[RFI] 9Khz spacing of intermodes carriers interference

[Cortland Richmond]

An IMD calculator at 
http://www.arcticpeak.com/radiopages/intermodulationproducts.htm shows
Radio Mevaser Tov at 774 AM and  Reshet Alef at 1458 AM with a 7th order 
IMD prduct on 3510 KHz.

Are these your two neighbors?

Cortland
KA5S


On 1/20/2013 1405, AMI SHAMI wrote:
> *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.*
>