Re: Re: [Repeater-Builder] Simple COR PTT to Echolink serial port interface

[Ron Wright]

John,

You might be right about www.echolink.org, not .com.  Been a while since I went 
there.

On my computer Echolink still does not work.  Can connect to system, get the 
signed on listing, but cannot connect to a station.  Been thru Echolink's 
help and modem fixing, but still not working on my computer.

73, ron, n9ee/r



From: John J. Riddell [EMAIL PROTECTED]
Date: 2007/08/19 Sun PM 07:18:06 CDT
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Simple COR  PTT to Echolink serial port 
interface

  
Ron,  did you mean  www.echolink.org
???

73 John VE3AMZ
- Original Message - 
From: Ron Wright [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 19, 2007 4:07 PM
Subject: Re: [Repeater-Builder] Simple COR  PTT to Echolink serial port 
interface

 Eric,

 At www.echolink.com, the echolink folks, sell an interface board for it. 
 It is a small ~3x3 board with serial port to the computer and I/O for the 
 repeater.  They provide tx an rx audio and ptt.  Think also COS.  Been 
 about 5 years since I played with ours.  It is still running 24/7.

 The control board has a DTMF decoder and allows one thru the repeater 
 access nodes, turn on/off connections, enable/disable the echolink, etc.

 I think it cost about $50.  We use one here and it simplified things 
 greatly.  The only problem was the audio...the computers often are not at 
 ground and hum can be a problem.

 73, ron, n9ee/r




From: kk2ed [EMAIL PROTECTED]
Date: 2007/08/19 Sun PM 12:15:23 CDT
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Simple COR  PTT to Echolink serial port 
interface


Good Afternoon,

Has anyone come up with a simple circuit to tie a repeater
controller'wbrs port to a PC's serial port for Echolink?

I have customized a few Rigblaster type units in the past to add COS
funtionality, but the more I have looked at them, the more I think
they are a waste of money.

A simple circuit consisting of a few parts should be enough to adapt
RTS or DTR for a COS signal to the controller, and the controller's
PTT to the PC's DSR or DCD input. Most of the commercial interface
boxes don't really offer any advantage to the audio paths, so hooking
the sound card directly to the controller's audio in/out paths
shouldn't be a problem.

In the past I've simply tied a radio's COS to the PC's DCD input via
an isolation diode and current-limiting resistor with great success,
and used the DTR to trigger an NPN transistor across the radio's PTT,
but obviously things are reversed on a controller.  I was figuring I
could use RTS as the controller's COS signal, and set the active
hi/lo on the controller accordingly. For the PTT signal, I might need
to invert the PTT output of the controller to control DSC or DCD in
the right active direction.

Anyone have any suggestions or documented circuits before I embark on
this project?

Eric
KE2D




 Ron Wright, N9EE
 727-376-6575
 MICRO COMPUTER CONCEPTS
 Owner 146.64 repeater Tampa Bay, FL
 No tone, all are welcome.







 Yahoo! Groups Links



 




Ron Wright, N9EE
727-376-6575
MICRO COMPUTER CONCEPTS
Owner 146.64 repeater Tampa Bay, FL
No tone, all are welcome.

[Repeater-Builder] rlc-2 ver 4.30

[mooseve3eay]

Do we have anyone in the group too help me with a  prob with our dvr 
tracks syntesized voice works..

[Repeater-Builder] Telewave 6M Duplexer

[mhchaplin43]

I recently acquired a Telewave TRPD-0484 Duplexer (4 10 cavities 275 
Khz spacing) tuned for 47.50 Mhz. This duplexer has an advertisized 
tuning range of +/- 2.5 Mhz from its center frequency which I have 
confirmed. I tried retuning the cavities but only could get them to go 
to approximately 51 Mhz. A call to Telewave confirmed that the duplexer 
could indeed be modified to operate from 50-54 Mhz but the cost would 
be more than my limited budget would allow.

Does anyone know how or have experience with modifying a duplexer of 
this type to move the center frequency to approximately 52 Mhz - 
approximately 5 Mhz higher than its present center frequency???

Any help would be greatly appreciated.

Mike
W7SSO 

[Repeater-Builder] Micor Repeater Squelch... confusing

[Jesse Lloyd]

Hey All,

A while back I built a Micor Repeater. And had all sorts of fun with the
squelch circuit.  Why is there 2 squelches on that unit, 1 for audio and one
for PTT control?  Also Keyed A- and Keyed A+, where are those control lines
generated from, which transistor is it that sinks current for keyed A- and
which one is the source for keyed A+ or even which module does that?  They
way I built it was the simplest way possible (that I know of), I have a
station control module, a squelch gate and a TOT (which I think I could have
omitted but decided not to).  The whole thing is puzzling to me, even though
I did manage to get a nice sounding sensitive HAM repeater out of it (could
never have done it without the manuals)

Thanks Guys,
Jesse