Thank you for the PDF!!!

How could you make the bandwidth narrower??

Add a transverter

Indeed, It could be. But consider that a Tecsun PL660 costa less than 100usd, is sensitive, sounds good, forse have synch detection, AGC. A ubitx receiver would be interesting but the ubitx is very co

Hello everybody, I use and SL6270 as a mic preamp/compressor. As essentially is a sort of AGC and, in my opinion, works really great at the mic input, I am thinking of adding at C222 of my ver.3. woul

I use it all the time because its stunning simplicity. I also added sma to bnc adapters as most my homemade gear have bnc and are faster to plug/unplug.

Hi, I think you can because you have the right to build one yourself which Is NOT CE by definition.

Defenetely a Zetagi BV-131 one tube amplifier is the best choice for the 12 and 10m bands! It's all in the box, no need for a tuner and an external power supply.

You may try adding one or more 8.2pf caps in parallel at C1. I did similarly with a CB one tube amplifier zetagi BV-131.

As for my understanding a mic preamp is not a solution, nor shouting into the mic is. The issue Is similar to listening without an agc. Sometimes you need to pump up the radio untill a huge signal for

I found I end up using fast devices, where I can understand the output in a picosecond. That Is why I use Antuino all the time. I found useful adding in line attenuators, say -10, -40db, built with Ju

After making some of the mandatory changes and others less orthodox mods, I have stopped using it. Why? In my opinion It works so fine I moved to recover/modify stuff others considered dead or junk (e

I would try with a coax choke at the antenna feedpoint and then measure it with Antuino. I would not be too obsessed to find a 1:1 swr unless your transceiver lowers automatically the power output to

A few months ago I tested a nice 10.7 Mhz crystal filter I bought years ago. Most likely I did damage it with a 7dbm dds, but I cannot remember exactly. Testing using an attenuator and Antuino in SNA

#filters #nano

How much would it cost? I understand it aims to be a low cost device. But how much low?

I have just a really nice 2m loop made by a ham, so my experience is very limited. For this reason if I were to choose, I would try a design from a company I trust, which is called ParElectronics.

Excellent! I would not even though you could do it with air wound inductors on the top band. I see it seems you used high voltage caps (the blu ones). If so it could handle quite a lot of power as wel

That's great! Long life to CBers and SWL!

#antennas #v3

Mini Circuits transformers are really good and many really wideband. Having said this, I think up to 15mhz winding one is cheaper and will be adequate. For higher frequencies higher than 15mhz it is l

Maybe a tuner with included an artificial ground. At HF I think you could use the cheapest green steel wire for gardening.

#antennas #v3