October 2006 - AMSAT-BB - mailman.amsat.org

WiSP DDE interface
by Andrew T. Flowers, K0SM 24 Oct '06

24 Oct '06

This one is for the programmers out there--can anyone tell me what DDE serivce, topic, and item to monitor for rotor and radio control in WiSP? I understand the data format is the same as SatPC32. -Andy K0SM/2

1 0

L/S helix feed
by Joe Leikhim 24 Oct '06

24 Oct '06

Bob; I don't think the larger reflector will hurt S-band feed although the larger reflector will create some additional blind spot for the dish. This may not be a problem depending on the gain required. Could you share pictures or drawings of the concentric feed? I am very interested in all options for multiband dish feeds. Message: 3 Date: Mon, 23 Oct 2006 23:46:52 +0000 From: w7lrd(a)comcast.net Subject: [amsat-bb] L/S helix feed To: amsat-bb(a)amsat.org Message-ID: <102320062346.26698.453D546C00022FD80000684A22058861720B9D04C999(a)comcast.net> Content-Type: text/plain Hello Questions on my current L/S helix feed. I am building a dual L/S concentric helix feed for a 48x54 inch primestar dish. The reflector is cut for L band does that cause a problem with S band? Where can I find a good design for a notch filter for S band to reduce desense? Where does the focal point want to be on the helicies? Or is it pretty forgiving. Any other information is appreciated. 73 Bob W7LRD Seattle -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Treason doth never prosper: what's the reason? For if it prosper, none dare call it treason." "Follow The Money" ;-P

1 0

L/S helix feed
by w7lrd＠comcast.net 24 Oct '06

24 Oct '06

Hello Questions on my current L/S helix feed. I am building a dual L/S concentric helix feed for a 48x54 inch primestar dish. The reflector is cut for L band does that cause a problem with S band? Where can I find a good design for a notch filter for S band to reduce desense? Where does the focal point want to be on the helicies? Or is it pretty forgiving. Any other information is appreciated. 73 Bob W7LRD Seattle

3 2

Re: L/S helix feed
by Grant Hodgson 24 Oct '06

24 Oct '06

Charlie G3WDG has designed a dual, concentric helix feed and microstrip filters to reduce the de-sens to very low levels; details are on his website :- http://www.g3wdg.free-online.co.uk/dual.htm regards Grant G8UBN

1 0

Is TH-D7AG the only widely available full-duplex HT??
by John Mock KD6PAG 24 Oct '06

24 Oct '06

I was trying to help out another ham get started with satellites, and just checked the on-line HRO catalog. They no longer list the Icom W32A, only its accessories. Does that mean that the TH-D7A[G] is the only HT being made today which works well on FM satellites??? Are there other vendors besides HRO to check? -- KD6PAG (Networking Old-Timer, Satellite QRPer) [Note: If i'm in your address book, please replace 'qsl.net' with 'amsat.org'. I never send unsolicited binary attachments, and so if you receive anything purportedly from <kd6pag(a)qsl.net> that isn't signed with my callsign, then it probably isn't from me. There's a new worm/virus out there that appears to be sending infected messages with addresses it finds in their hosts' address books. If you getting strange 'failed mail' messages, that's what going on.]

8 8

AO-51 this evening over Europe
by OZ1MY 23 Oct '06

23 Oct '06

Hello in Europe, This evening there seems to be persons trying to block the satellite with interesting tones ! Please do not do that. I hope those of you who might know who is doing that will approach the person to make it stop. 73 OZ1MY Ib

1 0

Re: SatWarn 1.0
by Wayne Estes 23 Oct '06

23 Oct '06

Gabriel EA6VQ wrote: I have made, mainly for my own use, a small program that communicates via DDE with the excellent DK1TB's SatPC32 satellite tracking program and gives a voice warning when a satellite rises above the horizon. Wayne W9AE replies: A voice AOS announcement feature will be in SatPC32 v12.6, planned to be released in November. Wayne Estes W9AE Oakland, Oregon, USA, CN83ik

1 0

SatWarn 1.0
by Gabriel - EA6VQ 23 Oct '06

23 Oct '06

I have made, mainly for my own use, a small program that communicates via DDE with the excellent DK1TB's SatPC32 satellite tracking program and gives a voice warning when a satellite rises above the horizon. In case someone is interested you can download it from http://www.vhfdx.net/satwarn.html 73. Gabriel - EA6VQ ===================================================== Web-Site: HTTP://www.vhfdx.net VQLog: HTTP://www.vqlog.com Realtime QSO maps: HTTP://www.vhfdx.net/spots/map.php =====================================================

2 1

Looking for info on a SHF Systems BS2400
by am25544 23 Oct '06

23 Oct '06

Hello All, Does anyone have any info on a S-band downconveter made by SHF Systems model BS 2400? Thanks in advance. Armando, N8IGJ

1 0

Re: OSCAR-11 Heard
by Mineo Wakita 23 Oct '06

23 Oct '06

Hello Douglas, Thank you for your detailed analysis of my wav file. I arranged and posted it on my HP: http://www.ne.jp/asahi/hamradio/je9pel/uo11dec3.htm Thank you. --------------------------------------------- Name: Mineo Wakita / JE9PEL, JAMSAT member Mail: ei7m-wkt(a)asahi-net.or.jp URL : http://www.ne.jp/asahi/hamradio/je9pel/ QTH : Yokohama Japan, GL:pm95tj Date: Oct 22, 2006 ---------------------------------------------

2 1