Frank wrote:
Steve Reinhardt wrote in message
news
Frank wrote:

Steve Reinhardt wrote in message
...


I just repaired my TR-3, and put it on the air. I'd forgotten what a
nice rig it is. Now, I've started to think about how much better it
could be. What if one was to rip out the entire frequency control
section (VFO, xtal osc, mixer, etc) and replace it with a DDS
synthesizer. It turns out that the display would fit in the opening of
the tuning dial. There would be excellent frequency stability, no
backwards tuning on 20M, 2-3 less tubes to save heat and power. It just
wouldn't be a Drake anymore...

And don't get me started on a lightweight switching supply to replace
the AC-3. I might do that anyway, since I wouldn't be destroying any
hardware.
---snip---

Perhaps your TR-3 (my first real SSB rig) would be
better off restored to like-new condition---there were considerably less
TR-3's manufactured than Command Sets.




Yeah, thus my point about getting a basket case to play with. My current
TR-3 will be cleaned up so it's representative of the best 1963 had to
offer. The 'new' one may fall under the doctor's knife (;-)...

Steve
AB1EN

In article , Steve Reinhardt wrote:
Yeah, thus my point about getting a basket case to play with. My current
TR-3 will be cleaned up so it's representative of the best 1963 had to
offer. The 'new' one may fall under the doctor's knife (;-)...

Since the TR-5 had an external DIGITAL VFO, maybe you should "convert"
your TR-3 that way. THen you have the best of both worlds. A pto for
tuning in that wandering signal by hand, and a Digital VFO for memories,
more solid frequency control etc.

Geoff.

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