Are you talking about the software published by DL4YHF (http://www.qsl.net/dl4yhf/ ) ? He did a waterfall/spectrum and a receiver from "DC" to 22.5KHz. 73 Marcus PY3CRX/PY2PLL S. B. do Campo - GG66rf
I have some signal at 136.500,02 ... is any activity there? Which mode? normal speed morse ? Running a 30m high monopole, 100Hz IF filter + Spectran ... quiet sky ... Or any other signal at 21:20 UTC
Hi Alan ... Hi Marcus, I have not much experience with ferrite rods, but the article in Electronics World for August 2002 (mentioned in an earlier posting) does evaluate various rod configurations fo
Hi Johan ... I don't know how much better Litz can do in your case but the winding length is also important for efficiency. If I remember correctly, best efficiency (power transfer) is achieved when
Hi Rick et al ... NIL here too ... The same here. I kept the snapshots anyway to look with more care ... The problem between ZL<>PY is that 05:30 UTC means 02:30 local time here ... and sunrise is cl
Hi ... Iīll be running Jason at 21089.800 from 14:00UTC to 20:00 UTC. Text is PY2PLL GG66RF Measured Power: 12.5mW (Elektrisk Bureau EM100 exciter - 400Khz to 30MHz, 50mW + 6dB in-line attenuator) An
Hi James . . . It seems to me this is quite a large loop, and will generate a large output: Yes, itīs large ... at least the bigest one I ever did. And itīs a prototype. Iīm using PVC covered wire ..
Hi ... After read an article last year (Wireless World) about loop antennas X DCF39 calibration, I constructed a octogonal RX loop, #16 awg wire, to cover from 400KHz to 1.6MHz. Thereīs 9 turns, 5mm
Hi ... Does anybody have or uses an EKV 13 receiver (from RFT, DDR)??? It covers from 14KHz to 30MHz, with diversity antenna switch and RTTY/FSK demodulator built in. Seven IF BW from 150Hz to 6KHz.
Hi James ... I would like a copy. Actually Iīm building a 1 meter diameter mag loop, 100 meter of wire on it, but using the theory adopted by Mr Marco Bruno (www.vlf.it) ... where a loop drives a cur
Iīll watch/recording 135.922 +/- 5Hz tonight too. Yesterday NIL. Summertime here, despite of good N/S propagation last night (several VLF utilities from US, Europe, Hawaii, Aurstralia, etc ... log be
Hi Andy ... Yes, I can ... was very noisy anyway but I spent too much time setting Spectran to enhance the effect on screen and forgot record a sample audio file :o( 73 Marcus, PY3CRX/PY2PLL GG66rf h
Hi there ... Yesterday night (03:00 UTC more or less) some new signals on 21.1. Thereīs two files, one of them is the 3rd audio sample of the morse transmition (may 26th) at http://py.qsl.br/fskmorse
Hi there ... Now itīs 21:22 utc and I set up receiver / calibration to make an overnight record here. Is there any known activitie that could I monitor ? 73 Marcus PY3CRX/PY2PLL
Well, I left argo snaping shot overnight, centered at 137.7750. I first calibrated it using the 153KHz BC carrier / 60KHz time stations as reference. I donīt know if 153K is accurate enough but the f
Thanks Laurence. I parked at 137.7750 but only got something that looks like a signal at 137.7776 ... noisy night. Loop was beaming 315° which means NA center. 73 Marcus, PY3CRX/PY2PLL -- Original Me
My great friend Larry Kayser, VA3LK, of many years in AMSAT, QRP, and a great lover of using low to the ground yagi's for ground enhancement on EME has passed away suddenly with a heart attack. Larr
Hi there ... I went to SAQ pages and thereīs a message telling that the jan 19th test changed to Feb 2nd. Is this ok ? I used an online translator but who knows ... 73 Marcus PY3CRX/PY2PLL -- Origina