I know it has been mentioned that the TIS JFK stations on 1700 where WRCR will be moving to will have to leave the air. I was wondering have these TIS stations been notified already or do they wait for the station to sign on 1700 before leaving the air ? How long do they wait before leaving the air ? Besides 1700 there are also TIS stations on 1690 and 1710.
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WRCR 1700 TIS Stations Question
- Thread starter xmradiopro
- Start date
Someone please verify this.
I did not know that 1710 was/is within the standard broadcast band.
1700kHz is the uppermost frequency for AM broadcasting. 1710kHz is the limit of the upper sideband of a station which operates at 1700kHz.
The standard AM band in the U.S. is 540 to 1700. But I thought some Travelers Information Stations (TIS) operate at 530 and 1710, since I believe most modern radios can receive those signals. So I suppose the JFK TIS can relocate to 1710 or someplace else.
And the Toronto area of Canada does have a station at 530. CIAO Brampton, 250 watts around the clock, in Italian and some other languages. But because 530 is so empty, you can sometimes pick it up at night around the Northeast U.S. and Eastern Canada.
And the Toronto area of Canada does have a station at 530. CIAO Brampton, 250 watts around the clock, in Italian and some other languages. But because 530 is so empty, you can sometimes pick it up at night around the Northeast U.S. and Eastern Canada.
The question I really was asking is how long does the TIS station wait before they eave the air before WRCR signs on at 1700 with 10,000 Watts ?
I wonder if the TIS at JFK will even have to go off. It is located outside the 0.5 mV/m day signal of the new facility.
Remember that 10,000 watts at 1700 is roughly the equivalent of around 150 watts at 540 on the dialy. It does not go very far, and travels even less once it hits the horrible ground conductivity of LI.
I was told any TIS station on the same frequency will have to leave the air for a regular broadcast station so my guess is yes but who decides when this will happen ?
WRCR is actually in the coverae map area of the TIS station...I was told any TIS station on the same frequency will have to leave the air for a regular broadcast station so my guess is yes but who decides when this will happen ?
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.
You can see coverage Map South Queens is there near JFK listed as Howard Beach...
http://www.wrcr.com/wp-content/uploads/WRCR-DAYTIME-COVERAGE-MAP-10242014.pdf
http://www.wrcr.com/wp-content/uploads/WRCR-DAYTIME-COVERAGE-MAP-10242014.pdf
I am not familiar with that.
What I do see is that the 0.5 mV/m contour of a B, C or D class station is the extent of the daytime protected contour. The predicted coverage of WRCR does not extend to JFK. The JFK 1710 barely makes it to the airport property limits.
Those are theoretical contours prior to going on the air, and very obviously don't take into account the real ground conductivity of Long Island.
In any case, my point is that there is not necessarily signal overlap. TIS stations are limited to a 3 km (about 1.5 miles) radius of their transmitter. So it may well be that the two can coexist, or perhaps the Port Authority can rely only on the 1630 kHz facility they also have licensed.
It could also be that the Port Authority is going to wait until 1700 is on long enough to do field strength readings which might support leaving 1700 on the air.
Well the tower is being completed starting this Monday so tests should begin on 1700 very soon.
I found this file report online fore TIS stations interfetting with WRCR 1700...it appears they are already aware of this as they filed the letteer with the FCC. However I wasn't able to read the letter as it seems not to be readable in my browser.
https://www.fcc.gov/article/doc-332745a2
https://www.fcc.gov/article/doc-332745a2
Not only are they aware of the issue, WRCR gave the New Jersey operation consent to continue operation, although at the time of writing that letter was not on file at the FCC.
This is not the same TIS station as the one at JFK. This is the one regarding the NJ operation in Hudson Country.
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.
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.
1710 carrier wise is NOT inside the BC MW band...only the audio sidebands is...but NO carrier there...
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