> 1026 jumper set for maximum gain for the auxiliary antenna (Beverage). It
> makes a significant improvement in the signal level there compared to it
> being switched off.
While the pre-amp will work in some cases, it is primarily designed
for low signal-level noise sensing (small whip or loop) antennas. I
certainly don't recommend buying a 1026 just to get its amplifier,
especially if you plan on using the 1026 on a large antenna.
It's best to avoid poor dynamic range, harmonic distortion, and IMD
performance devices (like low signal level single-ended FET's or
MMIC devices) in pre-amplifiers. I've found MMIC's especially bad
for distortion products. They trade off performance for circuit
simplicity.
The 1025/26 is designed to be a zero-gain device. All amplification
should be ahead of the 1025/26, and hopefully be pass-band
filtered and use good CATV-type bipolar transistors.
73, Tom W8JI
w8ji@contesting.com
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