View Full Version : Kenwood TS 430S and Ameritron 811H
WA7JXN
08-02-2011, 05:52 PM
I have a Kenwood TS430S transceiver; I recently bought an Ameritron 811H amp. The manual says to connect a cord from the 'exciter' to the relay input on the amp; I can't find any output on the Kenwood other than an external speaker. When I key my transceiver there is no indication that the amp is receiving anything to send out. What am I missing? Is my rig not compatible with the amp?
Brad WA7JXN
You need a "ground on transmit" signal from the radio. it is found on the DIN connector in the rear. Check your manual for the pins that give you a connection to ground in transmit, then connect it to a phono plug cord to the amps antenna relay. Done.
WA7JXN
08-02-2011, 09:50 PM
Thank you! As you can tell I'm a relative HF novice. I appreciate the advice.
Brad
You need a "ground on transmit" signal from the radio. it is found on the DIN connector in the rear. Check your manual for the pins that give you a connection to ground in transmit, then connect it to a phono plug cord to the amps antenna relay. Done.
You need a "ground on transmit" signal from the radio. it is found on the DIN connector in the rear. Check your manual for the pins that give you a connection to ground in transmit, then connect it to a phono plug cord to the amps antenna relay. Done.
Or call a Kenwood dealer and see if they have part # X42-1110-11. This is a pre-assembled amp/alc cable for most Kenwood radios.
WA7PRC
08-07-2011, 05:25 AM
Or call a Kenwood dealer and see if they have part # X42-1110-11. This is a pre-assembled amp/alc cable for most Kenwood radios.
They're available in the aftermarket as well. CW-Man on ebay has them (item #370284031821 (http://cgi.ebay.com/Kenwood-TS-430-TS-430S-TS430-TS430S-Amp-Cable-W-ALC-/370284031821)) for $24... probably about the same cost as Kenwood. Frankly, I'd just buy a DIN plug, RCA-to-anything shielded cable, install the plug on the cable, and be done in about 10 minutes & $10.
In any case, be sure to leave the ALC disconnected. It typically causes more problems than it prevents, especially with amplifiers and transceivers that are from differing manufacturers. Just don't overdrive and/or underload the amplifier, as indicated by your monitor oscilloscope.
