The stock antenna for the GRC-106 in a M151 is a AN/GRA-50 It has three MS-116A, a MS-118A and MS-117A mast Sections and uses a AB-652 base.

The GRC-106 has two antenna connections, the first is a N connector for 50 Ohm loads and the second is a high impedance connection for use with that antenna. There is a lot of misunderstanding about the antenna tuner in the 106, by design it only works with fifty Ohm or that one type of antenna and was never intended as a broad antenna tuner. The whip antenna settles down and works well on high frequencies but can be squirrely on the low bands like eighty meters.

 

Ray F/KA3EKH

 

 

From: Scott Pastor <scottpastor@gmail.com>
Sent: Tuesday, October 24, 2023 8:46 AM
To: Ray Fantini <RAFANTINI@salisbury.edu>
Cc: MMRCG@groups.io; mrca@mailman.qth.net
Subject: Re: [MRCA] Able Archer 83 AAR

 

 

Ray, 

   Thanks for the excellent AAR. Can you share more information on the 14-foot vertical on the MUTT? 

 

Thanks and 73

Scott, kc8kbk