"Peter H." wrote in message
...


The question is whether there should be a
new NARBA, or whether the gentlemen's agreements continue as they are.


I guess you have little real idea how broadcast allocations actually work.

There are no "gentleman's agreements", but there are treaties, such as
NARBA,
and "Rio".

Plus the U.S.-Mexican Broadcast Agreement and the U.S.-Canadian Broadcast
agreement.

All coordinated through the State Department, not through a "smoke filled"
room.

And this could apply to Cuba as well, if that is Castro's desire.

The Bahamas operates a I-B on 810 khz, a U. S. I-B clear, in addition to
its
I-A clear on 1540 khz. (These are just a few examples).


Bad examples, as there are no more Class I-B stations.

Sorry about the mistake in the classification. However I easily receive
ZNS3, Freeport, Bahamas, on 810 khz day and night from Florida. The
announcer says that the station's power is 10 kw.

All Class Is were merged into Class A by "Rio". All Class IIs and Class
IIIs
were merged into Class B by the same treaty.

There are no Class A (ex-Class I-B) stations in North America on 810
besides
KGO and WGY.

The Bahamas has two stations, a Class A (ex-Class I-A) on 1540, and a
Class C
(ex-Class IV) on 1240.

Those are the two stations serving Nassau. The station on 810 is in
Freeport.

Sorry about the mistake in the classification. However I easily receive ZNS3,
Freeport, Bahamas, on 810 khz day and night from Florida. The announcer says
that the station's power is 10 kw.


ZNS3 isn't in the FCC database, but what else is new.

Even if it was 50 kW, it would be a Class B as the Bahamas has no Class A
priority on 810.

ZNS1 operates 50 kW DA-1 mainly because after "Rio" any Class I-A had to
operate with 50 kW (U.S. and Canada, et. al.) and "at least 50 kW" (Mexico) in
order to retain Class I-A status.

Before, ZNS1 (a Class I-A) operated with 10 kW, and Canada's 1580 Class I-A
also operated with 10 kW.

Class I-Bs and Class I-Ns can be grandfathered at 10 kW , but Class I-As can't
be.

This, not withstanding XERF operating with 10 kW for decades now.

The U.S. isn't going to force the issue with Mexico and demand that XERF
operate with its "notified" 250 kW, simply becuase there is not that much
utility power available in the area, and, anyway, the 250 kW transmitter
doesn't exist anymore.

But, the Bahamas' 1540 and Canada's 1580 were indeed forced to move to 50 kW,
which required both to install directional antennas to protect stations of
lower class in the U.S.

Sorry about the mistake in the classification. However I easily receive ZNS3,
Freeport, Bahamas, on 810 khz day and night from Florida. The announcer says
that the station's power is 10 kw.


ZNS3 isn't in the FCC database, but what else is new.

Even if it was 50 kW, it would be a Class B as the Bahamas has no Class A
priority on 810.

ZNS1 operates 50 kW DA-1 mainly because after "Rio" any Class I-A had to
operate with 50 kW (U.S. and Canada, et. al.) and "at least 50 kW" (Mexico) in
order to retain Class I-A status.

Before, ZNS1 (a Class I-A) operated with 10 kW, and Canada's 1580 Class I-A
also operated with 10 kW.

Class I-Bs and Class I-Ns can be grandfathered at 10 kW , but Class I-As can't
be.

This, not withstanding XERF operating with 10 kW for decades now.

The U.S. isn't going to force the issue with Mexico and demand that XERF
operate with its "notified" 250 kW, simply becuase there is not that much
utility power available in the area, and, anyway, the 250 kW transmitter
doesn't exist anymore.

But, the Bahamas' 1540 and Canada's 1580 were indeed forced to move to 50 kW,
which required both to install directional antennas to protect stations of
lower class in the U.S.

"Peter H." wrote in message
...


This, not withstanding XERF operating with 10 kW for decades now.

Back at 100 kw this year.

The U.S. isn't going to force the issue with Mexico and demand that XERF
operate with its "notified" 250 kW, simply becuase there is not that much
utility power available in the area, and, anyway, the 250 kW transmitter
doesn't exist anymore.

There is plenty of power. There is just no need.

The U.S. isn't going to force the issue with Mexico
and demand that XERF
operate with its "notified" 250 kW, simply becuase
there is not that much
utility power available in the area, and, anyway, the
250 kW transmitter
doesn't exist anymore.

There is plenty of power. There is just no need.


However, the U.S. DID force the issue on one Mexican Class A, in which an
unreasonably and impossibly high efficiency was notified.

In order to achieve the (formerly) notified efficiency, that station would
require a 1,100 foot tall radiator. ELEVEN-HUNDRED feet! The actual radiator
height is about 800 feet.

The newly notified facility purportedly has an 850 foot radiator, but its
efficiency is still too high to be believed, unless the ground system is
intentionally overbuilt.