January 2010 - AMSAT-BB - mailman.amsat.org

KSR 240/LMR-240
by Jack Barbera 24 Jan '10

24 Jan '10

I'd like to point out that the cables may look the same but when tested you may be surprised at the results.Having looked at a number of different cable I have found a big difference in performance. After sweeping the cable over HAM bands the SWR can run from 1.5 up to over 6 to one .Suggest if possible be for installing terminate and test over band to be used. Make sure the load on one end is 50 ohms over that band as test results will only as good as test equipment used.Jack WA1ZDV

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Re: Coaxial line question
by Luc Leblanc 24 Jan '10

24 Jan '10

On 24 Jan 2010 at 11:26, Anthony Monteiro wrote: Date sent: Sun, 24 Jan 2010 11:26:02 -0500 From: Anthony Monteiro <aa2tx(a)comcast.net> Subject: Re: [amsat-bb] Coaxial line question To: Luc Leblanc <lucleblanc6(a)videotron.ca>, amsat-bb(a)amsat.org Copies to: eu-amsat(a)yahoogroups.com > Hi Luc, > > I am assuming you meant 7/8" Heliax. > > 45' of Heliax and a short LMR400 jumper will have around > 0.6 dB of loss on 70cm so that just adds 0.6 dB to > the noise figure of your preamp (i.e. ~1.0 dB to ~1.6 db.) > With even a modest gain antenna, you probably will not be > able to notice any difference on a satellite downlink. > > On 2 meters, even less difference. > > 73, > Tony AA2TX > > --- > Yes 7/8... and i received the same comment on AMSAT-EU forum and placing the preamps closer to the shack will better protect them from the WX issues ice/snow storm and winds plus they will put them away from the RF transmit field who i suspect some desense happen time to time causing also a lot of intermod as i'm at less than 1km from a cellular/pagers/police/fire tower. i can see the tower light beacon from my house window. Thank's "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe DSTAR urcall VE2DWE WAC BASIC CW PHONE SATELLITE

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Re: AO-51 on mode V/U BBS
by marklhammond＠gmail.com 24 Jan '10

24 Jan '10

Hi Enzo, Yes the 1.2 Ghz uplink does work on the BBS. How many watts are at your antenna and what is the antenna gain? I find that 30W at my 20+dB gain antenna is not enough unless the view is clear of any trees. I find the 1.2GHz uplink to be difficult on the BBS so keep trying! Current logs show several users from around the world. JA, VK, OZ, WA stations are some examples. There is no other bird to test with. 73, Mark N8MH ------Original Message------ From: Vincenzo Mone Sender: amsat-bb-bounces(a)amsat.org To: Amsat - BBs Subject: [amsat-bb] AO-51 on mode V/U BBS Sent: Jan 24, 2010 9:31 AM Hi Folks, I am trying the bird on: 9k6 BBS and Telemetry. Does it work? With the MSPE I can just receive numbers like: B:45225614. What does it mean? I am trying to request the DIR on 1268.700 MHz, but I do not get any response. I am asking because I would like to see if my system works. Is there any other Bird that I can use the 1.2 GHz Band? Thanks in advance. 73 de Enzo IK8OZV EasyLog 5 BetaTester EasyLog PDA BetaTester WinBollet BetaTester D.C.I. CheckPoint Regione Campania Skype: ik8ozv8520 *************************************** ***** GSM +39 338 9749786 ***** ***** SMS +39 338 9749786 ***** ***** FAX +39 328 7244294 ***** *** 2nd e-mail: vimone(a)tin.it *** *************************************** _______________________________________________ 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 BlackBerry from T-Mobile

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Re: RF Adaptors
by Randy 24 Jan '10

24 Jan '10

Thanks everyone for all the replies .. I am sure I should be able to find them now .. Got some LMR 400 coax .. Currently using RG8/U ... 50 ft run .. Hoping for better receive on 440.. It came with N type connectors. I tried to find LMR 450 and it seems hard to find .. Thanks again all and see ya on the birds .. :) 73 Randy N2CUA On Sat, 23 Jan 2010 23:01:11 -0500 "Randy" <RSwart1(a)twcny.rr.com> writes: > Does anyone know where I can get > An adaptor that is N-TYPE Male to SO-239 ( FEMALE PL259 ) ?? > > Randy - N2CUA > > > _______________________________________________ > 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 > > ____________________________________________________________ Nutrition Improve your career health. Click now to study nutrition! http://thirdpartyoffers.juno.com/TGL2141/c?cp=SAquJolS3bjEFa18cpur0QAAJ1DpNK nvYEETCm7ZI8wlqju6AAYAAAAAAAAAAAAAAAAAAADNAAAAAAAAAAAAAAAAAAASQwAAAAA=

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AO-51 on mode V/U BBS
by Vincenzo Mone 24 Jan '10

24 Jan '10

Hi Folks, I am trying the bird on: 9k6 BBS and Telemetry. Does it work? With the MSPE I can just receive numbers like: B:45225614. What does it mean? I am trying to request the DIR on 1268.700 MHz, but I do not get any response. I am asking because I would like to see if my system works. Is there any other Bird that I can use the 1.2 GHz Band? Thanks in advance. 73 de Enzo IK8OZV EasyLog 5 BetaTester EasyLog PDA BetaTester WinBollet BetaTester D.C.I. CheckPoint Regione Campania Skype: ik8ozv8520 *************************************** ***** GSM +39 338 9749786 ***** ***** SMS +39 338 9749786 ***** ***** FAX +39 328 7244294 ***** *** 2nd e-mail: vimone(a)tin.it *** ***************************************

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FO-29
by Rowland Archer 24 Jan '10

24 Jan '10

I also heard FO-29 working this morning over FM05 at 1150 -- heard my CW coming back full duplex, but didn't hear anyone else on the bird. Give it a try! 73, Rowland K4XD

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FO29
by PY5LF 24 Jan '10

24 Jan '10

Hello FO29 has passed working over Brazil 11:40 UTC . Good news! 73 PY5LF LUCIANO FABRICIO CURITIBA-PR-BRAZIL GG54JM <http://www.qrz.com/db/py5lf> http://www.qrz.com/db/py5lf <http://www.falautomation.com.br/> www.falautomation.com.br

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Fwd: 910/1.2ghz/sequencer
by Bob- W7LRD 24 Jan '10

24 Jan '10

not takers on my first inquiry. I even sent a note to Icom, they may get back to me someday. I know there are some 910 smarties out there. Hello I am trying to set up my 910/sequencer/amp. Checking things out before hard wiring everything I discovered when grounding pin 3 of the acc socket the radio does go to xmit, and will do cw, however to send ssb the ptt on the mic has to be pushed. At times I use a Heil head set that has no PTT and I simply push the xmit on the radio. Do I have to pick off the PTT at the mic connector? I am probably overlooking something obvious. What do you 910 experts have to say. As always, thankyou 73 Bob W7LRD

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FW: RF Adaptors
by Randy 24 Jan '10

24 Jan '10

Sorry, my bad .. I need a female N-type to female PL259 And also a female N-TYPE to Male PL259 Randy - N2CUA -----Original Message----- From: Randy [mailto:RSwart1@twcny.rr.com] Sent: Saturday, January 23, 2010 11:01 PM To: 'amsat-bb(a)amsat.org' Subject: RF Adaptors Does anyone know where I can get An adaptor that is N-TYPE Male to SO-239 ( FEMALE PL259 ) ?? Randy - N2CUA

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Re: Fwd: 910/1.2ghz/sequencer
by Mark L. Hammond 23 Jan '10

23 Jan '10

Correction...for case 1) below, the transmit audio is pin 4. I was looking at the data jacks! 73, Mark At 04:10 PM 1/23/2010 -0500, Mark L. Hammond wrote: >I don't know if this is applicable or not--but--- > >1) Do you have anything connected to pin 1 of the ACC socket? > >Keep in mind that if the audio level on pin 1 is "too high" the PTT doesn't work. This is readily evident when using a TNC where the audio level is too high; the TNC tries to PTT, but the rig won't key. > >2) A different thought---maybe the microphone audio is muted when the rear ACC socket is keyed. That is common so as to keep from having a "hot mic" when transmitting via a TNC. > > >73, > >Mark N8MH > >At 07:17 AM 1/24/2010 +1100, Tim Tuck wrote: >>Hi Bob, >> >>Pin 3 can not be set to only tx on a specific mode BUT it can be set to >>only tx for a specific band. ( Page 58 of the manual ) I've been right >>throught the service manual and I cant see any way that your rig would >>do what it does. My suspicion is that the CPU has tied itself in knots >>for some reason, thus you might like to do a factory reset of your rig. >>( page 18 or page 77 of the user manual ) >> >>If you do a reset you will loose all your memories and settings. >> >>I know pin 3 works for all modes since I use it with a buxxcom interface >>for FSK441 for meteor scatter on 2m USB >> >>regards >> >>Tim >> >>-- >> >>VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT-VK :: AMSAT > > >Hello > >I am trying to set up my 910/sequencer/amp.Â Checking things out before hard >wiring everything I discovered when grounding pin 3 of the acc socket the radio >does go to xmit, and will do cw, Â however to send ssb the ptt on the mic has >to be pushed.Â At times I use a Heil head set that has no PTT and I simply >push the xmit on the radio.Â Do I have to pick off the PTT at the mic >connector?Â Â I am probably overlooking something obvious.Â What do you 910 >experts have to say. > >As always, thankyou > >73 Bob W7LRD > > > > > >>_______________________________________________ >>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 Mark L. Hammond [N8MH]

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