Bert Modderman Engineer

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23cm preamps



Noise figure isnt super at 0.8db but the preamp is very stable.
Power supply via coax cable or external.
0.8db noise figure 15db gain in alu housing 100 euro
0.85db noise figure 15db gain in tin housing 60 euro
0.8db noise figure 30db gain in alu housing 110 euro
0.85db noise figure 30db gain in tin housing 70 euro
dont choose the high gain unless you realy have high cable losses.



backstory:

I was asked to make a 23cm preamp by 2 different ham stations.
Both hams could not receive properly, one owned a Dutch made preamp
and the other a German made preamp, both oscillating like there is no tomorrow.
For them i made a preamp that is unconditionally stable.
Reactions where extremely positive so i decided to put them on sale here.