Krish,
Sounds like you may have confused the AMP KEY RELAY line with the REMOTE KEY
line (or whatever these are actually called on a TS440S -- names vary, but
I'm referring to functions).
A remote key line is in parallel with the PTT and allows the use of a
footswitch or other external keying device to key the transmitter and place
it into the XMIT mode. An amp key line connects to an internal relay which
grounds this one contact when the rig is placed into XMIT from some other
source, such as the PTT switch or the MOX (manual transmit) button.
If you've connected your amp to the remote key line, it won't key the amp
and may very well hang up the TS440 in the transmit mode. I doubt that
you've "fried" anything. You're not hearing any stations because the rig is
in the XMIT mode and cannot receive.
I assume you've unplugged the DIN connector???????
WB2WIK/6
"Each success only buys an admission ticket to a more difficult problem." --
Henry Kissinger
> -----Original Message-----
> From: krishna [SMTP:kkanakas@cisco.com]
> Sent: Tuesday, February 12, 2002 1:25 PM
> To: amps@contesting.com
> Subject: [AMPS] Kenwood TS-440 and TL-922A hook up help
>
>
> Hi all,
> First i would like to thank you all for helping me make a decision
> about
> the TL-922A.
>
> I am a happy camper. I bought the TL-922A for $675. It was amazingly
> clean for its age. I was even more surprised, since the seller
> appraised it to be of average condition. But it tuned out to be
> quite clean. I opened it up and no burns around the bandswitch.
> The tubes are clean. The previous owner was only driving it
> to about 600mA plate current. Looks like the amp was well taken care
> of before he moved to a nice ALPHA.
>
> I also got a pair of Eimac's as a backup( though not full emission).
> In short, i have a complete QRO package now. :)
>
>
> Now here is the sad part of the story.
>
> Not being able to suppress the urge to put things together,
> I started messing up with my perfectly working TS-440. My
> one and only radio.
>
> The users manual requires one to setup the jumper to enable the remote
> option for keying the linear. I did so.
>
> The manual has a diagram of the7-pin remote connector. I bought a 7-pin
> DIN
> connector and soldered wires to the terminals.
>
> I always had the rig connected to the dummy load. I would key and
> try to check for voltages on the terminals( hoping to see the relay
> keying
> voltages). Apparently i did not see any. I tried to hit the PTT on the
> stock microphone.
>
> Now, when i power on, i see the "ON AIR" red LED on. If i key down, i
> get full output to the dummy load. But i don't hear any stations. But
> if
> i change modes or manipulate the keypad, i hear the beeps. I also don't
> see the 'S' meter move. I checked and double checked the usual murphy
> steps before shooting out this email. May be i fried the front end :(
>
> Before i started mucking with it, i was able to hear stations at about
> s2/3 via the dummy load on the MFJ-949E. :)
>
> Anyone got any tip for me .
> 1) I need to make an interface cable to hook up the amp. ??
> 2) Any clues as to what could have gone wrong with the TS-440( a stuck
> relay perhaps).??
>
> Looks like its time to drive down south to the Kenwood service center.
> :(
>
> I have been depressed all afternoon.
>
> Once again, Thank you all.
>
> 73's
> krish
> w4/vu2vku
>
>
>
>
>
> --
> FAQ on WWW: http://www.contesting.com/FAQ/amps
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|