[amsat-bb] Using Predict with a dynamic qth file

2011-02-18 Thread Bobby Lacey
Hi, Is it possible to dynamically change predict's qth file from a socket connection? Looking to develop a small web app that gives updates on pass times depending on your current geolocation. 73 Bobby KF4GTA ___ Sent via AMSAT-BB@amsat.org. Opinions ex

[amsat-bb] QST Article on ARISSat-1 Available

2011-02-18 Thread Clint Bradford
David Jordan AA4KN's excellent article on working ARISSat-1 that was published in the February, 2011 issue of QST magazine is available for download to all. http://tinyurl.com/work-arissat1 It is a 1.1MB .pdf document. Clint Bradford, K6LCS (Permission received from the ARRL to publish.) _

[amsat-bb] Yaesu 847 power supply -linear vs. switching

2011-02-18 Thread zach hillerson
I purchased a Yaesu 847 for both satellite and HF work.  Since this is my 1st base-style transceiver I am now in need of a power supply.  I was originally considering the Astron RS35M and am curious if linear or  switching is the proper choice?  Is there a Amsat BB favorite between switching and

[amsat-bb] Re: Yaesu 847 power supply -linear vs. switching

2011-02-18 Thread Nigel Gunn G8IFF/W8IFF
My preference is for big linear supplies but perhaps I'm just an old fogey that prefers traditional design. On 18-Feb-11 18:44, zach hillerson wrote: > I purchased a Yaesu 847 for both satellite and HF work. Since this is my 1st > base-style transceiver I am now in need of a power supply. I wa

[amsat-bb] News regarding HO-68?

2011-02-18 Thread PE0SAT
Hi, Thanks for reading this message. Is there any news regarding HO-68? Or can somebody give us a link where we can find this information? 73 Jan - PE0SAT -- With regards PE0SAT Internet web-page http://www.ham.vgnet.nl/ ___ Sent via AMSAT-BB@amsa

[amsat-bb] Linear vs. switching and HV DC

2011-02-18 Thread Bob Bruninga
> Is there a Amsat BB favorite between switching and linear [power supplies]? I won't speak to noise, which is the only potential issue with switching power supplies, but other than that, I am writing an article for QST that points out how the world of power and emergency power has changed drastic

[amsat-bb] Re: Linear vs. switching and HV DC

2011-02-18 Thread Dee
Only thing I have to say is that Switching types are much lighter and are more transportable. I have owned big bruiser linears and they work OK-just find a sturdy shelf to put them on. If your requirement is 25Amps, get a 35Amp unit.(switching) Best to run cooler than at "load." Good luck on the

[amsat-bb] Re: Linear vs. switching and HV DC

2011-02-18 Thread Edward R. Cole
At 10:54 AM 2/18/2011, Bob Bruninga wrote: > > Is there a Amsat BB favorite between switching and linear [power >supplies]? > >I won't speak to noise, which is the only potential issue with switching >power supplies, but other than that, I am writing an article for QST that >points out how the worl

[amsat-bb] Re: Using Predict with a dynamic qth file

2011-02-18 Thread Charles Suprin
Howdy, I do not recall predict having that capability. If they do, it would be great to see how they handle doppler of a moving qth. In gpredict we are adding gpsd support and would like the example. Charles AA1VS On Feb 18, 2011 12:47 PM, "Bobby Lacey" wrote: > Hi, > > Is it possible to dynamic

[amsat-bb] Re: Linear vs. switching and HV DC

2011-02-18 Thread Vince Fiscus, KB7ADL
At 12:01 PM 2/18/2011 -0900, "Edward R. Cole" wrote: >I am rebuilding my 4.2kV PS for the 2m-8877. That'll get you into AO-51. ;-) >I was 14 years old when working on my DX-35 with 850vdc on the 6146 plate. > >I agree that many hams these days aren't not trained to handle >high-voltage with a

[amsat-bb] Office Closed

2011-02-18 Thread Martha
The AMSAT office will be closed on Monday, February 21 for observance of Presidents' Day. -- 73- Martha ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite progra

[amsat-bb] Re: Yaesu 847 power supply -linear vs. switching

2011-02-18 Thread tosca005
On Feb 18 2011, zach hillerson wrote: I purchased a Yaesu 847 for both satellite and HF work.  Since this is my 1st base-style transceiver I am now in need of a power supply.  I was originally considering the Astron RS35M and am curious if linear or  switching is the proper choice?  Is there a

[amsat-bb] WD9EWK on FO29 @ 2331 UTC today

2011-02-18 Thread Patrick STODDARD
Hi! I will do one more demonstration today from the Yuma AZ hamfest on FO29 at 2331 UTC today. If you are on that pass, please feel free to call WD9EWK on there. 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ ___ Sent via AMSAT-BB@amsat.org. Opin

[amsat-bb] Re: Linear vs. switching and HV DC

2011-02-18 Thread Edward R. Cole
At 12:26 PM 2/18/2011, Vince Fiscus, KB7ADL wrote: >At 12:01 PM 2/18/2011 -0900, "Edward R. Cole" wrote: > >I am rebuilding my 4.2kV PS for the 2m-8877. > > >That'll get you into AO-51. ;-) Not me! I'm not getting the blame for melting the AO-51 receiver. > >I was 14 years old when working o

[amsat-bb] Arrisat-1

2011-02-18 Thread Kevin Deane
I have been slackin, did they put it out or is it still postponed??? Kevin KF7MYK ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amate

[amsat-bb] ND9M/MM - AO7 Ops from RL89

2011-02-18 Thread Clary, James T, Civilian
I expect to be QRV on AO7 at 19/1703Z near the middle of the band if the local winds don't get too out of hand overnight. CW will be the mode at least at first. SSB will be available but I frequently have a hard time hearing my downlink with lower elevation passes, and this one will top off at abou