IH8MUD™ Forums - View Single Post - dual band antenna on FJ40-where?

panoramic · 04-21-08, 10:07 PM

I am using a Larsen through-glass dual-band antenna. It works really well.
The trick with through glass antennas is that you need to make sure the glass is NOT passivated. This means that there is no lead content in the glass. The only way I know of to determine this is to test with LOW power and have a buddy temporarily hold the antenna in place and watch the SWR. It turned out the the only OEM glass that was good were the ambulance door windows.

I ran the coax cable over the roll cage with zip ties. I left enough extra cable so that the door can open/close without interference.

I use it for APRS and voice.

The antenna is secured using a one-time adhesive tape. I bought spare adhesives for $12 each (just in case). I have never needed to replace the tape , it is very secure.

I have used many antennas and I have to say that this one is one of the least maintenance and least likely to get damaged.

04-21-08, 10:07 PM	#7
panoramic IH8MUD Regular Join Date: Jul 2006 Location: Austin,Tx TLCA# 15991 Posts: 219	I am using a Larsen through-glass dual-band antenna. It works really well. The trick with through glass antennas is that you need to make sure the glass is NOT passivated. This means that there is no lead content in the glass. The only way I know of to determine this is to test with LOW power and have a buddy temporarily hold the antenna in place and watch the SWR. It turned out the the only OEM glass that was good were the ambulance door windows. I ran the coax cable over the roll cage with zip ties. I left enough extra cable so that the door can open/close without interference. I use it for APRS and voice. The antenna is secured using a one-time adhesive tape. I bought spare adhesives for $12 each (just in case). I have never needed to replace the tape , it is very secure. I have used many antennas and I have to say that this one is one of the least maintenance and least likely to get damaged. __________________ N6LG - Extra Class Amateur Radio Operator 1982 FJ40 (HJ41), 12HT turbo diesel, H55, ARB locker, e-locker, Marks Gears, APRS 1997 LX450, 1HT-FT/H151 diesel conversion in process... 1972 FJ40 Fun Beater Rig, Bone Stock!