*Hi all*
* *
*For several years I am suffering from internodes carriers spaced 9 KHz
apart on 160m and 80m.*
*On 80m it starts 0n 3501, 3510, 3519 etc, on 160m 1809, 1818, 1827, 1836,
1845, etc. the one on 1845 is very much stronger that the others, *
*Some are S7 and the stronger can be on some RX ANT S9++.*
*The strength of those carriers is affected by changing the RX ANT and TX
ANT.*
*MY TX ANT is 27m tall vertical as Ground plain with 5 elevated radials 27m
long all standing at 16m high roof and the vertical is self support at a
corner of the roof, *
*The ANT tuner is at the base of the ANT switched from the shack 160/80m.*
*My RX Ant's are flag, diamond, slopper, and small magnetic loop, all
mounted on the same 14x14m flat roof.*
*I found that the strength of those IM carriers is lower when my TX ANT is
set on 160m.*
*In the area are two strong broadcast transmitters, one about 3km away with
about 500kw and another in the opposite direction 7km away of 50kw both AM.*
*I HAVE MANY BCB FILTERS inserted on each RX ANT and at the RX input of my
K3.*
*I ALSO HAVE MANY FERRITES-#31- ON ALL FEEDERS AND LINE CABLES.*
*It looks like my TX ANT re-transmit those BC stations.*
*Any idea why this 9Khz spacing, and any suggestions what else can help.*
*I am using also MFJ- 1026 noise canceller which helps a little.*
*Another unknown noise source is only on 160m is spaced 1Khz apart much
lower about 2 S units above the basic white noise of the band, *
*These noise peaks are on every half Khz all over the band say 1820.5,
1821.5, 1822.5 etc.*
*This noise is canceled out quite well with the MFJ. *
*Any idea what can be the source of this noise.*
*I know that most of my problems could be easily solved by moving from this
QTH, but any suggestions for this situation.*
* *
*Thanks*
* *
*73 Ami 4X4DK*
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