[MRCA] AS-2259 Antenna

[Gene Smar]

Mark:

     Further to Z's references, the -2259 was intended to be operated along with a tuner for the PRC-47.  Otherwise, the resonant freqs of the two inverted Vee dipoles is around 6 and 9 MHz.   I fabricated my own -2259-like inv Vee NVIS system by using fiberglass camo poles and pairs of resonant dipoles wires cut for 80, 60, 40 and 20 M.  I select two bands at a time and install the wire pairs, end insulators and guy ropes just like the -2259.  We've proven the success of this design over the past ten years at the annual Gilbert, PA fall MRCA meet.  

     As for the ground mounted antenna for the BC-654, TM 11-275 shows only a vertical antenna mounted on the insulator on the side of the BC-654, along with counterpoise wires on the ground.  There is no antenna component that we would today call an NVIS radiator.  So I conclude there never was an NVIS antenna for the BC-654 and the AS-2259 is, to the best of my recollection, a Vietnam-era radiator, used extensively by LLRP chaps.

73 de
Gene Smar  AD3F


-----Original Message-----
From: mrca-bounces at mailman.qth.net [mailto:mrca-bounces at mailman.qth.net] On Behalf Of B. Smith
Sent: Sunday, January 21, 2018 2:41 PM
To: mrca at mailman.qth.net
Subject: [MRCA] AS-2259 Antenna

   Mark , we did a lot of testing of the AS-2259 as well as matching circuits.
http://k4che.com/AS-2259%20Notes/AS-2259%20Page%201.htm
Z

On 1/21/2018 11:35 AM, WW2RDO via MRCA wrote:
> I know that the American, British and German Army first started using 
> NVIS antennas for some of their HF radios during World War Two.  So 
> far, I'm having trouble finding much information about how far each 
> military went as far as NVIS antenna use, or any photos of any WW2 
> vintage antenna.
>
> So here's what I'm trying to build.  I'm looking to build an NVIS 
> antenna for the BC-654 using only material available during WW2.  That 
> would include any balun or any additional antenna tuner to be used 
> with the radio, if they are needed.  I am unaware of any issue NVIS 
> antenna issued for the BC-654.   Particularly concerning is the fact 
> that the BC-654 did not use coaxial feed line for the antenna.  I know 
> the AN/GRC106 had an NVIS antenna, the AS-2259GR ,  but I see that the
> AN/GRC106 used a coax antenna feed line.  I am not sure that the 
> AS-2259GR  antenna, even if I could find one, would work with a BC-654.
>
>
> Mark D.
>
>
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