15 years ago I was used to buy truckloads of test and communication equipment from Johns Radio in Bradford (now he is in Batley). He had a lot of equipment from the closure of STC R&D labs. I acquire
You are so kind. Thank you very much. My tubes look exactly like 4B/551B(D). I will measure the dimensions to be sure as soon as I can. It looks convenient that the filament voltage is the usual 6.3
The 'dawn chorus' recorded this morning at Todmorden, 05:39 to 05:53. http://78.46.38.217/au170423a.mp3 15 minutes, mono 64 kbps, 6.4 Mbytes. https://en.wikipedia.org/wiki/Dawn_chorus_(electromagnet
many thanks vy73 Marco DD7PC Easy, it is the organ of the RSGB. You get it by subscribing to RSGB, like you get QST by subscribing to ARRL. Marco IK1ODO
... - Writing a good article makes A LOT of work - you could easily do another project rather than write an article. (and your fellow hams might call you at 10 p.m. or 6 a.m. if their kit is not wor
At 22.00 09/03/2008, Wolf wrote: Hello Roland, Copied your PSK08 transmission in JO42FD, using an SDR-IQ on an untuned HF dipole. ... In PSK31, no decode, the signal barely visible on the spectrogram
Hi Wolf, I just set up a signal generator (HP 8643A) at QRL (100m from QTH) radiating an AM-modulated 10148 kHz PSK08 signal, modulated at 80% by a 1kHz tone, so that I have two good sidebands at 101
At 13.17 10/03/2008, you wrote: Hello Marco Thank you for the interesting report. Generally I got much better reports with PSK08. PSK08 had been received almost error free. To my Station: PC, Softwar
A small magnetic loop mounted vertically has a defined radiation resistance that is a function of its diameter, a loss that is function of its conductor and hence a loss or efficiency that is the rat
CT1DRP will be transmitting on 136320.5Hz using DFCW10 with 0.2 shift. I am hoping to survey the field strength to confirm the ERP. If the frequency is interfering with anything ongoing please let me
At 08.11 08/11/2008, you wrote: Thank you Marco. I hope to be driving around the countryside today and tomorrow provided the weather obliges. I will publish the value as soon as I have something conc
Hi Markus, hi group! Thank you Marcus for mentioning the "Luxemburg effect". Yes I had a rough idea that its somekind of cross modulation in the ionosphere, when a strong signal is present. Now I wa
Hi Marco! Thank you very much for providing my bedtime sweets tonight :) Dennis dl6nvc ;-) 73 - Marco IK1ODO / AI4YF (on RSGB_LF_GROUP since 1998 - is there a diplom for 10 years of list subscriptio
Hello, who is in DFCW around 136.307 - 136.308? I see DF6NM vy strong at .309, and RA3YO with a weak signal and QSB at 136311.2 - 136311.3 Hz. RA3YO uses long intervals between dots... a very long me