[CQ-Contest] 2 radio audio mixing?

[Randy Thompson]

I also do the simple switching except I do it with toggle switches instead
of a rotary switch.  I have a switch for the right ear and one for the left.
This lets me put any radio in any ear at any time.  (Yes, the rotary switch
is probably better, but been using this same dirt simple box for 24 years
now.)

I tried the mixing method using a potentiometer one time.  It was completely
disorienting for me.  I need the complete separation of audio into each ear
to provide the spatial relationship of what signal is coming from which
radio.

Randy, K5ZD

> -----Original Message-----
> From: Jeffrey Steinman [mailto:Jeffrey.Steinman.steinman at nt.com]
> Sent: Monday, June 15, 1998 10:25 AM
> To: Jay, WX0B; w2up at itw.com
> Cc: cq-contest at contesting.com
> Subject: RE: [CQ-Contest] 2 radio audio mixing?
> 
> 
> 
> I use stereo headphones and a dumb box with a 3 position, 2 
> pole rotary
> switch. Left position = left radio/both ears, center position = left
> radio/left ear and right radio/right ear, right position = 
> right radio/both
> ears. Have heard others like Jay who use a potentiometer to 
> mix audio in
> both ears and find it helps. I've never tried it so can't 
> comment on it's
> effectiveness. Others ?
> 
> 73
> 
> Jeff  N5TJ
> 
> > -----Original Message-----
> > From:	Jay, WX0B [SMTP:wx0b at arraysolutions.com]
> > Sent:	Monday, June 15, 1998 7:35 AM
> > To:	w2up at itw.com
> > Cc:	cq-contest at contesting.com
> > Subject:	Re: [CQ-Contest] 2 radio audio mixing?
> > 
> > 
> > Barry,
> > 
> > I built a little box with a 300 ohm 1 turn pot and a couple 
> of 180 ohm
> > resistors.  Basically I take the Speaker Output jacks from 
> each radio
> > and cable them to the box which is mounted under the front 
> lip of the
> > operating position so I can reach it with my left hand easily.  
> > 
> > I bring each + audio line to a 180 ohm resistor first to 
> add protection
> > to the audio amp in the rig. Then one to each end of the 
> pot.  I also
> > take each end of the pot and rout them to a stereo jack.  
> Right rig in
> > right ear and Left rig in left ear.  I wire the wiper to 
> short one end
> > of the Pot on the left rig. 
> > 
> > When I set it up I put the pot in full CCW and adjust the 
> rigs for equal
> > audio in both ears Stereo.
> > 
> > Now by putting the pot all the way CW I have (300 ohm max) 
> I have a mono
> > both rigs , by moving it CCW I can adjust the Mix of 
> Stereo.  Usually I
> > find I don't like max separation between both ears but some 
> mix of both
> > radios in both ears is better for me.  Maybe some 
> audiologist can tell
> > us why.  But its a spatial effect that you have being able 
> to adjust the
> > radios "spacing" in your head thats kinda fun.  
> > 
> > Sometimes it cool to put the radios on the same freq for DX 
> work Say on
> > two different antennas and mix them together.  It helps. 
> You can null
> > the noise too.  
> > 
> > I also play with the audio gain in both radios to add 
> another adjustment
> > to the system.  
> > 
> > I wonder what guys like N5TJ use.
> > 
> > Jay, WX0B
> > 
> > Barry Kutner wrote:
> > > 
> > > I'd appreciate if anyone in single-op/2 radio land could 
> explain to
> > > me how they split the audio in the headphones for each radio.
> > > Tnx/Barry
> > > --
> > > Barry Kutner, W2UP              Internet: w2up at itw.com
> > > Newtown, PA         FRC         alternate: barry at w2up.wells.com
> > > 
> > > --
> > > CQ-Contest on WWW:        http://www.contesting.com/_cq-contest/
> > > Administrative requests:  cq-contest-REQUEST at contesting.com
> > 
> > -- 
> > +-----------------+---------------------------------------------+
> > | ARRAY SOLUTIONS | Jay Terleski email: wx0b at arraysolutions.com |
> > |    WX0B         |              http://www.arraysolutions.com  |
> > +-----------------+---------------------------------------------+
> > 
> > 
> > --
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> > Administrative requests:  cq-contest-REQUEST at contesting.com
> 
> 
> --
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