Re: Homebrew is alive and well in Vienna Virginia #homebrew
The N6QW rig is worth looking over.toggle quoted messageShow quoted text
I am a little bit frustrated that there is no complete and current schematic presented.
If somebody has a complete schematic, would be nice if you could post it.
No mention of previous work, but does look like a Bitx20 derivative.
It is almost as old:
The N6QW rig is simple in part because of all the relays.
At this power level I'd prefer zero relays for better reliability.
When evaluating how simple it is, keep in mind that it has ready made
ADE-1 mixers and a purchased crystal filter, which does make construction easier.
The BItx rigs keep costs to a minimum by using 3904's almost everywhere,
discrete mixers, and a scratch built crystal filter.
I've been thinking a good way to reverse an IF with mixers at each end plus an amp and a crystal filter
is to have have RC low pass and high pass filters at each end to separate audio and rf,
the tx/rx switch is done solely by programming different Si5351 frequencies for the mixers.
Seems better and cheaper than using relays.
On Fri, Apr 16, 2021 at 06:35 AM, Dean Souleles wrote:
Hi all -