Hi Stefan, Here is a simplified description of the setup. RX antenna (at the moment, but soon to change or have more than one choice) http://www.n1bug.com/lnv.jpg Then there is a two way splitter. On
Hi Andy, It is the Softrock I am concerned about. I don't know what the FST3253 can handle but I don't fancy replacing them if something were to happen. I tried putting the diodes at the output of th
Thanks Andy. As usual, I've learned something. I guess that's why the Softrocks survived last winter with the RX antenna only 12m from the TX antenna! 73, Paul N1BUG
Hi Stefan, I did not yet measure the voltage across the diodes. When I finish the power supply and put my LF TX back on line I will make some measurements like voltage across the diodes while TXing,
Thanks to all the team! When I return to LF transmitting I will try to write some DFCW on the new grabber. :) Just waiting a few last parts for the power supply, then I will be QRV with the full 1W E
Hi Chris, It is good to hear you are making such progress with the TS-590. Good job. Apparently my system doesn't need fancy receiver protection. The Softrock was a lucky choice in this respect. :) N
Hi Joe, With one receiver, one transmitter that would be pretty simple... if I fully trusted the T/R signal timing from the transmitter. Neither is entirely true here on LF/MF. The DXE device looks i
I received an overwhelming number of helpful suggestions both on and off the lists. I also received a large number of requests to pass along any solutions found. Thanks to all who responded. Since th
Some good info on the DX Engineering devices... Thanks for an excellent summary, Paul! I have a few additions to your comments on the DXE device, which I've used here on 630M with no problems and wit
Ouch! Having operated on 160m and the HF bands for several years using a receiver that comes in at about -63 dB on 2 kHz spacing third-order IMD I would never again buy something with that kind of re
First, the rest of the story on my RX antenna... Last winter I used a 9m tall "low noise vertical" for receiving: http://blog.n1bug.com/2017/11/21/ It was only about 12m away from the TX antenna. It
Yes, I think I can say quite definitely coupling accounts for most of the higher noise level when the Rx antenna is near the Tx antenna. I see that noise peak and it moves around as I change resonanc
Hi Stefan, Yes, I know. I have a preamp with the short vertical, but unless I put it close to the Tx antenna to get strong coupling between them, I do not have enough noise from the antenna to overco
Hi Stefan, I am not certain we are talking about the same antenna configuration. This antenna is not an E probe, at least not in the sense that I understand it. It's a 9m tall whip with 100:1 impedan
Hello Stefan, thanks Andy and Roelof for input as well. I find myself in a strange, alien world on LF. All my experience at HF, VHF, UHF seems to be no help down here. ;-) In hindsight, the TX > RX a
Hi Roelof, Thanks for the test and interesting information! Since many years I have special interest in "extreme" or very challenging amateur radio QSOs. I have been a 160m DXer, 6m DXer, 2m and 70cm
Hi Stefan, I am, but I feel like a fool asking so many questions and sometimes having difficulty understanding how things work at this part of the electromagnetic spectrum. I understand! I use linux
Hi Stefan, you. I am grateful for your kindness and patience explaining things to me. OK. Understood. Oh, sorry, I created a misunderstanding. I meant 100:1 impedance. It is 80 turns on the antenna s
Thank you Sandy. This is another very interesting data point. Congratulations on your receive results so far and good luck with the transmitting side of things! 73, Paul N1BUG
Hi Stefan, They heard that I am almost ready to come on with full power and they are waiting like cats by a mouse hole... :-) Not really I guess! I got an error message about the page not being able
