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Re: [SPAM] Re: Re: [SPAM] Re: AO51 Signals



Thats interesting about the affect of wrong polarisation - 20dB

According to my other info here that is about S4 to S7 difference.




----------------------------------------------------------------------------
Andrew Rich VK4TEC
vk4tec@people.net.au <mailto:vk4tec@people.net.au>
http://www.tech-software.net




-----Original Message-----
From: Andrew Glasbrenner [mailto:glasbrenner@mindspring.com]
Sent: Saturday, 22 December 2007 12:44 AM
To: vk4tec@people.net.au; amsat-bb@amsat.org
Subject: [SPAM] Re: [amsat-bb] Re: [SPAM] Re: AO51 Signals
Importance: Low


AO-51 is LHCP on 435.150, RHCP on 435.300, and linear on 2401.200. If your
helix is LHCP and you are listening to the .300 voice downlink, you are in
the neighborhood of 20db down from a RHCP helix.

73, Drew KO4MA

----- Original Message -----
From: "Andrew Rich" <vk4tec@people.net.au>
To: "Jeff Mock" <jeff@mock.com>; <amsat-bb@amsat.org>
Sent: Friday, December 21, 2007 6:20 AM
Subject: [amsat-bb] Re: [SPAM] Re: AO51 Signals


> Does ao-51 have circular ?
>
> I have LHCP on my antenna
>
>
>
> --------------------------------------------------------------------------
--
> Andrew Rich VK4TEC
> vk4tec@people.net.au <mailto:vk4tec@people.net.au>
> http://www.tech-software.net
>
>
>
>
> -----Original Message-----
> From: Jeff Mock [mailto:jeff@mock.com]
> Sent: Friday, 21 December 2007 9:16 PM
> To: vk4tec@people.net.au; amsat-bb@amsat.org
> Subject: [SPAM] Re: [amsat-bb] AO51 Signals
> Importance: Low
>
>
> The RG-213 loss should be less than 3dB if I remember correctly, I think
> you're okay there.  Did you twist the helix the right direction?
>
> jeff
>
>
> Andrew Rich wrote:
>> Hello
>>
>> I built a 10 turn helix for 435 MHz.
>>
>> I have 15 meters of RG-213.
>>
>> Radio is an ICOM 706 mkii G
>>
>> I am not getting strong signals like I would have expected ?
>>
>> Can someone share their setups and signal strengths ?
>>
>> Maybe a pre-amp might help ?
>>
>> Am I getting too much loss in the cable ?
>>
>>
>> -------------------------------------------------------------------------
-
> --
>> Andrew Rich VK4TEC
>> vk4tec@people.net.au
>> http://www.tech-software.net
>>
>>
>> _______________________________________________
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>
>
> _______________________________________________
> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
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