AM was weak on the 1966 Bendix-mopar AM/FM.
Re-set and confirmed ground to coax at fender.
Seemed OK. Went to work today near WBBM/WGN and I could tell the RF input circuit was way off.
WLS was WLS upper sideband, but WGN on lower sidband! Lotsa whistles and squeals on everybody.
Antenna opened up at base on center lead, measured 2 meg, detuned RF input by 720 -890 -- 170 khz!
WBBM also showed up at 950, so this was worrying me....
I was seriously thinking I had something go wrong in the alignment, but I am happy since I had a direct replacement
in use as my air monitor antenna. I swapped them, and the air monitor doesn't care whether there is or isn't 2 meg inline.
I don't remember running that antenna into anything, and it's the first "failure" of an antenna on that car in 30 years.
New antenna is smokin hot on AM and it is far more peaky and effective when tweaking the trimmer cap than the old antenna.
If I'm not fixing something for pay, I'm fixing something for free.
Re-set and confirmed ground to coax at fender.
Seemed OK. Went to work today near WBBM/WGN and I could tell the RF input circuit was way off.
WLS was WLS upper sideband, but WGN on lower sidband! Lotsa whistles and squeals on everybody.
Antenna opened up at base on center lead, measured 2 meg, detuned RF input by 720 -890 -- 170 khz!
WBBM also showed up at 950, so this was worrying me....
I was seriously thinking I had something go wrong in the alignment, but I am happy since I had a direct replacement
in use as my air monitor antenna. I swapped them, and the air monitor doesn't care whether there is or isn't 2 meg inline.
I don't remember running that antenna into anything, and it's the first "failure" of an antenna on that car in 30 years.
New antenna is smokin hot on AM and it is far more peaky and effective when tweaking the trimmer cap than the old antenna.
If I'm not fixing something for pay, I'm fixing something for free.