2014年7月19日 · MFJ-915 RF Isolators are 1:1 ferrite chokes designed to be placed in line with 50-Ohm coax. These RF Isolators are effective from 1.8 to 30 MHz at full SSB legal power. …

2014年8月14日 · '.wavrider thank for your initial suggestion on the MFJ 915. I haven't began the antenna install or new station setup and won't untill sunday. I just want to have everything that …

2005年4月8日 · That MFJ-915 is the same thing as a coax choke, it just uses ferrite 'beads' instead of a coil of coax. It isn't a balun, by the way, and why MFJ calls it a "Line isolator". It …

2015年8月8日 · The Imax 2000 will be going up at 12' with the mfj 915 connected to it's so 239 via a double male 259. If it works it works. If not ill move on and possibly go with my coax made …

2010年3月8日 · The MFJ-915 is made up of 50 ferrite core beads placed on a 13-inch length of RG-303 coaxial cable. The coax and SO-239 connectors have Teflon insulation for maximum …

2014年8月14日 · My LMR 400 and pl 259 double connector (for the mfj 915) hasn't arrived yet. I'm looking forward to not only the install but I'm kinda nervously anticipating the moments right …

2015年8月8日 · Does it matter which end of the MFj 915 gets installed onto my pl 259's antenna feed? I'm assuming it doesn't matter but without any help from the instructions I just dont …

2006年6月11日 · Recieved my MFJ - 915 RF ISOLATOR today..the instructs say ''the rf isolater should be placed close to the transmitter'' and also it says '' install the rf isolater by connecting …

2015年8月11日 · Can the antenna be tuned at feedpoint without use of 9ft of coax? Answer is yes. So mast becomes counter poise.

2008年12月18日 · In case you're wondering (or even if you're not ), that MFJ-915 is what is known as a W2DU balun. A lot of people make them, and they're very easy to make yourself if …