The RARS Group was created to promote portable, field, mobile and DXpedition amateur radio operations. The group is open to all licensed amateurs who enjoy operating from the field for enjoyment or for simulation in emergency preparedness.

http://rarsgroup.com

73

Alan, thanks for your response. I did'nt think that the 2:1 was all that bad, but wanted to be sure.  I made the adjustment to the input tuner and the swr is now 1:1.

Thanks again,

Terry

Just purchased a new Ameritron 811 and put it inline with my Icom  718 and dipole. The dipole is resonate with a 1.1 SWR when hooked directly to the 718 or to my 259b analyzer.  When I put the Ameritron in line, the radio shows about 1.25:1 when in standby mode. As soon as I switch to operate mode the SWR at the radio jumps to 2:1.

I can get full output from the amp and stay within manufacturers specs using approx 65 watts from the exciter.

My question is:

1. Should I worry about the SWR the radio is seeing.

2. Can the Input Tuning slugs be adjusted to reduce the swr, and if so, what kind of tool is needed to make this adjustment.

Thanks in advance,

73
Terry / KI4KQQ

Carl, check out this link.  There is a lot of good info on J-38 keys.

http://k6ix.net/J38Keys.html

Terry / KI4KQQ