Homebrew Transmitter-Anyone Ever Seen This Circuit?

[Brian Carling]

Looks like the guy did a great job on it, especially the front panel and choice of
VFO dial.

I don't recall ever seeing any article about a rig with 5894 final for HF. Should be
good for about 50-60 watts though, and no reason not to use a 5894. Should be
roughly equivalent power to using a pair of 2E26s in parallel I would think.

Is the final push-pull or pi-parallel output tank?

On 18 Jan 2003 at 18:32, David Hollander wrote:

> I know this is not a Heathkit, Hallicrafters or National but was
> hoping someone on the list might be able to help me.
>
> A beautiful homebrew CW transmitter followed me home from last
> weekend's hamfest. It is an 80-10 meter VFO transmitter with a 5894 in
> the final. Looks like I finally have a use for the spare 5894's in my
> garage..LOL
>
> In looking through old QST's, I have never seen an HF transmitter
> using this tube for a final as I believe it is VHF tube. The rest of
> the lineup is a 6AG7 driving a 5763 driving another 5763 into the
> 5894. The VFO is a 6SJ7 driving a 6F6 (I think). I have not opened up
> the VFO compartment but I doubt their is a tube inside.
>
> Does this circuit  lineup ring a bell with anyone? I plan to put this
> thing on the air with my BA receivers. If anyone remembers such a
> transmitter circuit from QST or CQ, could you please fill me in. I
> have attached some photos of this radio. The construction is superb.
> It is missing the plate tuning cap but that should not really be a big
> deal.
>
> http://members.cox.net/radiostuff9/hb_xmtr.jpg
> http://members.cox.net/radiostuff9/hb_xmtr2.jpg
> http://members.cox.net/radiostuff9/hb_xmtr3.jpg
> http://members.cox.net/radiostuff9/hb_xmtr4.jpg
>
> 73 and Tnx for any help,
> Dave N7RK
>
> --
> ***********************************************************
> Dave  N7RK                    http://members.cox.net/n7rk
> Phoenix, Arizona         *DXCC Honor Roll*    *WAZ#23 - 75 Meter SSB*
>
>             ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX
>
> Boatanchor Collector Extraordinaire preferring Hallicrafters, National
> and what ever else looks interesting!
>
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