April 2008 - AMSAT-BB - mailman.amsat.org

GB5OSO Qsl cards
by Robert Turlington 15 Apr '08

15 Apr '08

HiAll can any one confirm if they have received there GB5OSO Qsl card via the bureau yet. I had a note from one station that he had not received his in a recent batch from his bureau,thanksRegards Robert G8ATE _________________________________________________________________ Win 100’s of Virgin Experience days with BigSnapSearch.com http://www.bigsnapsearch.com

1 0

AO-51 L-band off for ~24 hours
by Andrew Glasbrenner 14 Apr '08

14 Apr '08

The L-band uplink to the AO-51 bulletin board will be off for ~24 hours or so for some testing. Sorry for any inconvenience. 73, Drew KO4MA

1 0

GO-32 Uplink
by James Denneny 14 Apr '08

14 Apr '08

I have had recent problem with GO-32 BBS uplink on 145850. Uplinks on 145900 and 145930 are working well. Anyone else notice a problem with 145850? Jim K7EG

1 0

Re: Suggested mode S antennas for K5GNA downconverter
by w7lrd＠comcast.net 14 Apr '08

14 Apr '08

Lest we not a forget a fairly short helix 5-10 turns. Would probably be good enough for AO-51. Depending on ones construction methods, it could be fragile. They are easy to build and fairly "forgiving" 73 Bob W7LRD -- "if this were easy, everyone would be doing it" -------------- Original message -------------- From: "Robert Bruninga" <bruninga(a)usna.edu> > > I am trying to come up with a portable sat > > station that can fit in a briefcase. I have the > > dipole and reflector antenna that K5GNA sells for > > his downconverter but I am looking for something > > compact that can fit in the briefcase and the > > reflector cant. > > See my foldable S-Band 1 meter dish Portable: > http://www.ew.usna.edu/~bruninga/ao40ant.html > > You can make it out of simple aluminum roof flashing. > > Bob, Wb4APR > > _______________________________________________ > 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

1 0

Re: SWR meter on 910H??
by George Henry 14 Apr '08

14 Apr '08

-----Original Message----- >From: w0dxz(a)aol.com >Sent: Apr 14, 2008 9:02 AM >To: amsat-bb(a)amsat.org >Subject: [amsat-bb] SWR meter on 910H?? > >I know this sounds? question idiotic, but,,, sometimes you just have to admit you can't solve a problem, and ask for help. > >I cannot figure out how to measure SWR with my IC-910H... does it not have an internal SWR meter? I'm using external meters. I can't believe you can't measure SWR with this rig. > >Help... >Bob W0DXZ DM33 >_______________________________________________ The 910H does not have a built-in SWR meter. Does ANY rig that can provide preamp power over the coax have one? Personally, I have never found an internal SWR meter to be as convenient to use, nor as accurate as, an external meter. 73, George, KA3HSW

2 1

SWR meter on 910H??
by w0dxz＠aol.com 14 Apr '08

14 Apr '08

I know this sounds? question idiotic, but,,, sometimes you just have to admit you can't solve a problem, and ask for help. I cannot figure out how to measure SWR with my IC-910H... does it not have an internal SWR meter? I'm using external meters. I can't believe you can't measure SWR with this rig. Help... Bob W0DXZ DM33

2 2

2x6 elements DK7ZB and polarization switch finished
by Henk, PA3GUO 14 Apr '08

14 Apr '08

Hello ! Just want to share with you some results of the past months: In November I built an DK7ZB 2x6 elements beam for 145MHz: http://home.vianetworks.nl/users/hamoen/pa3guo/dk7zb.html This website contains why and how I created this antenna. Lots of pictures of the construction details are included. Also it includes a bunch of measurements (SWR, Impedance). By now this has become my main 2 meter antenna. This month I finally finished the polarization switch: http://home.vianetworks.nl/users/hamoen/pa3guo/polarizer.html Suggested by Rob, PE1ITR, I re-used a design by SM5BSZ. Now I can select either horizontal, vertical, RCHP or LHCP. With the 2x6 elements in 'X' position this is a great solution. Also here detailed measurements, with help of the miniVNA of Rob. Especially for LEOs with fast changing polarization and deep QSB circular polarization is comfortable. Please let me know if any questions ! 73, Henk http://www.qsl.net/pa3guo

1 0

Re: Suggested mode S antennas for K5GNA downconverter
by Ronald Nutter 14 Apr '08

14 Apr '08

Sorry I should have been a little more specific. I have some travelling coming up and am trying to come up with a combination of equipment that will fit in a Pelican 1490 case that should be able to go through airport security with a minimum of hassle. Ron KA4KYI Jim Wright wrote: > Would a larger briefcase/toolbox help? A metallic tool box may be what you need to mount it all to and serve as its transport, also. > > Just a thought. > > 73, > Jim WA4IVM > > > > From: Ronald Nutter <rnutter(a)networkref.com> > Date: 2008/04/13 Sun PM 06:02:40 CDT > To: amsat-bb(a)AMSAT.Org > Subject: [amsat-bb] Suggested mode S antennas for K5GNA downconverter > > I am trying to come up with a portable sat station that can fit in a > briefcase. I have the dipole and reflector antenna that K5GNA sells for > his downconverter but I am looking for something compact that can fit in > the briefcase and the reflector cant. I have thought about the G3RUH > patch antenna but that is a little pricey for me at this point. Are > there any other antennas that someone can suggest that I try for this > quest ? > > Thanks, > Ron > KA4KYI > _______________________________________________ > 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 > >

1 0

AO-51, GO-32 APRS new address
by Mineo Wakita 14 Apr '08

14 Apr '08

Hi Steve K4HG, The 'www1' of new page, not 'www': http://www1.findu.com/cgi-bin/pcsat.cgi?absolute=1 is working very nice for ao51, go32, pcsat. Thank you.

1 0

swr-antenna question
by w0dxz＠aol.com 14 Apr '08

14 Apr '08

Finally got my satellite antenna system set up, using with my IC-910H. Works well on 144mhz, good PO, good SWR.? But on 432,,, I have good PO but NO reading on the SWR meter. As I tune up and down the band, PO goes up and down, as I get? near or far from resonant freq.? Power Out goes up and down as I tune up and down the band, but I get NO reading on the SWR meter.? Using an older CushCraft 416TB, circular right, I think. I expected either a good SWR reading,? (hopefully) or a bad reading, but I get NO SWR reading. My only thought is how it is wired, for R circular. I am hesitant to run much power until I determine the SWR. Any ideas as to why I get NO SWR rreading on 432 antnna? Seems to hear OK, I can hear local repeaters, etc. Not sure what is going on. The meter is good, I checked that, SWR reads OK on another? radio/antenna. Bob W0DXZ DM33 Sun City AZ

2 1