Transverter: TR 432 H by Khune (20w)
Transceiver Elecraft K3 + P3
PA driver: TV Mosfet pallet (SD56120) in the same cabinet as the PA
PA: TH293 2 Kw
PA: GS35B as back up 1.2 Kw
SDR receiver to monitor the band activity (connected in parallel on the 28Mhz IF): The little giant Perseus
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Same setting for 70cm & 23cm, some manual switching required to change band |
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Capable of delivering about 230W with 15db gain, used to drive the PA with max 160W |
| Thanks to HB9SV that gave me his old 432Mhz cavity together with the tube & grid supply unit i could assembly in a 19" rack my luxury PA wich is able to deliver much more than the declared power. I cannot drive it too much because the home made anode power supply is delivering no more than 4.2kv (instead of 5kv, much more suitable for the tube). In such condition i am using the PA with max 2.5kw out in CW mode and about 1kw in digital so running rather cool and safe> |
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