Steel Soldiers::Military Vehicles Supersite
Mark Forums Read

Reload this Page



» Log in
User Name:

Password:

Not a member yet?
Register Now!
» Online Users: 268
71 members and 197 guests
123mack , 212sparky , 2buells , 319 , 4446970 , 86m1028 , ak2co , aph1979 , av8or , Bamamastiff44 , Bigec1 , biggen , Brad , chadande , Chain-Saw , chris4amd , chuck-10 , cucv1833 , derf , Detonation , DEUCEY , dezert ratt , dusterbnb , Feelin_froggy , finnd1 , flighht2k5 , FrankUSMC , G-Force , gavan , goatijoe , GoldComet6 , GreenBull , Grega , gunboy1656 , gunieboy , hunderliggur , IowaCUCV , jeepzilla47 , jeff55schauer , joshjourdan , jrule , kassim503 , kmfcap , m816 someday , mdmorgan , mhb285 , Mike O , MT4222 , mudman , ncdan , oddave715 , PlethoraOfGuns , rebel_raider , redneck rebel , Repo3004 , ryan77 , sandman7655 , seano11 , sojourner , spartan_185 , Tank007 , The PIG Smith , TMNT , toddm , Tow4 , trooper632 , Tweeter166 , txmytx_catahoula , WolfWalking , youngunbd
Most users ever online was 902, 10-29-2011 at 04:09.
View Single Post
Old 09-14-2009, 15:54   #3 (permalink)
tennmogger
Colonel
 
Join Date: Dec 2006
Location: Greenback, TN
Posts: 372
tennmogger is on a distinguished road
Default

B3.3T is right, you just need to tune the antenna to be an electrical quarter wavelength at 26 to 27 mHz (pick a channel).

Just verifying, you did not get the tuner, right? Is the antenna you do have a simple 2 piece ceramic base insulator and rubber covered spring? Any pictures?

(edit) If you did get the tuner, that tuner steps through the bands with the radio as it changes. Steps are in 1 MHz increments. To use the tuner plus antenna on a specific frequency, the tuner has to be tuned within the band for that channel. That requires a little tuning tool and the use of a tuning set (have one, will have to look in the shop) but it can be done. Then the tuner would remain on that tuned frequency and passively make your CB happy. However, there will be signal loss in this tuner because it's making a non-resonant antenna 'look good' to the radio. You will get a better signal from a 1/4 wave whip.

If you have just the antenna, it's like a NATO AB-15 base and uses the screw together whip pieces (MS-115 to 119 etc, or AB-21 to 24 series.. Select a whip combination to be about 102" long, or (regrettably) trim the end off the top one to get the right length plus a little, then fine tune with an SWR meter.

If this antenna is something unique and special to the SEM-25 (which I have in my Unimog Radio truck), would you be interested in some kind of trade?

thanks,

Bob

Quote:
Originally Posted by comdiver View Post
I just came across German Army issue antenna for the SEM-25 radios. The discription said they work from 25mhz - 70mhz. They have a tuning box with them but there is also a remote unit that tunes the antenna which isn't incluided. I would like to use this with a CB set, 27mhz. The antenna needs to be setup and left alone. Can I do this, how?
__________________
1952 M-38
LST-178 Lube and Service Trailer
M-105A2 trailer, bare
M-105A2 with sides, bows
'old' Onan 115 v radar power generator, 4 cyl opposed
2 x S-250 Shelter, 318 shelter
1957 Unimog 404 flatbed, French NATO (Germany)
1965 Unimog 404 radio truck (German Army)
1970 Unimog 406
1978 Unimog 406
1982 Unimog 406
1988 Unimog U-1300L MIL contract, Fire Service life (red over OD paint)

Last edited by tennmogger; 09-14-2009 at 16:01.
tennmogger is offline   Reply With Quote
 
Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 11:36.


Copyright 1999-2012 SteelSoldiers.Com No information or photos to be used without permission.