mal hamilton wrote: Like I have said in the past several times I am surprised how many LF/MF operators have loops strung from tree branches and in amongst trees and claim they are perfect, especially
Hi Johan, What an interesting solution. British airborne radars used 80VAC at 2000Hz to reduce the size and weight of the PSU components, quite a consideration in systems like H2S. Peter, G3LDO since
While testing WSPR I noticed K1JT was 10.140234 at 2148 UTC. (-16dB) Peter, G3LDO Jay, I know K1JT is active on 500kHz RX, but I think Andy had a fair point about other people not setting their WSPR
Many thanks for the report Roman Regards, Peter, G3LDO Looking to your freq too! qrss.nm.ru -> grabber 3 window 500-501.7 3rd window. But SPL... Is not so sensitive then ARGO. But I hope to see you.
David, There is a whole lot of stuff written about determining ERP involving a lot of maths. The most accurate method is to measure the actual field strength. These methods are described in 'LF Today
Over the last couple of weeks have heard a very weak CW signal at 508kHz beaconing BL. Tonight it was a bit stronger and I copied IBL. I am now making a test QRSS transmission on 501.05kHz Peter, G3L
Hi Jay, I will be sending a beacon signal QRSS3 on 501.1kHz until 2330z. I have modified my old PL519 TV sweep tube transmitter which ran about 60 to 70W. It now has two PL519s in parallel running 12
Hello Paul and Jay: Thanks for the reports - I didn't pick a very good evening! However I have reason to believe the antenna and the transmitter are working OK so I will be trying again. Regards Pete
Thanks for the report Ha-Jo 73 Peter, G3LDO Dear all, G3LDO audible 559, some QRN, in eastern Bavaria, JN68GN, on 501,1 kHz in QRSS around 22.40 UTC. Yesterday night I had no time to listen, sri. 73
Thanks for the latest report Ha-jo. I have been working on the antenna ground and got an extra .5amps antenna current since your previous report. regards Peter, G3LDO around 22.20 UTC on October 13th
Hi Clemens, That little program is really brilliant and is just what I wanted. Thank very much and to the others who have replied regarding this subject. Regards Peter, G3LDO the best aid I know is t
Does anyone know of a method of measuring the characteristics (permeability) of ferrite cores? I have a box of these most without any identification although I do have T200, 68-2T and T68-2s whose ch
Hi Roman. 501.05kHz Peter, G3LDO My grabber started on up to finished your activity. qrss.nm.ru -> grabber. Looking to 501.2-501.36 and 502.0 Whats a real freq, Peter? -- Roman RW3ADB.
Congratulations Rik Peter, G3LDO Rik, Well done. I should be in a position to attempt the same as I saw solid QRS signals from Joe. Gary - G4WGT. 2009/11/17 Rik Strobbe <[email protected] <
G3SAQ SK It has been my sad duty to help the Laurie's family dismantle his radio station. His LF radio equipment is for sale and comprises the Decca transmitter, power supplies and an assortment of c
Hello Roelof, I used a similar one for a multiband dipole for the upper HF frequency bands but I don't think they would work for LF. Regards Peter, G3LDO Have you also been looking into the performan
A couple of weeks ago I asked how can one measure the mu of ferrite rings. I received very good information via this reflector for which I would like to thank those who contributed. I was experimenti
Hi Graham. I consider it very good material for antennas. I used it some years ago at Amberley Museum for a large LF antenna for 73kHz and a very large V beam for 21MHz transatlantic TV tests. It als
Is this what you wanted Stefan? Peter, G3LDO I want to start a new subject (for me it's new)... The last weeks I still had RX problems, either with the tx antenna or with the short E-flied RX antenna
