Re: [IRCA] Local 2nd and 3rd Harmonic

["Chuck Hutton" <charlesh3@xxxxxxx>]

My recollection is that harmonics must be down 40 dB from the carrier.
That's .1 Watt for WCTC. You didn't say how strong a signal you are
receiving - if it's very strong it's surely more than .1 Watt and deserves a
mention. If it's a wispy DX level signal, they may be within legal limits
and wouldn't appreciate a false alarm.

If the 40 dB rule has changed since I last had to know these things, I'm
sure one of our broadcast engineers will speak up right away.


Chuck

-----Original Message-----
From: irca-bounces@xxxxxxxxxxxxxxxx [mailto:irca-bounces@xxxxxxxxxxxxxxxx]
On Behalf Of Russ Edmunds
Sent: Sunday, January 21, 2007 6:50 AM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA] Local 2nd and 3rd Harmonic


--- David Hochfelder <xxmugginsxx@xxxxxxxxx> wrote:

> I'm hearing my local on 1450, WCTC, with harmonics on 2900 and 4350. 
> The
> tower is about 5 miles away.  Should I be hearing their harmonics at
> that
> distance?  Would they appreciate a note from me about this, or not?
> 
>

It wouldn't be unusual to hear them at that distance, however if you've
checked those frequencies previously with similar equipment and not
heard them, it might by worthwhile to let them know.

Russ Edmunds
Blue Bell, PA ( 360' ASL )
[15 mi NNW of Philadelphia]
40:08:45N; 75:16:04W, Grid FN20id
<wb2bjh@xxxxxxxxx>
FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15'
AM: Hammarlund HQ-150 & 4' FET air core loop


 
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