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Hammarlund HQ-129-X
#21

Alignment was not an easy job. And without a sweep generator, I know I did not align the IF chain properly but I did the best that I could do with my limited alignment gear (Clough-Brengle signal gen, Hantek scope, and some hand tools). It did make a difference. The 5.7 - 10 mc band was way off track and it took several repeated attempts before I finally had it more or less correct.

While the set is more sensitive now, I still have to crank the volume control to get a good listening level. At least now, I do have to turn it down a bit on very strong stations such as local WITZ (990) and WHAS in Louisville (840). This is with the outdoor longwire.

I tried some tube rolling with a few 6H6, 6SN7 and 6V6 tubes but there was no improvement in loudness. Maybe this is the best that the HQ-129-X can do?

In any event, it appears to be ready for reinstallation into its cabinet. I may wait and touch up the RF alignment once more before I do that, however.

One of these days I will need to pull the chassis from the cabinet again and repaint the cabinet the proper color of dark gray. Not this year, though.

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
Hammarlund HQ-129-X - by Ron Ramirez - 08-28-2019, 06:33 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 08-28-2019, 06:45 PM
RE: Hammarlund HQ-129-X - by rfeenstra - 08-28-2019, 07:42 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 08-28-2019, 07:49 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-01-2019, 09:14 PM
RE: Hammarlund HQ-129-X - by John Bartley - 09-02-2019, 08:27 AM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-02-2019, 07:38 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-02-2019, 07:42 PM
RE: Hammarlund HQ-129-X - by mikethedruid - 09-02-2019, 07:49 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-02-2019, 09:29 PM
RE: Hammarlund HQ-129-X - by Paul Philco322 - 09-02-2019, 09:48 PM
RE: Hammarlund HQ-129-X - by mikethedruid - 09-03-2019, 12:04 AM
RE: Hammarlund HQ-129-X - by Eliot Ness - 09-03-2019, 01:03 AM
RE: Hammarlund HQ-129-X - by EdHolland - 09-04-2019, 02:12 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-14-2019, 08:58 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-14-2019, 09:07 PM
RE: Hammarlund HQ-129-X - by Radioroslyn - 09-14-2019, 09:19 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-14-2019, 09:22 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-14-2019, 10:46 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-14-2019, 10:47 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-15-2019, 05:53 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-15-2019, 07:44 PM
RE: Hammarlund HQ-129-X - by Paul Philco322 - 09-15-2019, 08:09 PM
RE: Hammarlund HQ-129-X - by Simon Wa3uay - 09-15-2019, 08:22 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-15-2019, 09:26 PM
RE: Hammarlund HQ-129-X - by Simon Wa3uay - 09-16-2019, 04:44 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-17-2019, 06:56 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-17-2019, 07:03 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-19-2019, 10:00 PM
RE: Hammarlund HQ-129-X - by EdHolland - 09-20-2019, 01:47 PM
RE: Hammarlund HQ-129-X - by Simon Wa3uay - 09-20-2019, 07:10 PM
RE: Hammarlund HQ-129-X - by rfeenstra - 09-20-2019, 08:51 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-20-2019, 10:43 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-21-2019, 07:57 PM
RE: Hammarlund HQ-129-X - by rfeenstra - 09-21-2019, 08:10 PM
RE: Hammarlund HQ-129-X - by Simon Wa3uay - 09-22-2019, 07:06 PM
RE: Hammarlund HQ-129-X - by Ron Ramirez - 09-23-2019, 09:21 AM
RE: Hammarlund HQ-129-X - by kj0002 - 01-05-2020, 09:34 PM
RE: Hammarlund HQ-129-X - by Paul Philco322 - 01-05-2020, 09:55 PM



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