Hello,
I noticed that both the National Mall and Udvar-Hazy Center have Passport LTR systems. I suspect another Smithsonian site having a Passport LTR system is the Paul E. Garber Preservation Facility in Silver Hill, Maryland (SE of Washington DC). I seem to remember hearing some LTR bursts on the 406 MHz band in the area when I was down in Washington last year.
It is likely that all the Smithsonian sites are linked together because that is one of main features of a Passport LTR system. The idle bursts on a Passport system tend to be every 2 seconds.
I also need a favor from someone in the area that can monitor the Smithsonian Passport LTR system and is familar with Trunker. This system is not on the standard 450 to 470 band. I need someone to use the ltrdump program found here
http://www.radioreference.com/modules.php?name=Forums&file=viewtopic&t=10074
and log the idle bursts on the system for 10 to 15 minutes. Email me the ltrdump.txt file.
Normally you would need a low-pass slicer for LTR work but a regular one should work for the idle bursts. I am trying to figure out if the frequency band information is sent in the idle bursts. This will help improve the LTRDump and LTRTrunk programs.
Thanks and 73 Eric
I noticed that both the National Mall and Udvar-Hazy Center have Passport LTR systems. I suspect another Smithsonian site having a Passport LTR system is the Paul E. Garber Preservation Facility in Silver Hill, Maryland (SE of Washington DC). I seem to remember hearing some LTR bursts on the 406 MHz band in the area when I was down in Washington last year.
It is likely that all the Smithsonian sites are linked together because that is one of main features of a Passport LTR system. The idle bursts on a Passport system tend to be every 2 seconds.
I also need a favor from someone in the area that can monitor the Smithsonian Passport LTR system and is familar with Trunker. This system is not on the standard 450 to 470 band. I need someone to use the ltrdump program found here
http://www.radioreference.com/modules.php?name=Forums&file=viewtopic&t=10074
and log the idle bursts on the system for 10 to 15 minutes. Email me the ltrdump.txt file.
Normally you would need a low-pass slicer for LTR work but a regular one should work for the idle bursts. I am trying to figure out if the frequency band information is sent in the idle bursts. This will help improve the LTRDump and LTRTrunk programs.
Thanks and 73 Eric
