[Hammarlund] Re: HQ-160

[Glen Zook]

The HQ-145 is basically the last version starting with
the HQ-120, HQ-129X, HQ-140X, and HQ-150X.

That particular line of Hammarlund seems to be the
most stable.  Much more stable than the HQ-100,
HQ-110, HQ-160, HQ-170, and HQ-180 as well as the
SP-600 series (especially on the upper frequency
bands).

I know that with my original HQ-140X (got rid of it in
the early 1970s and then got another several years
ago) after about a half-hour's warm up that I could
tune in the old Reuter's New York to Havana RTTY news
link (ran 66 wpm but my old Model 15, set for 60 wpm,
could still copy it) walk away, and come back hours
later to page after page of perfect copy.  Now, they
were running 850 Hz shift those days.  But, if the
receiver drifted more than about 50 Hz then the TU
would start having problems.  That was stable!

The other receivers including the Super Pro were not
as stable.  I owned two SP-600-JX-17 models for a
while.  Above about 10 MHz they were very drifty!  The
military used hundreds of these receivers for fixed
frequency operation.  However, they used the crystal
control function to keep them on frequency.  Other
than being "drifty", they were a pretty good receiver.

Glen, K9STH


--- Jim Wilhite <w5jo at brightok.net> wrote:

I have to agree with you on the 145 Gary.  I have used
a 160 in the past and like the audio out of my 145
much better.  My 145 is much more stable then the 160
as well.

=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco


		
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