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Some useful notes on the Baofeng/Wouxun cheapie handhelds, but the rest of this is also quite interesting, particularly the repairs to test equipment. (I need to keep an eye out for one of those HP spectrum analysers...)
Satellitenwelt - Transit 5B-5 der wahrscheinlich älteste aktive Satellit
Launched in 1964, and still happily transmitting telemetry.
to history radio retrotech satellite vhf ... on 23 March 2015
Whistable-based radio enthusiast. The section on his LF gear is interesting -- using an audio amplifier as a PA.
BBC RD - Publications - White Paper 132 : Dipole Antennas
Excellent overview of dipoles and variations thereof (folded dipoles, cones, discones, etc.).
to antenna dipole electronics hf radio vhf ... on 08 March 2013
40m to 6m transverter with 2W output using only common parts. Very neat.
to 6m electronics radio transverter vhf ... on 30 March 2012
Welcome to the PA3CSG website!
Big RF amplifiers with cheap Russian valves, and serious filters for them.
to amateur amplifier electronics hf radio rf valve vhf ... on 27 February 2012
Detailed bandplans that include PMR stuff. (And, um, a lot of more dubious rubbish.)
Notable for the bit on slot antennas. (The three-band J-pole-with-slots combo is pretty neat, although I'm not entirely sure I'd want it on the roof!)
Several SSB/DSB transceivers. The 2m one is pretty cool.
to electronics radio receiver transmitter vhf ... on 25 June 2011
« earlier | later » Page 1 of 3
| - vhf | |
| 1 | 4m |
| 3 | 6m |
| 6 | amateur |
| 1 | amplifier |
| 4 | antenna |
| 1 | atv |
| 2 | baofeng |
| 1 | cb |
| 1 | digimodes |
| 1 | dipole |
| 10 | electronics |
| 1 | eme |
| 4 | ham |
| 5 | hf |
| 1 | history |
| 1 | lf |
| 4 | microwave |
| 1 | qrp |
| 20 | radio |
| 1 | receiver |
| 1 | retrotech |
| 1 | rf |
| 1 | satellite |
| 1 | shopping |
| 1 | surplus |
| 2 | test-equipment |
| 1 | transmitter |
| 1 | transverter |
| 1 | tuner |
| 1 | tv |
| 8 | uhf |
| 1 | uv5r |
| 1 | valve |
| 20 | vhf |
| 1 | wouxun |
tasty by Adam Sampson.