[AMRadio] Question about HQ-180


WA5VGO hbrnut at suddenlink.net
Mon Sep 11 09:55:28 EDT 2017


Hammarlund originally placed a plastic dust cover over the capacitors. 
They discovered that removing it improved stability so stopped using it. 
They also recommended that it be removed from receivers that had it.

Darrell


On 9/10/2017 8:16 PM, Steve Wender wrote:
> Hi All,
>
> I am about done bringing an HQ-180 back to life.  Because there seemed 
> to be several versions on the alignment procedure, it took a while to 
> figure it out.
>
> The question I have is about whether the two variable caps for the 
> main tuning and bandspread are shielded.  I have seen some pictures 
> showing what looks like an aluminum box over them.  In fact there is a 
> bolt sticking up from the caps that can be used to hold down the 
> shield covers.  Do you think these are necessary? My HQ-180 doesn't 
> have them. Any opinions?
>
>
> Thanks,
>
>
> Steve
>
> KC5WN
>
>
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