[CQ-Contest] SO2R boxes

[Lee Hiers]

On 3 Sep 2003 at 5:30, Larry Schimelpfenig wrote:

> The commercially produced SO2R boxes all look great, but if price is an
> object and you don't need all the function, I have to agree that duplicating
> the box in the "NA" manual is the way to go. It doesn't have to be
> expensive, especially if one has a fair junk box as a source for connectors.
> The heart of the thing is some small low voltage relays available from the
> local Radio Shack for around five bucks a pop. 

I don't know what the NA box does, but for a long time I got by just fine using a 
homemade RX switcher made from a guitar switch (nice big handle) that allowed Left only, 
Right only, or Both in my headphones.  The TX switching was done automagically in TR, 
using 2 LPT port keying interfaces.  Worked great.

The only reason I'm using the DX Doubler now is that I got a good deal on one used 
(including two cables that matched my radios!).  It's got a little more flexibility as 
far as switching the 2nd rig into both ears while XMITing - which lets me leave my 
sidetones turned up for non-contest operating.  More importantly, it's got built-in 
microphone audio switching, which I would had to have worked out on my own otherwise.

Oddly, the guy I purchased the DXD from was getting rid of it because he'd gotten a new 
WX0B box...

73 de Lee

-- 
Lee Hiers, AA4GA
Cornelia, Georgia