[Heathkit] HG-10b vfo question

[Jim Goudie]

Hi Ron,

Thanks for your response!  First…. that was OPR as in operate. ;-)

Also I didn’t mention it, but the OB2 VR tube has been replaced by a Zener diode which regulates the voltage well.

73, Jim

Jim Goudie   —  jagoudie at comcast.net
610 Kraybill Church Rd
Mount Joy, PA 17552

> On Mar 2, 2019, at 7:51 AM, Ron Youvan <ka4inm at gmail.com> wrote:
> 
> On 3/1/19 21:11, Jim AF3Z Goudie wrote:
> 
>> I’ve recently revived an HG-10b vfo.  Why would the frequency of the vfo shift about 700 hz between being on SPOT and being on OPR?  or is that normal?
> 
>  I don't know much about these, but if you watch the VR tube while
> changing the switch, the glow should change but it should never go off.
> The Voltage (108 Volts) across the VR tube should not change very much.
> 
>  The OB2 requires in input Voltage of 133 Volts under all conditions.
>  (before the 10 k at 10 Watt resistor, R11)
> 
>  QPR?  did you mean QRP?
> -- 
>  Ron  KA4INM - Youvan's corollary:
>                Every action results in unwanted side effects.
> ______________________________________________________________