Explain to me how can KNX-AM be heard in Florida when WAPI occupies 1070 in AL

[davideduardo]

I actually live in Norcal but I saw a Youtube Vid claiming that KNX can be in Florida. I can Hear KNX from Vallejo because The signal bounces from the KNX transmitter to Ozone Layer to Vallejo.
I also heard of a claim that KNX can be heard from the Philippines and China one time but I doubt it because They must have a station on 1070 AM over there.

I know of several people who have reported hearing KNX in Australia & the Fiji Islands.

Western Hemisphere stations are quite easy catches for DXers in NZ, Austrialia and surrounding areas since SE Asia and Australia are on 9 kHz channel intervals, meaning that there is nothing local or regional in all but about a dozen frequencies.

 

[Mediafrog+]

Western Hemisphere stations are quite easy catches for DXers in NZ, Austrialia and surrounding areas since SE Asia and Australia are on 9 kHz channel intervals, meaning that there is nothing local or regional in all but about a dozen frequencies.

And, of course, it works both ways. Many Eastern Hemisphere AM stations make it to North America, as those 9 kHz channels are unoccupied here!

A number of Latin American stations used to operate on split frequencies, such as 655, 675, and 725, allowing good reception at great distances (Radio Reloj in San Jose, Costa Rica on 725 was one of several I recall hearing.) Decades ago Costa Rica even had 25 kHz channel separation, so every other frequency allotment was a split.

 

[davideduardo]

A number of Latin American stations used to operate on split frequencies, such as 655, 675, and 725, allowing good reception at great distances (Radio Reloj in San Jose, Costa Rica on 725 was one of several I recall hearing.) Decades ago Costa Rica even had 25 kHz channel separation, so every other frequency allotment was a split.

I owned a station on 805 in Quito, and despite being just 1 kw, it got lots of reception reports from all over the US, Scandinavia, and New Zealand and Australia. I eventually moved it to 810 (without permission, of course) and we quit getting those reports... the reply to one of which is at:

http://www.davidgleason.com/Archive Quito Scans/Radio Musical Verification Letter copy.pdf

 

[Tom Wells]

Another good reason this is possible is because with a loop antenna a very sharp null is at 90 degrees to the desired
front-n-back pickup. Aim the null at Alabama, with the broadside pickup of the antenna aimed west, will
give you KNX. In a case like this, rejection of the unwanted" station can make a lot of difference.

 

[lauu]

I spent most of the 90's answering QSL requests at KNX. The vast majority were from the Scandanavian countrys. Most used a long wire antenna, several thousand feet long streched out over the forest. The die hards would spend most of their vacations as far North as they could get to avoid the local QRM. Reports from the orient, Australia, and the pacific islands were not that uncommon.

 

[SDRadio]

I lived on Okinawa for some time thanks to the U.S. Navy. KFI, KNX, KGO, KOA, and KSL were regular catches in the winter. Asia has 9 kHz frequencies, so 640, 1070, 810, 850, and 1160 were in the holes.

There was a VOA station in the Phillipines that broadcasted at 1143 AM that had many watts -- some say a million. I could get in in the daytime in Naha, Okinawa.

 

[Mediafrog+]

There was a VOA station in the Phillipines that broadcasted at 1143 AM that had many watts -- some say a million. I could get in in the daytime in Naha, Okinawa.

Yes, the VOA Philippines transmitter was/is 1,000,000 watts, supposedly directional towards China/Vietnam.

Okinawa itself had a megawatt VOA transmitter on 1178 in the 50's/60's, directed at China.

 

[ronkaram]

I wasn't aware that David could pick up all these stations in Cleveland as I never could in Akron. The longest one I remember was in the early 50's around 6-7 PM during the winter I picked up a station in Akron from London around 1600. David metioned 1420. That was WHK color channel 14 color radio.

 

[radioman148]

I lived on Okinawa for some time thanks to the U.S. Navy. KFI, KNX, KGO, KOA, and KSL were regular catches in the winter. Asia has 9 kHz frequencies, so 640, 1070, 810, 850, and 1160 were in the holes.

There was a VOA station in the Phillipines that broadcasted at 1143 AM that had many watts -- some say a million. I could get in in the daytime in Naha, Okinawa.

Around what years did this happen?

 

[Mediafrog+]

I lived on Okinawa for some time thanks to the U.S. Navy. KFI, KNX, KGO, KOA, and KSL were regular catches in the winter. Asia has 9 kHz frequencies, so 640, 1070, 810, 850, and 1160 were in the holes.

There was a VOA station in the Phillipines that broadcasted at 1143 AM that had many watts -- some say a million. I could get in in the daytime in Naha, Okinawa.

Around what years did this happen?

The Megawatt VOA transmitter in the Philippines hit the air in the 1950's and is still on. It has also used 1170 in recent years.

The VOA Okinawa Megawatt transmitter on 1178 was on from the early 1950's to the early 1970's. It was shut down when the island was returned to Japan, around 1972, IIRC. The station was often heard in Europe, underneath the co-channel Swedish transmitter used for the Radio Sweden European service.

 

[radioman148]

I lived on Okinawa for some time thanks to the U.S. Navy. KFI, KNX, KGO, KOA, and KSL were regular catches in the winter. Asia has 9 kHz frequencies, so 640, 1070, 810, 850, and 1160 were in the holes.

There was a VOA station in the Phillipines that broadcasted at 1143 AM that had many watts -- some say a million. I could get in in the daytime in Naha, Okinawa.

Around what years did this happen?

The Megawatt VOA transmitter in the Philippines hit the air in the 1950's and is still on. It has also used 1170 in recent years.

The VOA Okinawa Megawatt transmitter on 1178 was on from the early 1950's to the early 1970's. It was shut down when the island was returned to Japan, around 1972, IIRC. The station was often heard in Europe, underneath the co-channel Swedish transmitter used for the Radio Sweden European service.

Thanks!