"Boston's Real Jazz" WZBR 1410 on air

Dan.Strassberg dan.strassberg@att.net
Tue Dec 24 10:37:32 EST 2013

When operated at 1200 kHz or above and a ground system that consists of 120 
1/4-wavelength ground radials, 75' Valcom whips are supposed to meet FCC 
efficiency requirements (inverse-distance field of 281.4 mV/m/kW) for 
standard AM radiators. I have a feeling, however, that that prediction may 
be a bit optimisitic. WZBR's horrible signal up here in Arlington Heights 
has been blamed on anomalous ground conditions, but I don't believe that, 
along the radials that point this way (roughly true north, IIRC), the signal 
comes close to the specified ID field.

Dan Strassberg (dan.strassberg@att.net)
eFax 1-707-215-6367

----- Original Message ----- 
From: "Dale H. Cook" <radiotest@plymouthcolony.net>
To: <boston-radio-interest@lists.bostonradio.org>
Sent: Tuesday, December 24, 2013 7:57 AM
Subject: Re: "Boston's Real Jazz" WZBR 1410 on air

> At 04:50 AM 12/24/2013, Sean Smyth wrote:
>>How efficient/effective are longwire antennas vs. standard towers at the 
>>same frequency/power level?
> Not very, which is why the Commission allows them for STAs only.
> Dale H. Cook, Contract Engineer, Roanoke/Lynchburg, VA
> http://plymouthcolony.net/starcityeng/index.html

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