[amsat-bb] Re: Another satellite-receiver option

[Howard Kowall]

Good Morning
I was able to download the manual from the manufacture site
not a very good manual,but it does not seem it is full duplex
the manual can be downloaded here
http://www.wouxun.com/down_01.asp

Thanks Again
Howard
VE4ISP
----- Original Message ----- 
From: "Art McBride" <kc6uqh at cox.net>
To: "'Luc Leblanc'" <lucleblanc6 at videotron.ca>; <amsat-bb at amsat.org>
Sent: Wednesday, June 10, 2009 12:32 AM
Subject: [amsat-bb] Re: Another satellite-receiver option


> Luc,
> When using a preamp in any metropolitan area a band pass filter is needed.
> Helicoil types are very good for VHF. DCS makes them or build one out of 
> the
> RSGB Book.
> QFH antennas can be made 1/4 turn to 1 turn, 1/4 wave to 1 wave all with
> different patterns. If done right they are a very effective antenna.
>
> NOAA Tiros N satellites run 5 watts on 137 MHz. On 70 cm AO-51 is 1/2 W 
> and
> you lose 9 dB more for the increase in frequency. You have 3dB less 
> galactic
> noise on 70 cm, and another 3 dB for reduced bandwidth 37 KHz to 16 KHz.
> Doing the math you are comparing 5 watts of (NOAA-18) to .250 effective
> watts on AO-51 adjusted for noise power and frequency. A huge difference!
>
> Art,
> KC6UQH
>
> -----Original Message-----
> From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
> Behalf Of Luc Leblanc
> Sent: Tuesday, June 09, 2009 8:43 AM
> To: amsat-bb at amsat.org
> Subject: [amsat-bb] Re: Another satellite-receiver option
>
>
> I try also  to receive NOAA APT transmission with an helix but i got very
> marginal results even with a preamp for 137khz. The signal was
> better but the pagers QRM was also boosted by about a factor of 5...
>
> The only one viable solution was to use my VHF satellite beam with a PAR
> electronics vhf notch filter part number 5602516. Of course you
> should have a 50khz band pass below that results are also very marginal. I
> don't know if the PCR-100 is able to received at this bandwidth
> but the PCR-1000 can and it can be driven by WXtoimg software.
>
>
> P.S. My home made helix is available for 35$ plus shipping but a bit hard 
> to
> securely fit inside a shipping box. pics available if needed.
>
> On 8 Jun 2009 at 23:14, Jerry Clement wrote:
>
>> I use a Hamtronics R139 Weather fax Receiver with a QFH antenna that I
> built for receving and decoding images from the weather birds such as NOAA
> 18. I never had any luck with any of my other receivers such as my Icom 
> R20,
> being to narrow for this purpose,  although I know of guy's who have
> modified receivers successfully for just this purpose. My set up may be 
> seen
> on my website: www.stormchaser.cjb.net  click on: Quadrifilar Helix 
> Antenna.
> The page needs to be upgraded, as I use a newer laptop than the one shown.
>>
>> Jerry VE6AB
>> www.ve6ab.blogspot.com
>> _______________________________________________
>
>
>
> "-"
>
>
> Luc Leblanc VE2DWE
> Skype VE2DWE
> www.qsl.net/ve2dwe
> WAC BASIC CW PHONE SATELLITE
>
>
>
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