[Hammarlund] HQ-180A manuals

[Les Locklear]

That depends on whether you have a HQ-180 or a HQ-180A...
 
Les


----- Original Message -----
From: Bob Young <bobyoung53 at hotmail.com>
To: <hammarlund at mailman.qth.net>
Sent: 12/9/2023 9:03:26 AM
Subject: [Hammarlund] HQ-180A manuals
________________________________________________________________________________

> I have an HQ-180 manual from 1962 and an HQ-180A from 1970 (TECHNICAL 
> DESCRIPTION TEST AND OPERATING INSTRUCTIONS), the directions from the 1970 one 
> tell me to inject 455 KHz into pin 7 of V2, adjust L4 for max signal and then 
> top and bottom of T3, T4, T5 and then the top of T1, the one from 1962 tells me 
> to inject 3035 KHz the same place and do the same. When I inject 455 I get no 
> signal, when I inject 3035 and adjust for max signal (approx 3035.80) I get 
> signal and everything adjusts. Also the newer one tell me to use both sidebands 
> and the 3 KHZ position, the old one tells me to use L sideband and the 0.5 KHz 
> position. When I use the new manual and inject 3035 and follow the directions 
> the circuit resonates at about 3037, old book directions 3035.80. Any ideas? I 
> am inclined to follow the older manual as at least it seems to work.
> 
> Bob
> kb1okl
> ______________________________________________________________
> Hammarlund mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hammarlund
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Hammarlund at mailman.qth.net
> 
> List Administrator: Gary Harmon, K5JWK
> ** For Assistance: gharmon at idworld.net **
> 
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html