Getting the most from your G4DDK VLNA - NTMS

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And the results At least for 23cm
Noise figure bandwidth Noise figure bandwidth Noise figure (dB) 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 1000 1100 1200 1300 1400 1500 Frequency (MHz) VLNA2 VLNA1
Page 1 and 2: Getting the most from your G4DDK VL
Page 3 and 4: WD5AGO 23cm pre-amp
Page 5 and 6: 23cm VLNA
Page 7 and 8: Gain results for 23cm VLNA 1 Gain s
Page 9 and 10: Initial attempts to improve perform
Page 11 and 12: How’s s that Unfortunately, not u
Page 13 and 14: Source, drain and L1/L2 for 23cm VL
Page 15 and 16: Tune up • Set bias as described i
Page 17 and 18: Improvement in performance - Noise
Page 19: And • Replacing R3 (51R) with a 3
Page 23 and 24: 13cm VLNA2 • Improved noise figur
Page 25 and 26: 13cm VLNA2 Position of L1 and L2 fo
Page 27 and 28: 13cm VLNA2 Gain spread 13cm VLNA2 g
Page 29: Thank you! More information @ WWW.G

Getting the most from your G4DDK VLNA - NTMS

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