Sam G4DDK (DXing)
g4ddk.bsky.social
Sam G4DDK (DXing)
@g4ddk.bsky.social
Retired. Telecoms background. Radio ham. Mostly 6m to 24GHz.
EME, VHF DX chasing. Equipment development
I have a Casio programmable that I bought off G4HUP in about 1978, when he was upgrading. I recall I paid him £25 for it. That was a lot in those days!
We were both GPO/Post Office Telephones radio school instructors. Many ex radio staff benefitted from numbers on this calculator! Still my 'go to'.
August 29, 2025 at 11:09 AM
This week’s project is working with my newly acquired RFZero to create a replacement 24GHz beacon for Martlesham (or Felixstowe).
June 18, 2025 at 6:19 PM
Sat on Brighton sea front, drinking coffee and waiting for my daughter to complete the London to Brighton cycle ride ( For the British Heart Foundation).
June 15, 2025 at 11:15 AM
Looks like I should keep the 23cm EME feed in the dish for several more days as G4RFR may be QRV on Wednesday.
April 27, 2025 at 12:36 PM
Showing how marginal it was, it took three days to work HD8G on 23cm EME. As the moon moved closer, so degradation came down just enough to complete. My thanks to Bruce for persevering.
April 26, 2025 at 12:23 PM
13cm EME QSO with DL3WDG today. Used Q65 60C initially, followed by 30B. The faster 30B was about 1dB worse on our QSO.
March 4, 2025 at 10:18 PM
And a CW QSO today with G3LTF on 13cm EME. Last worked on 13cm EME in 2009!
March 3, 2025 at 7:03 PM
Two new # on 13cm EME yesterday. Third failed half way through (report but no Rs or 73)due to QSO partner equipment fault.
More tests today.
March 3, 2025 at 11:29 AM
WSJT-X echo mode on 13cm quite good, but at -17dB (JT Echo) just audible on headphones.
March 1, 2025 at 1:04 PM
Joined by the second one. More friendly but also still a bit nervous of humans.
Bobby and Phylis, ‘The Railway Children’. They were rescued from near the main railway line!
March 1, 2025 at 11:29 AM
One of our two rescue cats. This one still extremely nervous of human contact. Whatever happened to him?
March 1, 2025 at 11:14 AM
My 13cm EME feed and VLNA back in the dish. Excellent echoes this morning. 250W (in shack) and 0.3dB nf.
Looking to increase my 13cm # count next weekend.
March 1, 2025 at 11:08 AM
200W to OK1DFC septum polariser feed and VLNA23 preamp. 2.3m dish.
January 14, 2025 at 10:10 PM
Good 23cm EME echoes this evening. Trying 1298.100 MHz to see how well the system works at the higher frequency. I noticed a few more people on the HB9Q chat also mentioning doing test transmission/QSOs at what might become the new, preferred, 23cm EME allocation.
January 14, 2025 at 10:09 PM
Getting ready for the Dutch Heelweg microwave meeting next Saturday. This annual meeting brings together microwavers from several European countries, for a day of measurements, trading and serious discussion on matters microwave!
January 12, 2025 at 9:04 AM
lol
December 6, 2024 at 2:40 PM
I’ve been playing low noise, low gain, very high dynamic range 23cm preamps today.
November 27, 2024 at 4:35 PM
I have just spent some time with G4JMM, measuring his (new to him) 10GHz portable transverter. All working well. I really must get my own (replacement) 10GHz transverter working.
November 23, 2024 at 3:51 PM