making a uhf bandpass filter using semi rigid or hardline?
Im trying to build a preamp for the 902-928 band, I bought several
surplus cellular preamps
in a auction, these had 824-855mhz ceramic filters. I took the filter
out and the noise floor
took off, i need to replace the bandpass with one in the 902-928 mhz
range. I have some
semi rigid coax .080 and of various sizes of small hardline .250 -
..540. In the past ive seem articles on making preamps & filters using
semi rigid coax but cant find any now that im ready to start building a
ATV receiver.
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