"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
>
More information about the Boston-Radio-Interest
mailing list