Big ear in Moskow! ;-) I confirm. IQ2MI/B JN45NL QTH: Milano ARI Milano Radio Club ERP unknown, the antenna is tuned for the old frequency 501 kHz! 73 de Claudio IK2PII -- Claudio Pozzi - rispondere
We are testing a new transmitter after the MOSFET death, but we have some problem with the keyer. May be 1 or 2 weeks. Of course! We are building the CW/QRSS/DFCW keyer with Arduino. And the exiter s
We can set any frequency, resolution is 0.1 Hz; what is your preference? Claudio ik2pii -- Claudio Pozzi - rispondere a [email protected] -- Z-Light e Z-Pro: servizi zimbra per caselle con dominio em
My old dream! Brain waves DX on 136 kHz. This is wireless! ;-) Claudio ik2pii -- Claudio Pozzi - rispondere a [email protected] -- ZE-Light e ZE-Pro: servizi zimbra per caselle con dominio email.it,
Hi Mike. I don't know Opera but this is my 2 bit "guesswork" ;-) Does the Deep Search decision making algorithm compute a confidence numerical score? If not can compute it? So, normalize the score be
You should say "20m short coax cable" ;-) = 0.032 wavelength! In my opinion if the cable is shorter than 0.1 wavelength and low loss VSWR doesn't matter. 73 de Claudio IK2PII -- Claudio Pozzi - risp
Here my report about VLF (<24 kHz) propagation during the eclipse. http://ik2pii.altervista.org/Eclissi/Eclissi_en.htm 73 de Claudio IK2PII -- ZE-Light e ZE-Pro: servizi zimbra per caselle con domini
What happens if someone flood the internet 'deep search' channel wit a lot of fake callsign etc etc? Can someone test this flood? 73 de Claudio IK2PII -- Claudio Pozzi - rispondere a [email protected]
Hi Stefan this remember me a "CERN style" balun attached! I suggest you a QSY near Geneva ;-) 73 de Claudio ik2pii -- Claudio Pozzi - rispondere a [email protected] -- ZE-Light e ZE-Pro: servizi zim
... an hardware powerful tool: https://en.wikipedia.org/wiki/Thiotimoline ;-) 73 Claudio ik2pii -- ZE-Light e ZE-Pro: servizi zimbra per caselle con dominio email.it, per tutti i dettagli Clicca qui
Prad = i^2 * 1579 ohm * (h / lambda)^2 My 2 dB contribute: h in meters (or ft) lambda in meters (or ft) so (h / lambda) is dimensionless scaling factor confirmed by P = i^2 * R Or not? 73 Claudio ik2
For sharp spikes coming out from the cable I suggest some ferrite bead or a VK200 choke on the receiver input. I believe they have no attenuation at LF frequency. 73 de Claudio ik2pii -- Claudio Poz
The distance is about 3 billion km, say 10000 seconds light. Round trip time twice. Send K, sleep 5.5 hour ... and the antenna is in shadow side... Tx here and Rx over the pound! Claudio ik2pii -- Z
HI Stefan I suggest neon sign transformer https://en.wikipedia.org/wiki/Neon-sign_transformer 15 kV and 50 mA at 50-60 Hz but I don't know what happen at 3 kHz. 73 de Claudio ik2pii -- ZE-Light e ZE-
The AC 230 power supply in the shack and the desktop computer grounding wire are equipotential, share the same grounding system? 73 de Claudio ik2pii -- ZE-Light e ZE-Pro: servizi zimbra per caselle
May be a crazy idea... but the atmosphere refractive index (and light speed and wavelength) change a little with pressure, temperature and humidity. 50 uHz at 3 kHz are 1.7e-8 so may be you can dete
http://www.navy-radio.com/manuals/0101-1xx/0101_113-02.pdf 73 de Claudio IK2PII -- ZE-Light e ZE-Pro: servizi zimbra per caselle con dominio email.it, per tutti i dettagli clicca qui Sponsor: Caselle
Your circuit is a magnetic amplifier. This book is useful. https://archive.org/details/MagneticAmplifiers 73 Claudio ik2pii -- ZE-Light e ZE-Pro: servizi zimbra per caselle con dominio email.it, per
Some idea for the transformer... May be that a small toroidal transformer core for mainline power supply can be useful for 2 and 6 kHz bands. But toroid are without transformer air gap. A core from
