Hi Jeff,
>what are you using? are Arcom? or Scom?
I exchanged messages with Jim. He's building his own control system.
>If your using a arcom, take the jumper out of the delay board headers that
>jump the audio for each port, bring the audio out line (JP10-2,JP11-
2,JP12-2) from each header into a mixer, run the output of the mixer to the
audio input pin on the delay board, then just split the output of he delayboard
however you want to, to the audio input pin on the delay board header
(JP10-3,JP11-3,JP12-3), then you can set each tx level via the onboard pots.
>Not sure on the scom, have to look at a schematic.
In the 7330 each RX input has its own audio delay and each TX output has its
own 3-input mixer with a driver amp and level pot. No mods needed.
73,
Bob
Bob Schmid, WA9FBO, Member
S-COM, LLC
PO Box 1546
LaPorte, CO 80535-1546
970-416-6505 phone
970-419-3222 fax
www.scomcontrollers.com
-----Original Message-----
From: Jeff Ackerman <kg6u...@gmail.com>
To: Repeater-Builder@yahoogroups.com
Sent: Sun, May 16, 2010 2:08 am
Subject: Re: [Repeater-Builder] Techniques for combining multiple audio sources
what are you using? are Arcom? or Scom?
If your using a arcom, take the jumper out of the delay board headers that jump
the audio for each port, bring the audio out line (JP10-2,JP11-2,JP12-2) from
each header into a mixer, run the output of the mixer to the audio input pin on
the delay board, then just split the output of he delayboard however you want
to, to the audio input pin on the delay board header (JP10-3,JP11-3,JP12-3),
then you can set each tx level via the onboard pots.
Not sure on the scom, have to look at a schematic.
Thats the concept anyways.
On Fri, May 14, 2010 at 2:49 PM, Jim (List) <jim.l...@stuckinthemud.org> wrote:
I'm in the process of building a repeater that will have multiple ports (3
different radios).
Only one radio be receiving at a time, the other two transmitting.
Therefore I have 3 audio sources (from different types of radio, at different
levels), each being fed to the other two radios and requiring individual
settings.
In the middle of this I want to put a delay board, but to keep the cost down
only have one.
What's the best arrangement for combining the incoming audio, and then setting
the levels for each TX?
Thinking along the lines of a FET audio mixer for each RX, setting all to the
same level of input to the delay board, then something on the output from the
delay (would I need another series of buffers, or would three 100k pots do?) to
adjust the TX level for each radio type?
Thanks for any advice!
Jim
