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
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb