On 1/4/11 11:47 , Kevin Alfred Strom wrote:
On 1/4/2011 8:40 AM, lkdubb wrote:
I recently purchased a Hammarlund HQ110A and I cannot get it to operate.
It powers up, the lights and meters seem to function properly, but I
cannot get any reception - just white noise. I do not have external
speakers, so I use headphones....I do not have a proper antenna, so I'm
just using a length of wire....since this is all new to me, I'm not sure
of how to set the various controls on the unit (pitch, sensitivity, AVC.
LIM, audio gain, freq, selectivity, multiplier).
Can anyone offer me some advice?
Also, how hard is it to find parts and to get repairs on these units?
Thanks.






Sensitivity all the way up, AM mode, limiter off, peak up the "antenna"
control, audio gain for a comfortable level, tune around the 7-7.3 MHz
band daytime or 3.5-4 MHz band at night -- there should be lots of
signals. If not, try replacing the tubes one at a time. Jiggle the
bandswitch -- its contacts (and some of the potentiometers) may be dirty
with age and need to be spritzed with WD-40 or a cleaner. Beyond that,
the set may have developed some bad capacitors or other components. The
manual for the receiver is he

http://hamradiomanualsonline.com/200...ervice-manual/


The best place to find a real expert to help you will probably be:

http://amfone.net/Amforum/index.php

I'd highly recommend joining and participating there.


All the best,


Kevin, WB4AIO.



Hammarlund's typically have more sensitivity than may actually be
used. Turning RF Gain all the way up, and turning off the limiter will
drive the front end into blocking.

Turn the limiter off, yes, but increase sensitivity until you
encounter artifacts, or distortion or quiet resulting from severe clipping.

WD-40 is not really recommended for pots and switches. Caig products
for cleaning pots and switches are a better choice.

Replacing caps on a Hammar is quite easy. Alignment can, depending on
model, be done using nothing more than non conductive tools and WWV.

Congratulations. A nice rig.