Question on: HFT-9A tuner (description)

[Multi-Volti Devices]

I seem to remember an early catalog claiming 100W rating, which is
obviously alot of hot air. I think they dropped it to 50W. That is
probably pushing it too. I used one with something larger than I should
have and it did arc the cap. I rotated the knob 180 degrees, and used it
on the other 'side' of the knob rotation.

Murray

Radman wrote:

> Guy et al,
>
> I'm not an authority on Heathkit, but I'll try to give you
> my impression of an HFT-9A tuner.
>
> It's considered a QRP (low power) amateur radio antenna
> tuner. From the looks of the internal parts, it might rate
> at 10 watts maximum RF power rating. It's one of the HW-9
> series of accessory products (eg: the PSA-9 power supply,
> the HM-9 watt meter, etc -- the little *brown* boxes). The
> year of manufacture probably coincides with the very
> popular HW-9 QRP transceiver.
>
> I'm interested in learning the *values* of the two air
> variable condensers in the HFT-9A. They appear to be
> nominal 365 pF, but I'd be curious as to the Heath
> specification for them. (I'm without documentation.)
>
> Thanks in advance for any help on this one,
>
> 73 - Conrad Weiss - NN6CW
>
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