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Author Topic: Mic. Pinout / R.S. HTX-252  (Read 2549 times)
N5ZZQ
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Posts: 1




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« on: September 13, 2000, 11:37:52 PM »

Need Mic. Pinout for Radio Shack HTX-252 2m. Mobile.  THANKS!
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KE6AFE
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Posts: 1


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« Reply #1 on: November 06, 2000, 02:53:48 PM »

Here's what Radio Shack <support@tandy.com> sent me today:

Good afternoon!

Thank you for your email.

The microphone plug for the HTX-252 (cat. no. 19-1127) is a round plug
with pins 1-7 arranged around the edge in a semi-circle, with pin 8 in
the middle.  With the empty space below pin 8 on the bottom, the pins
are numbered 1-7 from the bottom left clockwise.
        4
     3     5
    2   8   6
     1     7

The pinouts are as follows:

   1.  Microphone Audio / PTT
    2.  Scan / Pri
        3.  Down / Up
 4.  5 Volts
   5.  Lock / Shift
      6.  Call / Step
       7.  GND
       8.  F / MHz

If you have any further questions, please feel free to write us again.

<snip>
Thank you,

Beth
RadioShack Product Support
br/kk
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KE4OAR
Member

Posts: 8




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« Reply #2 on: November 18, 2000, 07:03:52 AM »

The previous post has an error, at least based on my HTX-252.

Pin 8 is the ground and Pin 7 is the F/MHz. The rest of the pin outs seems ok.

FYI, I've built a cable for packet by using the same design as a cable for Yaesu or Radio Shack (HTX-202/404) HTs substituting an 8 pin mike connector for the 2.5mm plug.

Also, I believe that you could build a box with push buttons to get the function buttons. Then you could have most of the functions accessed from the mic without plugging in the mike.

I've got packet up and running with my HTX-252, but have only done a little testing on control box idea. I have not actually built the control box yet.
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W6RWN
Member

Posts: 2




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« Reply #3 on: November 20, 2000, 07:53:40 PM »

For some reason, the e-mail for Radio Shack support:  support@tandy.com does not work for me.
Did they change their e-mail address? I would like to ask them a question about the HTX-252,
also. Here is 1 of the comments. I wish the rig would come back to memory when you turn
it back on, from off. But, instead it goes to VFO. Also, it would be great if the tone would be
different for Memory 0.
73...Don
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K0BZV
Member

Posts: 22




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« Reply #4 on: December 22, 2000, 12:10:06 PM »

Amen to Don's comment about returning to a memory!
Got the thing running on packet and it works fine.
Now working on an interface box.  Too cheap to buy
one from MFJ!!  Got a big junk pile (err..box) so I
decided to have a whack at it.  Happy Holidays to all
from K0BZV and Family
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KD4GBA
Member

Posts: 1




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« Reply #5 on: February 18, 2001, 01:33:05 AM »

Tandy corporation is no longer in existance.  They changed the corporate name to RadioShack Corporation so support should now be "support@radioshack.com".  Try it and see if that don't work for you.
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K8LYU
Member

Posts: 1




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« Reply #6 on: May 10, 2001, 11:44:40 PM »

I recently purchased both a HTX-252 and a KPC-3+

RadioShack sent me the mic connections and then stated they could no longer help.

Questions:
1). Are pin 7 and 8 really switched??
2). If BOTH PTT and transmit go to pin 1 of the mike,
what capacitor and resistor are required to keep these signals apart?
3). Is there something else I should know?

Dick Ferman
K8LYU
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