From: "Tim Smith" Add Address Date: 2004/08/16 Mon PM 03:32:46 EDT To: FT-7800R@yahoogroups.com Subject: [FT-7800R] Re: Pinout for progamming cable Hello Greg: I did precisely the same thing. I used the level converter that I bought for my FT-50 years ago for many radios that I own. I keep the same level converter and use adapters for each radio. Take a look at the two diagrams in http://groups.yahoo.com/group/FT- 7800R/files/Clone/ This should clarify the DIN side of the schematic for you. The user manual contains an error in the clone cable schematic (radio to radio cable). The pinout schematic is correct, but they mislabled the PTT/Clone line as the PKS (packet squelch status). Some may follow their wrong instincts and try to contruct the cable using the PKS (pin 6) instead of the PTT (pin 3) of the mini-DIN. Also please use caution when buying Yaesu's CT-39A. The user manual gives pin and wire color code assignments that are different from the one's provided with the CT-39A. And guess what! The CT-39A I bought from HRO recently also had an even different color code according to the pin assignments. The best thing to do is to RING IT OUT with an ohmmeter or continuity tester before constructing the cable. Another tip is the connector and cable itself. While it might be tempting to buy the CT-39A, you shouldn't have to. This is the same connector used in PS2 keyboards and mice. You can find these at computer shows, flea markets, hamfest and more for only $1 or less. These are easy to cannibalize to build your adapter without breaking the bank. My final configuration of the ADMS 1C cable now consists of the basic cable. I plug the 4 conductor to 3 conductor adapter that is used for the FT-50, VX-1R, VX-2R, VX-5R, etc. I then take a 2 to 1 adapter (commonly referred to as a stereo to mono adapter) and then connect my CT-39A wired to a 1/8" mono jack. This one cable/toolbag and adapters now supports: [Yaesu] FT-7800R, FT-8800R, FT-11, FT-40, FT-41, FT-50, FT-51, VX- 1R, VX-2R, VX-5R, VX-7R and more [Radio Shack] Pro-93, Pro 95, Pro-2053 and more. [Icom] IC-706MKIIg (CI-V) I'm sure this combination supports many, many more. No need to invest in separate cables for each radio...just use one. 73, Tim Smith N1TI Mattapoisett, MA The --- In FT-7800R@yahoogroups.com, "Greg" wrote: > Ok, > > I am going to answer my own question... I have been told by a > reliable source that the programming cable needs to be connected only > to ground and PTT at the packet interface connector. > > I will be building my connector soon and I will post a follow up if > this turns out to be bad information. > > -- 73's de Greg N1XQ > > --- In FT-7800R@yahoogroups.com, "Greg" wrote: > > I have seen this question tossed around a little but never really > > answered. I already have a TTL level converter interface cable that I > > use to program my Yeasu FT-50. I'm sure I can build a little > > interface to change it to work with the mini-din port on the FT-7800r. > > > > Before I go through the trial and error approach, I was wondering if > > anyone had ever built their own cable. I am assuming that the pinout > > in the manual for the packet port is mostly what I am looking for. I > > would also guess that the programming data line is either the 1200 > > baud or 9600 baud packet inputs. Does anyone know for sure? > > > > Thanks in advance! > > > > - Greg N1XQ