[amsat-bb] Re: 145 MHz signal blocking 435 MHz downlink

[Jim Jerzycke]

Hi, Paul

I use that antenna as my "Field Day" antenna, as it's much easier to 
transport.

At home I use an M2 2M7 and a 420-450-11 with SSB preamps.

73, Jim  KQ6EA


On 01/19/2014 11:21 PM, Paul wrote:
> Hello Jim,
>
> Do you still use the GulfAlpha 'Easy Sat' antenna?
> I'm looking for any advice on improving performance.
> I have already installed the diplexer as shown in the article below but it
> seems I'm getting no good signal on the 70cm uplink.
>
> Paul Delaney - K6HR
> http://k6hr.dyndns.org:8080
>   
>   
> -----Original Message-----
> From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
> Behalf Of Jim Jerzycke
> Sent: Sunday, January 19, 2014 11:09 AM
> To: amsat-bb at amsat.org
> Subject: [amsat-bb] Re: 145 MHz signal blocking 435 MHz downlink
>
> Buy a diplexer, and connect it as shown in the linked article:
>
>
> http://www.amsat.org/amsat-new/articles/Mode-J/
>
> I also tilt both of my Yagis so they're 45* to the boom, which makes
> them 90* to each other.
>
> Yes, I lose some signal on terrestrial use, but ti helped cut the
> coupling, and desense, down quite a bit.
>
> 73, Jim  KQ6EA
>
> On 01/19/2014 06:56 PM, Gabriel - EA6VQ wrote:
>> Hi all,
>>
>> I have a coupling problem in my station when trying to work FO-29.  My 2m
>> signal is completely blocking the 435 MHz downlink, and so I can't hear my
>> signal off the satellite. I guess it must be something related to the
>> distance between the two yagis. (I use the terrestrial horizontal yagis
> you
>> can see at http://www.dxmaps.com/jm19hn.html ). With mode-B satellites
> there
>> is no problem.  I have tried it with two different 435 receivers, and it's
>> exactly the same.
>>
>> Anyone has had this problem o have an idea of the possible reason?  And
> what
>> is more important, of some way to solve it?
>>
>> Thanks for any possible help.
>>
>> 73. Gabriel - EA6VQ
>> _________________________________________________________
>> Web-Site: HTTP://www.dxmaps.com
>> VQLog 3.1 (build 78): HTTP://www.vqlog.com
>> _________________________________________________________
>>
>>
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