The DJ9YW 4.47m Dish

Dish Diameter: 4.47m, Homemade
f/D = 0.47
Gain = 33.0 dBi ( -3 dB at 4.0 degrees )
Mesh = 12.7 * 12.7 * 0.7 mm, Loss 0.12 dB
Weight: Dish + Feed = 83 kg
Support: Al Lift Tower
Feed: W2IMU long version
PA: 8 * 2C39BA, gain 133 dB, efficiency 40 %
Transmit Cable: 7/8 " aircom plus, loss 1.68 dB
Power at Feed: 360 W, ERP 438 kW
Tranceiver: TS680 or IC756 at 28 MHz
Transverter: Notune
Preamp: FHX335-ATF 10136, VP 33 dB
Preamp relay: loss 0.07 dB
NF: 0.48 DB ( feed to audio )
Sun Noise: ( SF 70 ) 13.8 dB
M17 Noise ( 76K ) at 175 degrees AZ and 22 degrees EL: 0.9 - 1.4 dB
50 ohm to cold Sky: 5.6 dB
Echo's: 7 - 8 S/N in 200 Hz BW audio filter (JPS NIR12 , GD84NF)
Rotor: FRC EPR 203 Autotracking

For skeds Fax: 49 5155 983256

---

Comments: Rein, W6/PA0ZN

---

Return

---