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Table of Contents
07 : Blog
0 Post(s) for May 2025
Tue 11 July 2023
- started this Radio Diary area today, with a view to using it as a notebook for on-air activity, rather than of recording projects etc.
- Rig : 7200
- Period 1 10:00z
- CQ on 30m / 100W / BVp / 18wpm:
- RBN Spots:
- 10123.3 : MM0ZBH OH6BG SE5E F8DGY TF4M TF3Y ON6ZQ DC8YZ DL9GTB G4IRN DM6EE DL0PF DR4W DL1HWS G4HSO DE1LON OE9GHV OK1FCJ DF2CK SM7IUN MM3NDH HB9BXE SQ5J GI4DOH
- Called by MI0WWB - Will - QRP 5W - RST 549, and deep QSB to nil at times. Short QSO in difficult condx
- Called by DK4AN - Wang - nr Bon - 76 yrs old - QRP 2W/5W. RCh. Nice chat…. sheep / cows / dogs / antenna fields / electric fences etc. QRP → 5W here too. BVc @ 22wpm
- Period 2 1130z
- CQ on 20m / 100W / SKh / 14wpm “CQ FISTS”
- RBN Spots :
- 14058.0 : OH6BG ES2RR SE5E F8DGY G4IRN S53A TF3Y S53WW R1LB OK1FCJ OK4QRO DC8YZ DL0PF RU9CZD DF2CK HA1VHF DR4W OE9GHV IK4VET CT7ANO DL9GTB DM5GG SM7IUN G0KTN W1NT2 G4HSO RK3TD (+ 7 more)
- Called by OK2BWB - Karel - nr Brno. RCh. “home made vacuum tubes trx at 50W see qrz.com for pictures”
- Very deep QSB from S9 → 0 and back at times
- Period 3
- CQ on 30m / 100W / BVp / 18wpm
- Called by SM4ASX - Len. RSt. Swapped to SKh, Started @ 579…. → he ended QSO due to QSB
- Period 3 2100z
- Spent some time practising bug sending, BVp & BVc at 18/20/25/28wpm (28 is still rather too fast!)
- CQ on 60m (5260kHz) 2100z… no reply
- QRN Lightning crashes are fierce tonight!
- CQ on 30m / 100W / BVp / 18wpm
- Called by RW9FZ - Dima - Perm. ~RCh. 56 years old ⇒ Someone YOUNGER than me!
Non-reciprocal Asymmetric HF Propagation
— John Pumford-Green 02/06/23 08:18
On recent 60m QSOs in the early morning with G4VLC / Hereford we've noted a substantial asymmetry in the observed S/N readings on signals in each direction.
Peter's signal arriving here in Shetland has been “good” with S/N of +10dB or more while my signal arriving in Herefordshire has been “poor” with S/N of -10dB or lower.
At other times of day the S/N reports have been more similar, with differences mainly due to different TX powers, but not such a gross discrepancy between the North → South and South → North paths as seen during these morning asymmetrical QSOs.
IC-706
I have acquired an old “Mark 1” Icom IC-706 - ex GM0CXQ (SK)
It required some TLC to bring it back to useful life
- Cleaning - inside and out….
- Power cable (temporary bodge, new cable on order via eBay)
- Microphone (another temporary bodge pending a new eBay microphone)
- Intermittent Receive loss on 6m traced to LPF switching relays - cleaned contacts, fingers crossed it's a long term solution
- MARS Mod to open up transmit to include 60m
public/blog/start.txt · Last modified: 09/03/25 14:54 GMT by john