"William Warren" ) writes:
"Brian Denley" wrote in message
news:WCa4c.11250$i76.191312@attbi_s03...
William Warren wrote:
I'm interested in Hammarlund's receivers, but I know very little
about the various models in between the HQ-129X and the
HQ-110/170/180's that (I thought) ended the line.

Is there a comprehensive list of the various Hammarlund models,
showing their capabilities, produciton dates, and specs?
[snip]

William:
See: http://www.hammarlund.info/ which is the home page of the Hammarlund
Historian!

BTW, I have a wonderful HQ-150.
--
Brian Denley
http://home.comcast.net/~b.denley/index.html

Thanks to all those who replied: the links have answered my questions and
will provide a good reference source.

Brian, since the HQ-150 is single-conversion, how well does it handle
image-rejection? Is the Q-multiplier "reject" feature useful there?

The Q-Multiplier will not do a thing for image rejection. That would
be determined by front end selectivity, and the placement of the IF
frequency in reference to the signal frequency (ie if the IF is low
compared to the signal frequency, then image rejection is lower than
if the IF is high in frequency relative to the signal frequency).

While there was a period in the sixties when there were a fair number
of construction articles that featured front-end Q-multipliers, which
were supposed to improve image rejection (because it improved
front end selectivity), the Q-multiplier in the Hammarlund (and most
or all commercially made receivers) operate at the IF frequency, where
they only affect IF selectivity, not image rejection.

Michael VE2BVW