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Old July 13th 09, 01:48 AM posted to rec.radio.amateur.boatanchors
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Default Alignment Question on HQ 129X

On Jul 10, 6:23*pm, "COLIN LAMB" wrote:
If stages are often peaked. *For ham use, it should be acceptable. *One
particular problem may be that am stations will not have full bandwidth, so
the audio may be restricted a bit. *If you are careful, you can emulate the
sweep generator by setting the generaator above, on and below the if
frequency. *The total bandwidth should be the desired wide bandwidth. *Then,
adjust the transformers so that signal level is about the same on all three
frequencies.

A few years ago, I acquired a spectrum analyzer with tracking generator.
Now, alignment of any filters or if stages are so easy that I feel guilty..

I also recall using a BC-221 as a manual sweep generator.

the improtant thing is that you will come close with the old "peak each
stage" approach. *Make sure you do not overload and follow the other
instructions. *I have aligned more than one receiver by ear, when I had
nothing else. *Generally, close is good enough.

Also, make sure you use the proper alignment tools. *I have worked on a lot
of receivers butchered by improper alignment tools.

73, *Colin *K7FM


Colin,
Thanks for the suggestions. I agree the the peaking method should be
okay. I will keep my eyes out of a used sweep gen and upcoming swaps.
I have a good set of alignment tools so I can align without causing
damage. Mike KF6KXG
 
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