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As a homebrewer, it is best to keep a set of outboard LPFs that can be swapped around or left connected to their antennas. You can make them as needed. - f [email protected]> wrote:

I have tried several of the small switcher regulators, but in most cases I had to add additional filtering to reduce noise. When I have to run a Nano or pro-mini with more than about a 9V, I just feed

Sounds to me like Ryan was asking whether this discussion somehow applies to the transmit LPF's. And that Farhan is thinking only about receive. Jerry

Thank you Bill for sharing a very educational video. I really enjoyed watching. Larry WA9DOH n2cqr@...> wrote:

Ryan, You could do it with two tunable filters : first covers 3.5 to 7 mhz, the second covers 14 mhz to 30 mhz. Alternatively, you could try low pass filter to cover 3.5 mhz to 7 mhz. In such a case,

Just checked my email link and I couldn't get it to work. It is @yahoo.com? with no Xes

I talked to Willy for about 30 minutes or so. Signals were weak starting out, but picked up and became solid copy. We also worked KC1FSZ, Bruce in Massachusetts who has a great sounding bitx, and also

Band is bad tonight up here in Barrie ON. Not hearing much other than the AM clatter. Where is everyone hanging out? Trying between 7.277 to 7.285. Also trying to work VY0RAC in Nunavut but no copy

Randy WB5YYM and I were on 7.277 til about 8:30 EST worked several stations but most propagation seemed not very good but Randy in AR and my station, W1LY, in RI had a pipeline much of the time well

Bill, that was a terrific story. I studied some physics in college, but the human source of the wisdom often went right past me, as I struggled to understand the concepts. It would have been far more

?I put a 10x mic preamp 1-transistor circuit in one of my bitx40's yesterday and finally it uses about the same signalink settings as my "commercial" rigs....and I can also see output without having

Good steers! Thanks.

Had a brief QSO with W1LY tonight. We were both QRP and I was running a 30 dia loop sitting on the kitchen floor. Yelling ion the mic seemed to help. :) John KC9OJV

Hi Jerry, I know all ebay switchers aren't equal, of course. But, here are some cheapo examples that are success stories; with hundreds deployed in the hamvoip.org project, etc. At less than $0.80

Hearing someone talking to W1LY in and out, but can't make out who. Can't hear Willy. -- John - WA2FZW

I heard W1LY on earlier. ?I'm gonna move up to 7.285, it seemed clear

I'm also on. Hearing nothing in NJ -- John - WA2FZW

I'm on the air, but there's a lot of traffic from the Illinois QSO party at the moment...

There are clearly a few items of ebay electronics about which some fear, uncertainty and doubt is in order. For example, good luck getting 20 AH at 12v out of this: ?

Hi Dale, I'm hopeful that maybe you got a poorly done batch of clone boards. I'll do some more testing. Thanks for your feedback! 73, David KB4FXC