[amsat-bb] Recording TX & RX from one or two radios?

[John, 9H4G]

I use an over ear headset but with a fist mic. I use my mobile phone recorder with its regular hands-free earphone and mic. The mic is inserted in one of the owner the ear headset ear cups. It picks up the full duplex and if 1/2 duplex also is sensitive enough to pick up my voice resonating in the earphones.

73 de John, 9H4G

> On 19 May 2018, at 16:32, Greene, Stephan A <stephan.a.greene at vencore.com> wrote:
> 
> I think you want a "DJ splitter" cable.  Typically a stereo (TRS) plug
> and two separate MONO output jacks, one for the left and one for the
> right channel.  DJ's use one to monitor a track they are playing on one
> channel while cueing up a 2nd track in their headphones; the DJ software
> is configured to output to one track or the other.  Use when you have a
> laptop or tablet with one audio output and don't want to or can't use a
> mixer or 2nd (USB?) audio device.  Usually well-made because DJs hate
> equipment failures mid-gig.  (and we hams hate equipment failures in
> mid-pass!)  I have a Griffin DJ Cable and will have to test this myself.
> Native Instruments (Traktor) and other DJ equipment vendors sell these.
> $10-$12 give or take. 
> 
> The use in this thread is to combine 2 signals into one input jack,
> while keeping them on separate tracks.  Play the recording back in
> software like Audacity as suggested by others. 
> 
> I agree the easiest approach is wire a cheap electret mic for local
> (Uplink) audio.  If you tap audio from your uplink radio mic input, you
> may need to pad down the audio level to the recorder and take steps to
> isolate the recording line from the radio input. 
> 
> The other "splitter" cable described connects left and right channels in
> parallel and is intended .  Usually called a headphone audio splitter.
> You may get a mess unless you wire the plugs from your downlink and
> local audio to put signals on just one channel.   More trouble than it
> is worth IMO.  YMMV.
> 
> 73 Steve KS1G
> 
> -----Original Message-----
> From: John Brier [mailto:johnbrier at gmail.com]
> Sent: Friday, May 18, 2018 10:52 PM
> To: Steve Kristoff
> Cc: AMSAT BB
> Subject: Re: [amsat-bb] Recording TX & RX from one or two radios?
> 
> Probably because I used the wrong term. It is a breakout cable. Here is
> what I have. Haven't used it yet, but it should work.
> 
> <url removed for berevity>
> 
> 73, John Brier KG4AKV
> 
> 
> 
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