[1000mp] Af Out & Monitoring Transmitted Audio
Mark Marsden
[email protected]
Tue, 09 Mar 2004 09:24:36 +0000
Hi Steve
The input impedance of the line-in socket on a sound card is likely to be i=
n the order of 50khms so I don't expect any problem driving it with the DVS=
output. The output level is not variable on Rx, from memory I think it's =
about 1Vpp max. On Tx the level depends on the Mic gain setting.
Don't connect two MP outputs together. You could feed each one into differe=
nt sound card inputs, e.g., line-in and mic-in and use the sound card volum=
e control mixer panel to set each level.
73 Mark G4AXX
>>> [email protected] 08/03/04 17:24:59 >>>
Mark,
Thanks for the quick response. Btw, I initially hit the "reply" button
ahead of entering any text so you may get a spurious email from me prior to
this.
Just one question - currently I use the "af out" to connect straight to the
"line in" on my soundcard so could I use pin 2 on the 7 pin DIN socket
instead? Or are there likely to be issues with this as I also use the "af
out" for PSK and MMTTY? Is it a constant level, or variable?
In fact I use 2 x FT1000MPs in SO2R operation for contests so would need to
(say) take a feed from pin 2 of each DIN socket into "line-out" connector.
Would this be OK ?
73
Steve
GW4BLE
----- Original Message -----=20
From: "Mark Marsden" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Monday, March 08, 2004 5:12 PM
Subject: Re: [1000mp] Af Out & Monitoring Transmitted Audio
Hi Steve
The DVS2 connector has Tx & Rx audio available on pin 2 of the 7 pin DIN
socket - it's used for recording off-air and microphone audio.
See http://granta.digital-crocus.com/Voice_Keyer.php3 for details on a voice
keyer using the DVS2 interface.
73 Mark G4AXX
>>> [email protected] 08/03/04 16:41:55 >>>
Anyone know if the "af out" socket on the rear of the 1000MP carries
transmitted audio too - or if not, is there any way to record both received
*and* transmitted audio from a SINGLE feed?
I need to be able to record both my own voice (i.e. "moni" switched on) and
received audio to disc.
It *appears* that the "af out" is a fixed level, received signal ONLY, but I
am not really sure (yes, I know a lead attached to a headphone plugged into
the jack would confirm, but if some has "been-there-done-that" it would save
some time).
Please post any replies direct to the reflector, just in case anyone else
has a similar query.
Thanks
Steve
GW4BLE
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