Hi Colin.

I actually use all four PF keys on my TS2000S.  PF1 = Speak Frequency Info, 
PF2 = Speak S meter reading; PF3 = Open Squelch, and PF4 = Listen on 
transmit frequency (I forgot what Kenwood calls those last two 
functions).  I like being to listen on the input of a repeater with PF4 
nearly as much as being able to listen to my S meter reading and my 
frequency info.  So, I guess I'd want all four PF keys.

73, de Lou K2LKK



At 01:04 AM 3/3/2008 -0700, you wrote:
>The idea is to build a box that has control over the four buttons typically
>found at the top of an MC45 type hand mike.
>These are the PF key, vfo, call and MR.
>RE assignable on most radios to perform various functions.
>If a person uses a desk mike with either the kenwood dual band mobile rigs,
>or any of the HF rigs that offer both S meter and freq read out, then the
>operator  is limited to the use of a single function key, the one on the
>radio.
>This means you must assign either the freq readout, or S meter read out to
>that single PF key, not allowing for both to be simaltaniously programmed.
>This is only if you use a desk mike, or a microphone that does not have the
>four function keys.
>this is how these functions are performed electronically using 3 pins of the
>mike jack:
>This is a listing for the mc45DM mikes, but I would suspect that the
>resister values are universal for most kenwood radios.
>This  shows the pinout for an RJ45, not an 8 pin kenwood din jack like on
>the ts2000.
>The pinout for the ts2000 would likely be something like pin 3 and pin four
>shorter to either pin 6, or pin 8, which is PTT or chassis ground.
>
>
>Resistance value
>between pin 6 and pin 8
>between pin 6 and pin 1
>0 ohm
>UP
>DWN
>22 kohm
>CALL
>MR
>100 kohm
>VFO
>PF
>
>Personally, I very rarely use more then two function keys on my mc45DM and
>the ts2000.  I use two of the keys for S meter reading and freq readout.
>So, for me, I would simply reassign the VFO key for freq read out, and the
>PF key for S meter readout in the rigs menus, and then use a 100K ohm
>resister on a two way mini momentary toggles switch, or some other sort of
>microswitch with a two way momentary set up.  Basically you short pin 8 to
>pin 6 through a 100K resister to obtain the VFO function switch, and short
>pin 1 to pin 6 through a 100K resister to obtain the PF keys function.
>I suspect that pin 6 is chassis ground, but perhaps not since there is one
>more pin for a typical 8 pin round jack settup that doesn't appear to have a
>function, which might be that of controlling the function keys.
>
>A small hamond box, with an 8 pin standard din jack, or perhaps with the
>RJ45, one for input, one for out put, would fit the bill just nicely.
>Now, how to implement a DTMF pad hmmmm.
>While I'm at it, I might as well put in an XLR jack  for a studio
>microphone, a PTT switch, and a jack for a foot switch.
>But of course, that would mean a relay, and an audio isolation transformer.
>
>any thoughts are welcome on what I have outlined here.
>
>73
>Colin, V A6BKX
>
>
>
>
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>6:50 PM

Louis Kim Kline
A.R.S. K2LKK
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