[Hammarlund] HQ-180(A) manuals

[Les Locklear]

Ooops...no attachments allowed. If anybody wants a compressed copy let me know.
 
Les


----- Original Message -----
From: Les Locklear <leslocklear at hotmail.com>
To: Bob Young <bobyoung53 at hotmail.com>, <hammarlund at mailman.qth.net>
Sent: 12/9/2023 10:30:24 AM
Subject: Re: [Hammarlund] HQ-180(A) manuals
________________________________________________________________________________

> Attached is "the correct" manual to use for alignment. Previous copies had it 
> wrong. It's also the most complete manual since it cover all variants of the HQ-180 series.
>  
> Les Locklear
> 
> ----- Original Message -----
> From: Bob Young <bobyoung53 at hotmail.com>
> To: <hammarlund at mailman.qth.net>
> Sent: 12/9/2023 9:42:37 AM
> Subject: [Hammarlund] HQ-180(A) manuals
> ________________________________________________________________________________
> 
>> I'm not sure if this got received by the reflector as I usually get a copy right after I send it.
>> 
>> 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
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