June 2011 - AMSAT-BB - mailman.amsat.org

Three towers at NASA launch site
by Andrew Rich 10 Jun '11

10 Jun '11

Does anyone know what the three towers are at the NASA launch sites ? Telem ? Tracking ? Sent from my iPhone Andrew Rich

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SOLD Re: FS: ARR 2M preamp SP144VDG
by Mark L. Hammond 10 Jun '11

10 Jun '11

Hello all, Thanks for your interest. The preamp is sold. 73, Mark N8MH On Fri, Jun 10, 2011 at 10:01 AM, Mark L. Hammond <marklhammond(a)gmail.com> wrote: > Hi All, > > I have a spare ARR SP144VDG 2M preamp that I'm willing to part with > for $80 (shipped, CONUSA). It's in perfect working order and in > good shape cosmetically (inside use only). > > This is the 25 watt RF switched, low noise version. It has BNC > connectors as pictured here; full specs there as well: > http://www.advancedreceiver.com/page7.html > > You'd be amazed at what this will do for AO-7 and VO-52 2M downlinks! > > Price is firm. If you are interested, contact me directly. > > 73, > > -- > Mark L. Hammond [N8MH] > -- Mark L. Hammond [N8MH]

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2M PREAMP
by Gary Lockhart 10 Jun '11

10 Jun '11

Mark, Is it still available? If so I'll take it. How do you want payment? Thanks, Gary AB3ID Snow Hill, MD

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2M1EUB QRV ISLANDS OF HARRIS & LEWIS W.SCOTLAND
by paul robinson 10 Jun '11

10 Jun '11

May be a first for a lot of stations ...new grid sq to be had and rare! ill be qrv from ..the islands of HARRIS AND LEWIS ! (These islands are located off the coast of W.SCOTLAND,)for about 2 weeks,this will depend on rain/wind etc opperating from the van. Most action will be on A07 but may try other birds as well. Ill be also mobile all over N.Scotland AND island of Skye... fun starts 2.JULY.11. up dates on amsat bb & qrz/2M1EUB. NEW QSL CARD TO BE HAD. 73 DE PAUL 2E1EUB

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FS: ARR 2M preamp SP144VDG
by Mark L. Hammond 10 Jun '11

10 Jun '11

Hi All, I have a spare ARR SP144VDG 2M preamp that I'm willing to part with for $80 (shipped, CONUSA). It's in perfect working order and in good shape cosmetically (inside use only). This is the 25 watt RF switched, low noise version. It has BNC connectors as pictured here; full specs there as well: http://www.advancedreceiver.com/page7.html You'd be amazed at what this will do for AO-7 and VO-52 2M downlinks! Price is firm. If you are interested, contact me directly. 73, -- Mark L. Hammond [N8MH]

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Re: SSB Operation on the Satellites
by Joe Krepps 09 Jun '11

09 Jun '11

So for the operator with a single FT-817ND - understanding there will be a learning curve in regards to doppler, doing the "Arrow wave" entertaining and/or frightening the neighbors, is AO-7 do-able or just not a really good idea? Won't be ticked off if the answer is "probably best not to try". Honest! :) I'm guessing it'll take a lot of programming memory channels to stay on track? 73! Joe <-already has MacDoppler Lite and a couple sat. iPhone apps. WB3CFN FM19

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Balloon
by Kevin Deane 09 Jun '11

09 Jun '11

You know here are some people trying to do an experiment of whatever kind, probably spent alot of time and money on the project and I think that is great. I was tracking it and was waiting for it to get above the Sierra's and try to get the downlink. Would have been neat. BUT here we have people saying this and that and complaining... What a bunch of spoil sports, I mean really who cares. Like it was really gonna disrupt the whole APRS system, and if it did for a little while WHO CARES, GIVE THE GUYS A BREAK!!! Anyway, good try guys and am looking forward to another attempt. Kevin KF7MYK

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Re: AO-51 L/U
by Bob- W7LRD 09 Jun '11

09 Jun '11

That was the only place we could play with our L & S stuff since AO-40 (sobsob). 73 Bob W7LRD ----- Original Message ----- From: "Andrew Glasbrenner" <glasbrenner(a)mindspring.com> To: "Louis House, KD5GM" <kd5gm(a)sbcglobal.net> Cc: "<amsat-bb(a)amsat.org>" <amsat-bb(a)amsat.org> Sent: Thursday, June 9, 2011 4:16:52 PM Subject: [amsat-bb] Re: AO-51 L/U With the battery problems we can't use the L receiver. I don't expect to be able to run L/U for a long time, if ever again. 73, Drew KO4MA Sent from my iPhone On Jun 9, 2011, at 6:44 PM, "Louis House, KD5GM" <kd5gm(a)sbcglobal.net> wrote: > In the scheme of things, will AO-51 be in L/U voice mode anytime soon? If so has those UP and Down link frequencies changed? > > Thanks, > LOUIS, KD5GM in EL29kq > CW, The original digital mode > AMSAT #37061: FIST #3606 > _______________________________________________ > Sent via AMSAT-BB(a)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(a)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

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AO-51 L/U
by Louis House, KD5GM 09 Jun '11

09 Jun '11

In the scheme of things, will AO-51 be in L/U voice mode anytime soon? If so has those UP and Down link frequencies changed? Thanks, LOUIS, KD5GM in EL29kq CW, The original digital mode AMSAT #37061: FIST #3606

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SSB Operation on the Satellites
by John Heath 09 Jun '11

09 Jun '11

Hi Satelliters, Might cause some flames with this but here goes: With a good few years of operating on the SSB sats, AO's-10,13,40, RS10, FO-20,FO-29 and 98 countries confirmed I can agree totally with the "one true rule" in theory. When stations at each end of the QSO use the method it works flawlessly, I have done it with QSO partners using Fod track and with Instantrak computer Doppler correction, but there is the problem. Many of the stations that you want to work will be using manual tuning methods, so as you maintain your frequencies at the satellite, according to the rule, your QSO partner will have to search for you. Then when its your turn to transmit he will have to search for you. The practical solution that I and I believe most of the ops. I have worked seem to use is to have short overs and to adjust frequencies the TX to try and keep the QSO in a fixed spot on the receiver. Following the other "often recommended" method of adjusting the higher frequency irrespective of its function, up link or down link, cause QSO's to drift across the pass band causing problems for other users. The other point worth making for newcomers to the SSB birds is to start on the easy passes/satellites first to get the knack of manual tuning. For example, try VO-52 with its 2m downlink, and to pick low elevation passes where the rate of change of frequency due to Doppler shift is less. Don't expect to get it right with near overhead passes of FO-29 until you have delevop your skills. We were all beginners once so don't be afraid to have a go and make a few mistakes. I am pleased to say that in my experience the SSB satellites have a great user community who maintain high operating standard and welcome new ops. Have fun on the birds 73 John G7HIA Lamenting the loss of our lovely HEO birds, Happy Days !!

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