AW: Re. : AW: Re. : AW: [linrad] RE: Linrad and the microwaves

[guenter.koellner@xxxxxxxxxxxxxxxx>]

Hello Dom,

no, it is not only present on 23cm, but on all bands.

Let me think: On terrestrial noise there is a larger amplitude componenent than on space noise. The amplitude component makes filters ringing. CW signs become distorted by this. Can this be what I feel?

73, Günter

> -----Ursprüngliche Nachricht-----
> Von:	DEHAYS Dominique [SMTP:Dominique.DEHAYS@xxxxxxx]
> Gesendet am:	Dienstag, 28. Januar 2003 10:35
> An:	linrad@xxxxxxxxxxxxxxxxxxxxxx
> Betreff:	Re. : AW: Re. : AW: [linrad] RE: Linrad and the microwaves
> 
> this is not what I mean. It is not noise temperature what I mean. I mean 
> that the noise is not noise. Just an example, it may give you an 
> impression what I mean: Have a look at your S-Meter at ground noise, it is 
> toggling much more than on the noise from space. There is AM on the ground 
> noise. Something like this is what I mean.
> 
> 
> Hi Guenter ,
> 
> maybe yes.... We have another problem on 23cm and 13cm , from my previous 
> QTH I suffered from a very severe phase noise problem from nearby GSM 
> towers , on the 23cm terrestrial system I even had to throw away my DJ9BV 
> preamp ( first version with ATF101) because my 23cm system was nothing 
> else than unusable when my antenna was turned to a GSM tower ,as I had 5 
> towers within less than one km radius... I put a special highly selective 
> preamp wich solved the problem . So maybe the noise we get on 23cm 
> terrestrial is not only ground noise .... BTW computers are sometimes 
> annoying me , even on 3cm!
> 
> 73's Dom/F6DRO


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