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ST2NH: FO-29 Transponder with RTL-SDR.
Receiving FO-29 satellite transponder with RTL-SDR.SDRsharp is so simple and so lite software to begin with. http://sdrsharp.com/IMHO its receiver sensitivity is so great compare to other software...
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K0NR (Bob): What’s All This SOTA Stuff?
The Summits On The Air (SOTA) program is seeing increased activity in the US. SOTA represents another one of those crossover activities that combines amateur radio with another activity, in this case...
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9Q1EK (Georges): 144 Mhz Power Amplifier - 8877
W6PO designRobert I. Sutherland, W6PO “High performance 144-Mhz Power amplifier”Reprint of Eimac Amateur Service Newsletter - W6SAI... AS-47 Aug 22, 1971W5UN's webpage1.5 KW output @ 144 MHz.By...
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G4ILO (Julian): No QSOs
I spent all of Saturday monitoring the FreeDV suggested frequencies but so far I haven't heard a thing. I am really surprised. Whenever a new data mode is announced the main problem is usually QRM as...
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EA3AKY (Josep): Virgin Islands qrv 6 m 13-19/March
From March 13 to 19, 2013, look for the following ops to be active from the US Virgin islands: KP2/KI3DNN, KP2/W3JH, KP2/K2JA, KP2/JS6RRR and KP2/NH2KY. QRV on 160 - 6 m, SSB, CW, RTTY, PSK31 &...
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EA3AKY (Josep): E6, Niue, qrv 6 m 22-29/March
Look for Alan VK4WR as E6RQ and Graeme VK4FI as E6SG to be active from Niue between March 22-29, 2013. Focus on 50MHz plus some HF operating. QSL both calls via VK4FI. [Tnx DX World]
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EA3AKY (Josep): HC/RC5A qrv 6 m 5/Feb to 9/March
Elena, RC5A will be QRV as HC2/RC5A from February 5 to March 9. Activity will be on 160 to 6 meters using CW and SSB. This includes being a Single Op/All Band/Low Power entry in the upcoming ARRL DX...
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G3XBM (Roger): Internet Time Servers
For WSPR, and probably quite a few other programmes, it is important to have your PC's clock accurate to within a second or so. With WSPR, if you are more than a few seconds out the software will be...
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J28RO (Freddy): "Faut-il trafiquer salement?"
F5AD a écrit de nombreux articles tant techniques que sur la moralité du trafic OM, dont un qui a retenu encore mon attention tellement cela est drôle mais si réaliste et toujours en vigueur, malgré sa...
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J28RO (Freddy): Couplage de 4 Moxon UHF
Un article pas à pas avec de nombreuses photos, pour réaliser quatre antennes MOXON UHF couplées, par F4FGB... suite
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G3XBM (Roger): 137.5kHz ...it's getting repetitive
Well, I've had the 137.5kHz WSPR2 beacon running for about 18 hours now, almost continuously on a 25% TX cycle. I've tried to drum up reporters by posting on the WSPRnet chat page, RSGB LF Yahoo Group...
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IQ2IR (Insubria Radio Team): EWE MAMA ringrazia i Soci!
There are no translations available."Buon giorno carissimi, sono Giorgio Scarpioni e le vostre mail purtroppo finivano in posta indesiderata e solo stamane cercando di svuotarla me ne sono accorto,...
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AE5X (John): Force 12′s C3 vs C3E: Performance trade-offs
By chapter 5 of my recently-mentioned book on antenna modeling I had enough knowledge to modify an existing EZNEC model of my Yagi to include the additional 10m element I added to it shortly after...
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EA1CS: JD1YBT y JD1BLC, Ogasawara Is.
Estaremos activos desde Ogasawara del 8 de abril al 5 de mayo 2013, en todas las bandas y modos. Ambas estaciones tendrán como Qsl manager JP1IOF para solicitudes directas y también serán confirmadas...
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EA1CS: 7Q7DFC, Malawi
David ( ex W1LBP, WA1LBP, F0AAN en su etapa de estudiante en la Universidad de Normadía en Francia, 7J6CQB desde Okinawa), se encuentra ahora en Malawi, y está activo como 7Q7DFC.En enero David, ha...
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G3XBM (Roger): 137.5kHz WSPR15 tests
Using a very stable external signal generator as my 10.0000MHz LO 5dBm injection, I'm now in a position to try WSPR15 with a stable signal. After a quick frequency check with WSPR2 I propose to switch...
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W2LJ (Larry): The Mail Bag
I received two e-mails, that I'd like to share - the first is from Andreas, IZ3NYT:"Hi dr om,I built a new beacon on 30 meters, I would like your participation, I hope you have fun. receive the signal...
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PD0AC (Hans van Rijsse): “These aren’t the Androids you’re looking for”
Not long ago I downgraded my phone. I still think it was the best decision ever, when taking the specific function of that phone into account. The Acer smartphone I owned before had a terrible battery...
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G3XBM (Roger): First WSPR15 transmission decoded successfully
After a LOT of effort, G8HUH managed to decode my WSPR15 transmission on 137.607kHz at 1815 this evening. Even with a very low (1.7MHz) LO, the drift was still 4Hz in the 15 minute TX period, mainly...
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G3XBM (Roger): Website woes
In the last few days I've done a major overhaul of my main website www.g3xbm.co.uk . All was working fine, but for some reason the web forwarding is not working correctly. Landing on the...
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