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My First Question

Ai4i

Ai4i

I might have asked one before but it would have had to have been a long, long time ago.
I am about two-hundred miles from Miami and most Miami stations are covered over by closer ones.
Three Miami frequencies are clear where I am in Sarasota and three Miami stations multiplex with the same amount of power into the same antenna on those frequencies, but...
93.9 is a semi-regular, 107.5 produces a very infrequent burst of Spanish (never ID'd them), and 93.1 is pure, unadulterated hisss.

Why, with no other stations to bother them, are they not fairly equal in receivability? The car radio I am using is very selective with no serious adjacent channel issues.
 
ai4i said:
I might have asked one before but it would have had to have been a long, long time ago.
I am about two-hundred miles from Miami and most Miami stations are covered over by closer ones.
Three Miami frequencies are clear where I am in Sarasota and three Miami stations multiplex with the same amount of power into the same antenna on those frequencies, but...
93.9 is a semi-regular, 107.5 produces a very infrequent burst of Spanish (never ID'd them), and 93.1 is pure, unadulterated hisss.

Why, with no other stations to bother them, are they not fairly equal in receivability? The car radio I am using is very selective with no serious adjacent channel issues.
Click to expand...

I am guessing you've checked to see that they have the same pattern?
 
boombox4 said:
I am guessing you've checked to see that they have the same pattern?
Click to expand...
They mutiplex into the same antenna, are licensed omni-directional and should be nearly identical.
Even if the antenna teats107.5 a littel bit differently, I would still expect 93.1 and 93.9 to be identical.
Perhaps nearby first adjacent channel stations are spewing HD sidebands in there which I do not hear.
We do have strong locals on 92.9, 93.3, and 107.3, but also one on on 94.1.
I would then suspect that the 94.1 is either analog only or has a very low percentage of HD power.
 
Last edited:
I answered my own question.
Must be HD sidebands that I cannot hear.
 
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