From: Charles Boling <junk07+ham@boling.us>
To: linux-hams@vger.kernel.org
Subject: Re: soundmodem
Date: Thu, 27 Feb 2014 13:34:53 -0800 [thread overview]
Message-ID: <530FAF7D.5080807@boling.us> (raw)
In-Reply-To: <20140227205136.GK30054@belle.intranet.vanheusden.com>
> http://elektrotanya.com/PREVIEWS/45612216/23432455/transceiver/egyeb/dnt_formel_1.pdf_1.png
So, just to double-check what you've done, here's what I see as pin
assignments:
1 GND
2 (not shown)
3 PTT-Tx (Ground it to transmit)
4 MIC audio in (always on, other wire to Ground)
5 PTT-Rx (Ground it to receive)
6 GND (not used in original mic)
The PTT button is working as a SPDT switch. I don't know how you're
switching, and I didn't look closely at the schematic, but you may not
want RX & TX grounded at the same time; if you're keeping RX on
full-time and doing a SPST switch on TX, you might try disconnecting the
RX to see if your TX audio comes in.
next prev parent reply other threads:[~2014-02-27 21:34 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-27 16:33 soundmodem folkert
2014-02-27 17:08 ` soundmodem David Ranch
2014-02-27 17:37 ` soundmodem folkert
2014-02-27 18:39 ` soundmodem Apostolos Kefalas
2014-02-27 17:45 ` soundmodem Charles Boling
2014-02-27 20:51 ` soundmodem folkert
2014-02-27 21:34 ` Charles Boling [this message]
2014-03-01 21:54 ` soundmodem folkert
2014-02-28 23:24 ` soundmodem Larry Levesque
-- strict thread matches above, loose matches on Subject: below --
2004-10-29 14:17 Soundmodem iw2esa
2004-10-29 14:33 ` Soundmodem Arno Verhoeven
2004-10-29 14:59 ` Soundmodem Rodolfo Brasnarof
2004-10-29 17:16 ` Soundmodem Bob Nielsen
2004-10-29 16:59 ` Soundmodem Tomi Manninen
2002-07-21 3:15 Soundmodem Mike Fenske
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