[MRCA] On the Air Activities at MRCA

ersmar at comcast.net ersmar at comcast.net
Mon May 2 14:52:08 EDT 2005


Al:

     I have an RT-70 and AM-65 PS that operates on 12 VDC (!).  I haven't had it on the air yet, so I'd have to check it out to make sure it works.  If it does, I could bring it to the shindig in Sept.  I'll work on it over the summer and let you know.

     Regarding the link on 3.885 AM, my guess is that the ground wave signal is dissipated over the terrain between the mountain site and the Fairgrounds.  Vertical HF antennas tend to do that.  Maybe an NVIS antenna of some kind on the mountain will work better.   Something as simple as a low dipole (15-25 feet AGL) will launch a signal at a high take-off angle and the sig will come back down loud and clear.  Those of us with 3.885 AM rigs should test this over the summer.  

73 de
Gene Smar  AD3F


> Hi Gene,
> 
> I don't see why not.  I think the collector/operators tend 
> to ignore the FM sets because there's generally nobody to 
> talk to, especially from home.  I made brief contacts with 
> the PRC-77 to the Fairgrounds from Mt. Pocono during the 
> last two field exercises.  I think it actually worked better 
> than the HF stuff over this path.
> 
> Last year I was hoping to round up some sort of FM base 
> station for the Fairgrounds for the whole event.  PRC-77 is 
> NG 'cause it only has tone squelch and not a lot of audio 
> for a speaker.  Perhaps somebody has a serviceable VRC-12. 
> I can bring an appropriate AC supply.
> 
> Al
> 
> Al Klase - N3FRQ
> Flemington, NJ
> http://www.skywaves.ar88.net/
> 
> 
> Gene Smar wrote:
> > Gents:
> > 
> >      Would FM with squad radios on 51 MHz also be included in this demo?
> > Seems to me that many/most folks at the show would recognize the 'Nam era
> > backpacks like PRC-25's and -77's.  Just a thought.
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