| Author |
Message |
    
Thrak1978
New member
Username: Thrak1978
Post Number: 5
Registered: 1-2007
| | Posted on Tuesday, February 13, 2007 - 10:26 pm: | 
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I've had a surplus rc-292 laying around for a few years. According to some documents I've been able to find it can be tuned to operate from 20-75mhz in increments.
My question is whether it should be set for 20mhz-27.9mhz or 27mhz-38.9mhz?
Does anyone have an opinion on this antenna? |
Bruce
Senior Member
Username: Bruce
Post Number: 4355
Registered: 9-2003
| | Posted on Tuesday, February 13, 2007 - 10:36 pm: |
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Is that the old base tuned tank wip? we used them on the AN/GRC-3 ( rt-68 / rt-70 )
You might play with it my memory of them if it has a square tuning box at the bottom was they were not very good only broadband ...... |
Thrak1978
New member
Username: Thrak1978
Post Number: 6
Registered: 1-2007
| | Posted on Wednesday, February 14, 2007 - 10:21 am: |
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From the most informative website I have found on this antenna "The primary purpose of this antenna is to imporve the range of VHF Low Band communications. The line of sight range for a manpack radio where one man is standing and the other is lying on the ground is about 2.7 miles, that goes to about 5.4 miles if they are both standing. The range between two RC-292 antennas is about 36 miles."
They give the numbers to tune the antenna to tune it to 26.8mhz or 27.7mhz
It is a straight vertical antenna with 3 radials pointing down at 45 degree angles for a groundplane. Right now I have it assembled as a 5/8 wave, which is longer than any of the lengths the website gives which doesn't leave enough sections to form all 3 radials so I am going to substitute the screw together sections with copper or aluminum tubing. I haven't tried it out yet, but will be tonight. |
Flat_top
New member
Username: Flat_top
Post Number: 9
Registered: 1-2006
| | Posted on Tuesday, February 20, 2007 - 3:12 pm: |
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The technical manual for the 292 is TM 11-5820-348-15. 27 to 38.9 is listed as, (vertical) 3up, (grnd plane) 4 down. From your post it sounds as if you may be missing a few elements. Frequency ranges are dependent on the type of radio used. |
