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2320 Mhz: 3.7m dish f/d 0.4, VE4MA feed, G4DDK preamp <0.3dB NF and SSPA 6 x MRF21120 with watercooling
TX: 2320 Mhz / RX: 2284 - 2350 Mhz / RX: 2368 - 2452 Mhz
Yaesu FT847 + XRef - 10 MHz-Locked Reference Oscillator + DB6NT transverter 10MHz GPS locked + microHam CW micro Keyer II
Screenshot 13cm echoes with Dgrd - 2.4 dB: PA with 6 x MRF21120 * NEW PA * 3dB more power gives a very good improvement on my echoes !!
Screenshot 13cm echoes with Dgrd - 2.4 dB: PA with 3 x MRF21120
1 modified PA with 3 x MRF21120 + WATERCOOLING
Watercooling parts for 2 PA's made by Bert, PE1RKI
Watercooled PA with 2 times 3 x MRF21120. Input and Output with ratrace couplers by RF Hamdesign. You see the PA in TEST configuration
INPUT
OUTPUT
Water temp. meter
Radiator watercooling
28V DC
Dir. Coupler
PA 2
PA 1
New G4DDK 13cm Preamp, measured in Heelweg The Netherlands 19th Jan. 2013 : NF = 0.27dB and G = 28,6dB (Made in Veendam by Jan, PA3FXB)
measured in Örebro Sweden 15th May 2013 : NF = 0.33dB and G = 28,3dB
A very nice recording made by Bruce, PY2BS of SSB QSO between LX1DB and PA3DZL on 13cm made 16-06-2013