Hi Jim,
The AM radio stations are required to do the annual measurements per the
current FCC rules and I have indeed been shown the measurement data at
transmitter sites I have visited. The FCC does not do the measurements,
they just require them to be done and the small stations I have gone to
On 1/6/2023 9:52 PM, Don Kirk wrote:
Broadcasters are held to some very stringent spurious emission limits and
the stations actually go through a periodic inspection to show compliance.
This was certainly true when I worked in broadcasting 60 years ago, but
With deregulation (during the
Hi Frank and gang,
I might be able to help provide some additional insight/direction. This is
not necessarily a case of having to show harmful interference, as the AM
Broadcasters are held to some very stringent spurious emission limits and
the stations actually go through a periodic inspection
Hello AJ,
Topbanders have done an excellent job of precisely identifying the source
of the 1940 kHz intermod.
I don't think its helpful for those of who are not being harmed to lodge
a complaint with the FCC. Its the responsibility of those being
harmed t file a complaint. Those being
Hi Fred,
We've figured out the mystery, now we need to determine if anyone is
being harmed by the weak, intermittent intermod on 1940 kHz
73
Frank
W3LPL
From: "Fred Kleber"
To: "donovanf"
Sent: Friday, January 6, 2023 1:34:04 PM
Subject: Finding Jersey City Top Banders
Hi Frank,
Hi George,
Faulty day/night switches may well be the cause! You may have seen
in my previous email that both stations switch patterns from day to night.
This is the first time I've ever hears of two AM stations with two
antenna arrays sharing the same small site
73
Frank
W3LPL
- Original
On 1/6/2023 12:04 PM, Don Kirk wrote:
and sure enough I see 8 towers at this address using google
earth.
Three towers usually indicates a directional array. Are any of those
stations licensed directional? That could mean either a monster
combining network or violation of someone's license.
Hi Rick and Frank,
This may have already been discussed offline but if WWRU 1660KHz is indeed
one of 2 stations mixing then the math suggests 1380 KHz is a prime
candidate regarding the second transmitter involved in the generation of a
3rd order IMD product that falls on 1940 KHz and it turns
Over the last several days there has been fair to good propagation both to
Europe and the far east. This morning (1/6) worked JA5DQH with good signals
(but QSB) and heard HL5IVL but didn't work. Others on the east coast did. At
sunrise in England worked G3OLB but not his typical strength.
Fred, what made it easy was hearing an English language pop song that I could
easily identify through the fading and static. Switching the VFO to the
broadcast band, I simply scanned until I heard the same song. Confirmed it with
several other songs that nailed it. My Korean is rusty so the
Frank,
1660 +10dB
620 S4
1010 +10dB
1190 S6
> On Jan 6, 2023, at 7:36 AM, Frank W3LPL wrote:
>
> Rick,
>
> If you're hearing more than one audio stream on 1940 kHz
> do you also hear program content from:
>
> 1660 kHz WWRU or
> 620 WSNR
> 1010 WINS
> 1190
Frank,
If a second signal is there, it’s way down. I will say however that the 1940
product is not clean, as a single, weak signal would sound, so it is possible
that another is there. But the abrupt changes in amplitude leads me to believe
that there is an intermittent 1660 transmitter
see below
- Original Message -
From: "Rick Lapp"
To: "topband"
Sent: Friday, January 6, 2023 12:07:50 PM
Subject: Re: Topband: 1940 kHz Intruder
I’m fairly confident that I’ve identified the signal to be coming from 1660
kHz, WWRU in Jersey City NJ. There is considerable fading but I
I’m fairly confident that I’ve identified the signal to be coming from 1660
kHz, WWRU in Jersey City NJ. There is considerable fading but I confirmed the
source by listening to the programming, switching back and forth between two
VFOs on the TS890.
I’m located in Eastern Long Island, NY
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