ANTENNA'S A MUST f ~ ~ MEAN TO CLEAN Dear Editor. i. . We had trouble getting dirt and corrosion out of the upper end of the AB-15/GR antenna base .. that is, until we latched onto a .30-cal brush. Using an old small arms bore cleaning brush (FSN 1005-556-4174), we ran it around inside the antenna section to get 'er clean. The brush works well by hand or on an electric motor, and really puts dirt on the run. SFC DALE SHIVERDECKER FT KNOX, KY O(Ed Note Sounds good .. and it takes only a couple or three spin-arounds of the brush to get the job done.) Whoa ... Don't hit that mike button unless the antenna is connected to your AN/PRC-74( ) radio set. WH=Y=?.. A fired-up transmitter without an antenna hookup will burn things out mighty fast. So, just make sure your AS-1887() PRC-47, slant wire or dipole antenna is tied into your set before turning the OFF-ON-TUNE switch to TUNE. And, do like it says in TM 11-5820- 590-12 or -12-1 for making the antenna connection.