[Hammarlund] aligning my HQ-180

[Al Parker]

Hi Bo, Bob, et al,
	There are "improved alignment notes for the HQ-170 -180's.  One manual 
has it correct, the following will show that, along with some additional 
notes which should be of some help to you.  The link on The Hammarlund 
Historian website, in the "manuals" section is corrupt, I'll fix it 
later, but now, if you just go to 
"http://www.hammarlund.info/download/HQ170_180alignment.pdf"
you'll get them.
	There's also some factory svc notes for them on the "service" page.
	If any of the IF cans won't tune properly, you may have a problem with 
the embedded capacitors in their bases.  I have some info on that fix 
somewhere, it's not easy, but is necessary if it's a problem.
73,

Al, W8UT
www.boatanchors.org
www.hammarlund.info

"There is nothing -- absolutely nothing -- half so much
worth doing as simply messing about in boats"
Ratty, to Mole

On 7/27/2014 9:32 AM, Bob Camp wrote:
> Hi
>
> You will have two problems with the 204. It’s not really very stable, so warm it up for a while (yes transistors warm up). The second is that it does not have an RF tight enclosure or attenuator. For a good alignment source, you want your signal to be *only* on the output terminals. Signal running all over the place makes things tough. The simple solution often is to put the generator far away from the radio. That’s not very convenient, but it’s easier than buying a new generator.
>
> To answer your question, slap a 50 ohm load on the generator and a 20 db coaxial attenuator if you need a 50 ohm source. My *guess* is that you won’t see any benefit from doing that.
>
> Bob
> KB8TQ
>
> On Jul 27, 2014, at 9:04 AM, Robert Sauvan <rsauvan at beyondbb.com> wrote:
>
>> Hi all,
>> I am getting ready to align my HQ-180 and had a question about one of my signal generators. I have a HP-204 B signal generator and it has a 600 ohm output. Is that a problem or do I need to step that impedance down to 50 ohms? This is the only generator I have that will put out a 60kc signal source to align my low IF. If I need to step the impedance down, how do I go about that, just add some resistors in line to bring it to 50 ohms?
>>
>> Thanks-Bob-W0YBS
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