Martin Ellis wrote:
> I also have a SB1000 which I built from the kit. Soon after I built it
> (around 1990) I became aware that Heatkit was offering a replacement
> RF choke. I gave them a copy of my proof of purchase (Portland Radio)
> and Heatkit sent me a new RF choke which I fitted to the SB1000.
>
> I believe the new choke was to allow operation on the (new) 17m band.
> The original choke is a same diameter continuous winding.
> The replacement choke has a smaller diameter on the upper part of the
> ceramic former, making two sections.
My ceramic form is one size, so I guess I had the old model. I do not think
Heathkit
is in business any more, but I am going to look into getting an Ameritron
choke.
It's hard to make a good choke when there are so many bands!
Vic K2VCO
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