[R-390] OT: Other Radios You Like

[Cecil Acuff]

Well I have done that with the R-1051 series receiver.  You need a radio 
with two IF's and two AF sections to pull it off.  Or two similar receivers. 
If you combine the audio outputs you do pretty much eliminate selective 
fading because it happens to each sideband at a different time in most 
cases.  With the stereo headphone technique you hear one ear go down and 
then back up and then the other many times.  Detected audio is preserved in 
one ear or the other allowing one to not miss much that's being said.

It's one off the few things that the R-1051 really excels at!

Cecil...
----- Original Message ----- 
From: "Tim Shoppa" <tshoppa at wmata.com>
To: <R-390 at mailman.qth.net>; "2002tii" <bmw2002tii at nerdshack.com>
Sent: Monday, February 25, 2008 12:16 PM
Subject: Re: [R-390] OT: Other Radios You Like


Don wrote:
> Cecil wrote:

>>Actually I prefer ECSS to syncro and any of these radio's will do
>>that nicely.  The R-75 with the KIWA mods comes real close to the
>>R8B in all regards...I've played with both.  It's not quite the R8B
>>in the syncro department but it's real close and for a third the
>>price.  The DSP is limited but quite handy at times.

> If by ECSS you mean "just listen to AM in USB or LSB mode," it
> generally works pretty well with two caveats [...]

I would like to add that listening to an AM station in ISB (one sideband
to the left ear, the other to the right) is an amazing experience.

It does not eliminate selective fading but instead makes you
much more aware of it.

There are ham-band direct conversion receivers that do I+Q/I-Q
demodulation independently to the two ears. Again, instead of
hiding stuff, it is remarkable for its ability to bring out stuff you
might not otherwise notice or hear. I don't particularly like direct
conversion receivers overall but it's a treat to put the band
inside my head :-).

Tim.

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