No, I bind them together. I know that getting the floating mic ground
connected to chassis ground is often recommended to solve RFI getting
into TX audio. Heil is a big proponent of connecting both grounds
together.
73, Steve KW3A
On 5/11/2013 11:32 PM, Butch Bussen wrote:
> Thanks very much. Do you keep the audio ground separate? I always
> wondered why Kenwood did that.
> 73
> Butch
> WA0VJR
> Node 3148
> Wallace, ks.
>
>
> On Sat, 11 May 2013, Steve Forst wrote:
>
>> Butch,
>>
>> Looking at the end of the mic plug (looking at the holes), notch
>> pointing down (6 o'clock position), pin 1 is to the left of the notch
>> (7 o'clock) then clockwise around to pin 7 which is just to the right
>> of the notch (5 o'clock). Pin 8 is dead center.
>>
>> I guess there is always a chance of some variation, but in general for
>> the Kenwood's:
>> pin 1 = mic audio
>> pin2 - ptt
>> pin 3 - down
>> pin4 - up
>> pin 5 - 8 vdc
>> pin 6 - not used in the 590, but may provide speaker audio in some rigs
>> pin 7 - mic ground (may be a braid wire)
>> pin 8 - ground
>>
>> 73, good luck with the new toy, Steve KW3A
>>
>> On 5/11/2013 11:07 PM, Butch Bussen wrote:
>>> How are the pins counted on the 8 pin cable? Lokoking from wich end of
>>> the plug?
>>> 73
>>> Butch
>>> WA0VJR
>>> Node 3148
>>> Wallace, ks.
>>>
>>>
>>> On Sat, 11 May 2013, Steve Forst wrote:
>>>
>>>> After putting this off for a number of years, I finally decided to build
>>>> a box to give me more PF keys for the 590. Turns out I had all I needed
>>>> right here. It's not completely complete yet, since I have to drill
>>>> holes for switches, but it has been wired up temporary and seems to work.
>>>>
>>>> Main component is an old MFJ TNC to radio interface. The KAM is long
>>>> gone and I clipped the 13 pin DIN off it some time ago, but it has an 8
>>>> pin round mic jack on the front and 8 wire mic cable with plug coming
>>>> in the rear.
>>>>
>>>> Also had the needed switches and other odds and ends laying around.
>>>> One thing I learned is that the 590 will let you change the UP/DOWN
>>>> buttons into additional PF keys, so I will wind up with 6 pf keys on
>>>> the box and the original 2 on the radio.
>>>>
>>>> Anyone using a microphone with UP/DOWN buttons can reassign them as PF
>>>> keys if you don't need the UP/DOWN function.
>>>>
>>>> Also added an RCA jack for PTT, and a 1/8 jack for mic input, since the
>>>> mics I use all the time have 1/8 plugs. Maybe later I'll add a mic
>>>> input for a condenser mic, using the 8 vdc found on pin 5 of the 8
>>>> pin cable.
>>>>
>>>>
>>>> 73, Steve KW3A
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>
>
>
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