DX60 and HR-10 worthwhile mods

[Brian Carling]

I find that the TUNE UP is critical on mine.
If I don't get the loading and the grid current just right she WILL 
chirp a bit!

It can be done - at least with my nice DX60B.

What is that screen resistor change?

On 11 Feb 2006 at 19:07, Goss, Ed wrote:

> I never had any trouble with drift using my HG-10B and DX-60B, but I did have a problem with chirp on CW.  It was very slight, but I could never get the VFO to stop pulling slightly upon key down.  I did adjust the dropping resistor (per the manual) in the VFO regulator circuit with no effect on the slight chirp.  Using a crystal for frequency control sounded just perfect.
> --Ed G--
> 
> 
> 
> -----Original Message-----
> From: Heathkit Owners and Collectors List on behalf of Brian Carling
> Sent: Sat 2/11/2006 4:31 PM
> To: HEATH at LISTSERV.TEMPE.GOV
> Subject: Re: [HEATH-TEMPE] HR-10 worthwhile mods
>  
> On 9 Feb 2006 at 13:23, Bill Coleman wrote:
> 
> > The DX-60 isn't a bad MOPA rig for around 50 watts out, and the  
> > HG-10, although a bit drifty by modern standards, isn't too bad, either.
> 
> The DX60 is actually a three stage rig:
> 6CL6 - 6CL6 - 6146
> 
> and a very fine one at that, in my opinion!
> The HG10B makes for a relatiovely styable VFO compared 
> to most others of that era.  I worked a guy the other day who 
> was using an HG10B/DX60 set-up and I could not perceive 
> any drift whatsoever throughout our 40m CW QSO.
> Now maybe if we had been on 15m or 10m it might have 
> been another story!
> 
> 73 de AF4K, Bry
> 
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