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 Post subject: HAMMARLUND HQ-180C Bandspread not working
PostPosted: Feb Sun 11, 2018 6:48 pm 
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Joined: Dec Wed 02, 2009 3:55 pm
Posts: 33
I recently got a very nice early model HAMMARLUND HQ-180C.
It works fine except the bandspread does not work on the two lower bands.
.54-1.05 and 1.05-2.05 mc. I get reception and can hear the xtal calibrator but
the bandspread knob does not change the frequency at all.
The higher bands bandspread work very well without any problem.
The mechanical linkage is good and I sprayed the band change switches with
contact cleaner but no difference.
Would appreciate any help in this matter.

Thanks,
Al
K2DYH


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 Post subject: Re: HAMMARLUND HQ-180C Bandspread not working
PostPosted: Feb Sun 11, 2018 7:38 pm 
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Joined: Jun Sun 19, 2011 2:31 pm
Posts: 5421
Al,

It doesn't work by design on the lower bands, it isn't needed. Your HQ-180C is operating as intended and it was common with many of the better quality receivers not to have bandspread on the lowest ranges since the bandspread capacitance value is optimized for where it is needed (and often bandswitched with different values for different ranges as is your 180).

Rodger WQ9E


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 Post subject: Re: HAMMARLUND HQ-180C Bandspread not working
PostPosted: Feb Sun 11, 2018 8:32 pm 
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Joined: Dec Wed 02, 2009 3:55 pm
Posts: 33
WOW! Many thanks for your very welcome answer Rodger.
I've studied the manual till the cows came home and no mention of that important bit of information. Now I can put my effort into making it look like new.

Thanks again,
Al
K2DYH


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 Post subject: Re: HAMMARLUND HQ-180C Bandspread not working
PostPosted: Feb Sun 11, 2018 8:37 pm 
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Joined: Jun Sun 19, 2011 2:31 pm
Posts: 5421
Al,

You are welcome and enjoy a very fine receiver!

Rodger WQ9E


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 Post subject: Re: HAMMARLUND HQ-180C Bandspread not working
PostPosted: Feb Wed 21, 2018 5:16 pm 
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Joined: Apr Sat 09, 2016 1:26 pm
Posts: 24
Check out this page - many Hammarlund videos!
https://www.youtube.com/channel/UCwRV-S ... rZiVAXM9jA


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