Hi Rob it sounds like you must have a loss resistance in excess of 100ohms, it you can only get an amp with 90W. Unlike Top Band, putting ground rods under the vertical doesnt help much at LF. Most (
Thanks Alan and others for the useful comments. My main problem is obstacles when lying out earth radials.. animals, vehicles and tarmac are a problem in the yard here! Ideally i should move the ante
Excellent conds on 137 in a range of 2500km! Signals show up in RN, 4X, TF, YO at good strength. Worth to try! 73, Stefan/DK7FC Stefan.. vy good tonight again too, you're 579 here.. best I've heard y
My TX is now working all be it fairly QRP 90W ;-) Antenna is 53m horizontal at ~9m high.. a droopy 'T' single strand copper all the way. I'm also receiving on this antenna too with much better result
Hi Rob, Thanks for the report. Oh yes, looking forward to see you on the band (or hear?). What will you use as the TX antenna? 73, Stefan/DK7FC PS: Conds (local) are excellent again this evening! Wor
Hi Rob, But that sounds like a good progress anyway! Are there many trees? Do you use the mains earth too? Can you get the wire a bit higher? I would like to see a trace of you so if you like and it
Good guide lines Alan I would add , try a top loading coil at the end of the vertical section , that seems to increase the amps in the vertical , I found using a U shaped top wire, one end of the U c
Hi Rob, Am 27.01.2012 21:28, schrieb Rob, M0DTS: Ok I'l TX shortly on .710 QRSS 60 full call. Better try between 136.168...136.176 kHz. There, all the spectrograms are running in QRSS-60 mode. You wi
Rob, You might well find it useful to build an RF ammeter and (if you have an oscilloscope) a Scope Match. See Chapter 10 of the Radio Communications Handbook. I have had the same problems with earth
Hi Stefan, At the moment, the wire is tuned on 507.77 kHz but will be QRV on 2200 again for a sked soon! 73 Joe PS: Joe/VO1NA, will you transmit tonite? After working RN3AGC and DL7SAQ, a 3rd QSO wou
Hi Graham yes another good, well tested approach and good if you cant get the feed pont away from buildings.....it reduces the voltage on the vertical portion. I was rabbitting on so much I had to dr
I think Gary is running Opera on 136 , that should give you a direct dB change ? My TX is now working all be it fairly QRP 90W ;-) Antenna is 53m horizontal at ~9m high.. a droopy 'T' single strand c
Ok I'l TX shortly on .710 QRSS 60 full call. Antenna is up with three fibreglass poles so at full height for now, might try to get centre/vertical up to 12m. All the local trees are 50+ meters away b
PS: Joe/VO1NA, will you transmit tonite? After working RN3AGC and DL7SAQ, a 3rd QSO would be fine. All good things are 3 :-) 73, Stefan Am 26.01.2012 00:28, schrieb Stefan Schäfer: LF, Excellent cond
