KB0NLY wrote:
> Looking around the web tonight for 6m amp designs using the GI-7B and i came
> across this schematic...
>
> http://yu1aw.ba-karlsruhe.de/shema%201xGI7B%202m&6mmod.gif
>
I'd love to see some photos of the physical layout of that amp.
> I understand the schematic except for one thing.. At the top middle where
> the connection for +Va is shown it comes down to a second connection point
> and then it shows a ground to the left and a connection to what appears to be
> a large cap to the right, i assume its a capacitor as that makes the most
> sense but these foreign guys use different symbols for stuff sometimes. Why
> is that second connection point with the (o) and a ground connection to each
> side there? Seems to be a dead short for the HV.
>
>
To me that represents a feed through or chassis connector. I used to
work on some German industrial RF equipment that used that symbol where
a line passed through a bulkhead. *Sometimes* they were a feed through
cap, but usually just a mechanical feed through.
73
Roger (K8RI)
> He also doesn't mention what the value of this capacitor labeled as Ca should
> be. I know, this could be a stupid NOOBIE question but these foreign designs
> are always so sparse on the information and there is hardly any explanation,
> etc..
>
> I like his design overall though, looks fairly simple, thinking i could do my
> SB-200 conversion so its a 6m/2m amp in one. If anyone has built one of
> these please pass along any info you have! A picture says ten thousand words
> for me.
>
> 73,
>
> Scott
>
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