I did get the tip and ring reversed. I.e. TIP is ALC and RING is Tx Req. However, the Tx Req IS an INPUT to the radio. From the manual:
"This 3.5-mm 3-pin jack accepts external ALC (Automatic Level Control) voltage from a linear amplifier on the tip connection, and accepts a "Transmit Request" command on the ring connection. The main shaft is the ground return. The "TX Request" connection, when shorted to ground, puts the FT-897D into the transmit mode, and sends out a steady CW carrier, for linear amplifier or manual antenna tuner adjustment." Phil - AD5X ----- Original Message ----- From: "Joe Subich, W4TV" <[email protected]> To: "Phil & Debbie Salas" <[email protected]> Cc: <[email protected]> Sent: Wednesday, August 10, 2011 7:42 AM Subject: Re: [Elecraft] KPA500 cables needed > >> That ACC jack tip is for an INPUT to the FT-857/897. I.e., grounding >> this input puts the radio into a CW transmit mode for tuning an >> external tuner. > > Not according to the FT-897 Operating Manual, page 18 (Rear Panel > Connections). This may be yet another case of blatantly incorrect > data in Yaesu's manuals but I referred directly to the manual before > posting the information. > > 73, > > ... Joe, W4TV > > On 8/10/2011 7:04 AM, Phil & Debbie Salas wrote: >> "The FT-897 has an "extra" TX GND signal on the tip of the ACC jack. >> A cable with stereo 3.5mm plug to RCA plug can be used to connect >> the ACC jack to the KPA PA Key jack ... an off the shelf 3.5mm stereo >> to 2 x RCA cable can be used for ALC and PA Key if desired." >> >> That ACC jack tip is for an INPUT to the FT-857/897. I.e., grounding >> this >> input puts the radio into a CW transmit mode for tuning an external >> tuner. >> The ring is ALC. You must use the miniDIN8 connector for amp keying. >> >> Phil - AD5X >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
