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#1
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Kenwood TS-820s cw problem
I just bought a used ts-820 which had been completely reconditioned and has all new tubes. It works great in SSB but when I insert the CW key and put the Mode sw in CW, I get a constant tone that none of the dials on the front seem to effect. When I remove the jack, the tone goes away. Any suggestions?
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#2
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Kenwood TS-820s cw problem
On Mon, 31 May 2010, HeyReub wrote:
I just bought a used ts-820 which had been completely reconditioned and has all new tubes. It works great in SSB but when I insert the CW key and put the Mode sw in CW, I get a constant tone that none of the dials on the front seem to effect. When I remove the jack, the tone goes away. Any suggestions? Have you looked at the key? Some have a lever that allows for closing the contacts on a continuous basis, such as when tuning up. See if there is, and that it's not closed. Or, it may be a short at the plug. Michael VE2BVW |
#3
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Kenwood TS-820s cw problem
Michael Black wrote in e.net:
On Mon, 31 May 2010, HeyReub wrote: I just bought a used ts-820 which had been completely reconditioned and has all new tubes. It works great in SSB but when I insert the CW key and put the Mode sw in CW, I get a constant tone that none of the dials on the front seem to effect. When I remove the jack, the tone goes away. Any suggestions? Have you looked at the key? Some have a lever that allows for closing the contacts on a continuous basis, such as when tuning up. See if there is, and that it's not closed. Or, it may be a short at the plug. Or it may be a 2-conductor plug on a radio which requires a 3-conductor plug. I know my Yaesu FT-857D, FT-897D, and FT-920 require 3-conductor plugs, and if I insert a 2-conductor plug, it will put the radio into transmit RIGHT THEN. Check the manual and the plug type first. If the plug type is OK, then ohm out the plug. If it's not shorted and it's the right type, then something interesting is going on. -- Mike Andrews, W5EGO Tired old sysadmin |
#4
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Kenwood TS-820s cw problem
In article , mikea
wrote: Or it may be a 2-conductor plug on a radio which requires a 3-conductor plug. Mike- I think you have it. I found the service manual at mods.dk. It shows a two-circuit key jack with additional circuits switched when the key is plugged in. I didn't get the operator manual, but it probably has more information about keying. When the TS-820 came out, it was a top-of-the-line rig, so it may very well have a built-in keyer. With only one jack, it would have to accommodate both a straight key and a paddle. I wonder if there is a menu choice that disables the second circuit? Fred |
#5
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Kenwood TS-820s cw problem
Fred McKenzie wrote:
In article , mikea wrote: Or it may be a 2-conductor plug on a radio which requires a 3-conductor plug. Mike- I think you have it. I found the service manual at mods.dk. It shows a two-circuit key jack with additional circuits switched when the key is plugged in. I didn't get the operator manual, but it probably has more information about keying. When the TS-820 came out, it was a top-of-the-line rig, so it may very well have a built-in keyer. With only one jack, it would have to accommodate both a straight key and a paddle. I wonder if there is a menu choice that disables the second circuit? Fred The TS-820S came out in 1978. It did not have a built in keyer. Use a mono 1/4 " phone plug, it ought to work fine. I still have mine. |
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