23 cm


Preamps

KB2AH preamp with NE32484A - original bias config
KB2AH preamp - with Kapton sleeve
KB2AH preamp - with bias fed through resonator
external view of preamp - bias board outside
modifying the input airline to SMA


TH338 PA - OE9PMJ Cavity
cathode line section
grid line section
cathode tuning & heater connections
building the anode air chamber
blower adaptor mounted
completed RF portion


TH347 PA
Plitsch TH347 cavity used at DL4MUP (courtesy of DL4MEA!)
Thomson TH347 cavity
detail of anode and grid tuning


EME Antennas and Feeds
Diagonal waveguide feed with DJ9BV preamps - Oct 2001 (courtesy of DL4MEA!)
3m mesh dish with DW feed - DL4MEA
transporting 3m and 3.7m solid dishes to G4HUP QTH - July 2002

Septum Plate Circular Polarised Feed




Page created: 16.10.2002 Last updated: 18.10.2002