The Hallicrafters S108. It's alive

Glen Zook gzook at YAHOO.COM
Sun Dec 16 11:43:50 EST 2007

20 dB with single conversion and a 455 KHz i.f. is
pretty good at 30 MHz.

Back in the early 1960s there was a new Official
Observer in the midwest who issued over 1000 notices
for "out of band" operation on 40 meters.  It finally
took a number of letters and even some telephone calls
to the ARRL before they "looked" at the situation. 
The person was using a single conversion receiver with
a 455 KHz i.f. and was "catching" people 910 KHz away
from their actual frequency.  Of course he was
receiving the image!

Glen, K9STH

--- Eric Lawson <elawson at INFICAD.COM> wrote:

Can anyone give me an idea as to how "high" the image
rejection should be at 30MHz with a radio with a
single RF stage and a 455KHz IF?
This radio has about 20dB.

Glen, K9STH


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