Hi John,
Is that harmonic generated at the Tx site, or in non-linearities close
to the victim receivers?
Of course, the answer to that question does not affect any
recommendation on frequencies to be avoided on TB, but we should be
careful about blaming broadcasters for every spurious signal
Roger
As Lee KX4TT stated, a harmonic on 1818kHz is a problem for us in southeast
England in the vicinity of the Brookmans Park transmitter for Radio 5 on 909kHz.
73
John G3XHZ
Sent from my iPhone
> On 13 Nov 2018, at 13:24, Roger Kennedy wrote:
>
>
> I have never received ANY harmonics or in
in no gain!
73's
N4IS
JC
-Original Message-
From: Topband On Behalf Of Roger Kennedy
Sent: Tuesday, November 13, 2018 8:25 AM
To: topband@contesting.com
Subject: Topband: Bad Frequencies and Loop Pre-amps
I have never received ANY harmonics or intermod products from any of our
British Mediu
I have never received ANY harmonics or intermod products from any of our
British Medium Wave (AM) broadcast stations. That's at several different
QTHs, some of which were quite near the transmitters. (and never heard of
anyone else having issues)
They have to meet VERY high specs . . . but also
