] Using a Master II

I think the audio out lines on the back plane are
de-emphasized or flat to 3k then it rolls off. Either way In this case that is
not what you want. If you were connecting to a hardware controller and using
the cas/RX mute then it works just fine. 

In the case of using DSP squelch and DSP L decode by the fob/ URI it must be
connected to the Discriminator.  You could also set your node to speaker
out instead of flat and use the USB for the cas connection.  That should
work too. 

I personally like using the DSP Squelch and DSP tone as it is very quick - no
squelch busts! That is... if you have the RX squelch set right. ;-) 

Jon

On 10/6/2010 9:19 AM, Corey Dean N3FE wrote: 

This is making some sense
now.  I did pull off the back plane but I never traced it back to see
where exactly it was coming from.  Many moons ago I followed the Scom 7k
to Master II hookup info.  I have always just used that same spot on all
other controllers in the past without an issue and excellent audio.  I
will give that a try tonight.  I know what pin you are referring to. 
It would be the same pin that you would use in a mobile conversion and it is
also available where the stock PL board would plug in.  

Thanks and I will give it a try
this evening!

Corey

From: app_rpt-users-bounces at qrvc.com
[mailto:app_rpt-users-bounces at qrvc.com]
On Behalf Of Jon Rorke

Sent: Wednesday, October 06, 2010 8:35 AM

To: APP_RPT_Users

Subject: Re: [App_rpt-users] Using a Master II

I have set up a Master II repeater station in full duplex
mode using a URI for dsp squelch and dsp pl decode and it works just fine. The
main thing is to connect it to the volume/squelch hi (raw discriminator) or you
will have problems. The master II should be able to give you 1V p-p output with
1k tone @ 3k dev on the volumw/squelch hi which is not available on the back
plane. You have to pull it off one of the connectors on the drawer. Have to
check my notes on what pin. 

Any way I have a couple of units working in this manner with no problems.

Jon VA3RQ

On 10/6/2010 7:46 AM, Corey Dean N3FE wrote: 

So I have been using a GE Master II repeater (actual
repeater, not a converted mobile) for the allstar node in full duplex repeater
mode.  I noticed it just doesn’t dig too well when using the fob to
decode the PL.  I have a maxtrac on another fob and that will dig into the
noise great.  As a test I hooked up a ts32 and ran the output of that in
the CAS/COR on the fob and it worked great!  I want to try to get the
built in decoder working correctly though.  Another friend of mine is also
running a GE Master II and he is having the same problem.  When we run the
rxnoise level from either the radio-tune-menu or using the radio tune command
from asterisk it always fails.  Anyone have any suggestions on a way to
resolve this?   I have another use for my hardware pl decoder so I
would like to get the USB Frob working correctly!!!!

Corey  N3FE 

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