Nov 18, 2009 · I beg you to connect an older tube output HF rig to your antenna and check the SWR. Now rock the load control trough it's range recalibrating the SWR meter and checking …

Dec 16, 2012 · So how far 'off' is your antenna, and is it too long or too short? If the SWR is lower at the high end of the band it's too short. If it's lower at the bottom end of the band then it's too …

Nov 3, 2015 · SWR antenna tuning. From what I read for amps the SWR should be less than 1.5 going in. I see many talk about where the SWR Meter goes and most say by the radio or after …

Jul 3, 2007 · Good afternoon. When I use my Boomer 250 to drive my Heathkit SB-200, I have no problems with SWR. But when I use my HF rig (Yaesu FT-ONE) to drive the Heathkit, the …

Jul 9, 2016 · FWIW I had an HF antenna that matched perfectly on 20m. It was mounted on my trunk lid. The SWR went thru the roof everytime I closed the trunk and my rx was affected but …

Apr 15, 2005 · Anyone know why and if it is normal for the swr to go up when amp is on and in use? I have an ameritron al-811 and the swr on the radio is 1.2 to 1 when talking on radio …

Feb 15, 2009 · In this case, it is the amplifier. You have already established that the antenna is properly tuned and in good working order with low SWR, except when power is applied. …

May 9, 2007 · The SWR meter does not react to the output impedance of the amplifier. The meter simply assumes you've connected it to a 50 ohm transmitter. Even if the output impedance of …

Jul 28, 2013 · Depends on the amp or radio. Some start cutting power back with as little as a 1.5:1 or less VSWR. But I am pretty sure it depends on the type of radio or amplifier. Yes most …

Jul 15, 2004 · The 3 diffeerent SWR Vs Frequency measurements used 50 foot, 100 Foot, and 150 Foot lengths of coax. And wrote down the SWR Vs Freqency on a graph, this indicates …