[NLRS] Deafness on 6M

Sun, 5 Jan 2003 17:20:45 -0600

Hi Bryan,

I think two resons.   First channel 2 puts out white noise from 49.5 to 52.5
MHz.   that is down -70 db from the carrier but still plenty of signal.
The second is over load from the vedio signal.    I use a filtter that in in
the  arrl handboo.  It allows me to work 6 meters.    I still cannot do much
in the direction of the channel 2 so about the 90 degrees from north to east
I cannot work anyone.   That kept me from working Europe this last year.

Another solution is to vertically polarize your 6 meter antenna.   Chuck did
that and was able to work stations when pointing at channel 2.

Just a few thoughts.

73  Bob  W�AUS

----- Original Message -----
From: "Bryan LaPlante" <[email protected]>
To: "Nlrs posting (E-mail)" <[email protected]>
Sent: Sunday, January 05, 2003 4:36 PM
Subject: [NLRS] Deafness on 6M

> Thanks to the group for helping me accurately measure my local noise
issues,
> it is better now.
>
> However, I find my station is still plenty deaf.
>
> The station -
> 6 M 3ele yagi, horizontal
> TE systems brick
> Timewave ANC4 noise canceller
> Ten-Tec 1209 Transverter 6M->2M
> 2M rig Kenwood TR751a
>
> at 50.750 MHz, I can pick up Channel 2 audio at S9+30+ if the Timewave is
> off.
> with it on, it's down to S9+20
>
> I can't run the pre-amp on the TE brick - you just get overload.
>
> Puzzles:
> 1) why do I get channel 2 at 50.75, when it should be at 59.xxx MHz?
> partial answer - because I can also hear it on the HF rig at 9 MHz FM -
> solid, but not showing much of an S-level.
> Now, why on earth do I have it at 9MHz?
>
> 2) Is the reason I'm deaf because of local stations overloading me?
>
> 3) The Ten-Tec has only a 7 db or so NF - while other transverters have a
1
> db NF.  Is this a big deal on 6M?
>
> Solutions?
> Do I need a cavity on 6M?
> Tuned stub for 59MHz?
>
> 73's - bryan kb0obt
>
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