First I have to  apologize for giving you bad info  over the weekend.  Even 
though  you clearly said "phono" I had "phone" in my mind and thought the 2 
jacks in question were something like on the 430, a 1/4 for key and a 1/8 
for external speaker.   never having owned a TS-50, I took  a shot, and 
missed by a mile.

Knowing what you know  now, you have to decide if you really want or need 
the buffer.   The rig seems to be set up for direct connection to the amp 
via  a  pair of rca cables.  Maybe you would want to sell the buffer and 
cable and recoup some of your money, or keep and use it for some margin of 
protection.


I just took a fast look at the manual for the buffer.  Since there seems to 
be no place to plug in the pnp cable, you wouldn't use it.   You would 
connect the keying line from the rig to the jack marked "radio" on the back 
of the buffer.  When looking at the rear of the buffer, it is the third from 
the left, right next to the 5 pin din jack.       So your key line goes from 
the rig to the jack marked "radio" and then a cable from the jack marked 
"amp" to the  keying jack on the amplifier.   The "amp" jack on the rear of 
the buffer is the first one on the left when looking at  the rear.   The 
middle jack is "alc" but  you wouldn't use that one as you would connect 
direct from alc  on the radio to alc on the amplifier.

Since you would not use the pnp  cable, you will need to  provide some 
source of external 12 vdc for the buffer.

Yeah, some of it doesn't seem to make sense, but I guess that's why they 
call it amateur radio.

73, Steve KW3A
----- Original Message ----- 
From: "Rick" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, December 15, 2009 9:26 AM
Subject: TS-50 and ARB-704.


> Hi list.
> I read the manual for the Kenwood TS-50 from beginning to end several =
> times.
> It says on the back there are two phono plugs.
> One is relay, and the other is ALC.
> I had a sighted person check and it is exactly like the manual says.
> I don't know why Ameritron says you need the PNP-7D when there isn't any =
> place to plug it into on the TS-50.
> The instructions that come with the ARB-704 aren't clear to me.
> I understand you plug one phono cable into the ALc on the TS-50 and by =
> pass the ARB-704 and plug it into the ALC on the amplifier.
> The other cable you plug into the relay on the TS-50.
> Which jack on the ARB-704 do you plug the cable coming out of the relay =
> into?
> Also do I need the 12 volt DC power cord, or will the ARB-704 draw power =
> from the radio?
> Step by step instructions on how to hook this thing up correctly would =
> be greatly appreciated.
> Like I said the instructions that come with the ARB-704 aren't clear to =
> me.
> Thanks in advance for any help, and 7 3.
>