[Heathkit] VTVM Model IM-28

[Mark K3MSB]

You can easily make one using a 7 or 9 pin tube socket and shield.    This
was a common project in the old ARRL handbooks.

73  Mark K3MSB

Sent from my Android phone
On Jan 4, 2014 10:13 AM, "Ross Stenberg" <k9cox at charter.net> wrote:

> The one megohm resistor in the standard probe is used for DC.
> RF probe info is here:
>
> < http://www.rsp-italy.it/Electronics/Kits/_contents/
> Heathkit/Kits/Heathkit%20309-C%20RF%20probe.pdf>
>
>
>
>
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