[Hammarlund] HQ-110 alignment

[Julian Bunn]

Several people asked me about the setup I'm using. I've put some
details at the following link:

http://pcbunn.cacr.caltech.edu/jjb/hammarlund/if_alignment.htm

I'm actually using a 1ms sweep rate ... and would be interested
to hear what the disadvantage of a fast rate like this is.

Julian

Kenneth G. Gordon wrote:
> On 5 Apr 2006 at 21:56, njmikec at optonline.net wrote:
> 
> 
>>Someday perhaps you can tell me about sweep generators.
>>I have a 'sweeper' on the way but right now I'm using a sig gen and
>>things are working out well so far.
>>
>>Are you using a sweep gen to do this or just the sig gen part of the
>>Tek?
> 
> 
> It sounds to me as though Julian is using the so-called "visual method" 
> of alignment, which, as far as I'm concerned, is the ONLY way to 
> properly align a multi-stage IF strip.
> 
> The method requires a sweep generator and an oscilloscope.
> 
> I've used the method in the past, and although the first time set-up was 
> difficult for me, since it is not "intuitively obvious", once I had it working 
> properly, it was a real eye-opener concerning how easy it was to get 
> near perfect IF alignment.
> 
> One "secret" is that the sweep rate must be as slow as you can make it, 
> which requires either a darkened room or a 'scope with a long-
> persistence trace.
> 
> Ken W7EKB
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