WRCR 1700 TIS Stations Question

[ContinuousWave]

Since the tower is just a modification of an existing "member" of the 1300 operation's directional array, I can't see the "completion" taking more than a few hours. It appears to be just a shortening of the tower to remove the requirement for lighting.

thought the lat/long of the 1300 and 1700 sites were different....

 

[davideduardo]

thought the lat/long of the 1300 and 1700 sites were different....

The coordinates on the CP and the 1300 license are the same, and somewhere I recall reading that one tower was being shortened for the 1700 operation. As I checked and read that report when the change was first reported, things may have changed.

 

[davideduardo]

Wouldn't leaving the TIS station on the air cause interference by WRCR's 10,000 Watts ? I don't see how they could the TIS station can stay on the air on 1700.

10,000 watts on 1700 is very little power. Consider that 1 kw on 550 covers about the same as 50 kw on 1500 and you can see that. Roughly, those 10 kw will cover less than 150 watts would at the bottom of the dial.

The coverage map you posted shows the 0.5 mV/m contour and the 1.0 mV/m one, which are both useless for actual listener reception. In noisy urban areas, the 5 mV/m contour is pretty much the limit of "listenable" AM reception. In the denser parts of metros, 10 mV/m is needed to overcome noise levels.

 

[xmradiopro]

WRCR was testing last night on 1700 AM from 1000 watts to 10,000 watts with carrier nd audio transmissions. It seems that the TIS station is still on the air as of today which was causing lots of interference last night during the WRCR 1700 tests.
WRCR is aware of this conflict and is working on having the JFK TIS station moved to another frequency or leave the air by their attorney but will not happen until they sign on 1700 on July 4th the day they hope to launch the new 1700.
Does anyone know how to get in touch with the local JFK TIS station ?

It's the other way around. The TIS station has the lowest priority, and has to leave the air if a licensed standard broadcast station come on the air, raises power or changes pattern and becomes entitled to protection in the area the TIS operates.

I'd have to see a more precise coverage map that takes into account the conductivity at the shoreline, but it is entirely possible that WRCR has no protected coverage in the immediate vicinity of KFK. If the TIS station uses leaky coax to radiate, and they don't overlap WRCR then they could be safe. B,C and D class AM stations are protected to the 0.5 contour daytime, and the map I have shows no overlap at JFK.