Batboard

I have a DTMF model # HMN 1010B with a
6pin conn. Can someone tell me how to wire
it to use on a maxtrac with the 8pin conn?

Steve M

Well...
Since I'm out of date, do you mean a 6-pin RJ-12 to a 8 pin RJ-45? It is possiable, just look at the wire color's in the plugs, and patch accordingly.

Get one RJ-45 female screw-type telephone surface mount box and one RJ-12 (6 conductor) screw-type telephone surface mount box.

Use some cross-connect telephone wire between the two boxes. If you don't have cross connect wire, ask the network admin for some, or borrow some from a telco outdoor wiring pedestal. Wire them up using the correct pinnings.

Beg the network admin. for a 3' Cat-5 patch cable, or borrow one from a co-workers computer (but not if you are a dispatcher.) Hook it from the Maxtrac.

Hopefully it will work...

The HMN1010 microphone is intended for use on the MOSTAR which had a 6 pin RJ11 type mic jack. I have taken this microphone, cut off the plug, and crimped on a new 8 pin RJ45 type plug so that it would work on a Maxtrac radio.

If that is what you want to do, this may help: The wire colors in the Mostar mic cable are: 1-Blue (hook), 2-Yellow (N/C), 3-Green (PTT), 4-Red (Mic Hi), 5-Black (Mic Gnd), 6-White (PTT Gnd). If you install JU6 in the mic that will common Mic Gnd with PTT Gnd so you can use only one ground wire as required for Maxtrac.

Cut off the old plug, put on a boot if you have one, strip back the cable, cut off the Yellow and White wires and insert the remaining wires into the 8 pin plug as follows:

6 - Green
5 - Red
4 - Black
3 - Blue

If you hold the RJ45 with the gold contacts up and to the right, they are numbered from 8 at the top to 1 at the bottom.

Here is the rest of the information on this "family" of microphones.

HMN1010B - MOSTAR DTMF Microphone, Trunked 800 MHz
HMN1011B - MOSTAR DTMF Microphone, VHF, UHF, Carrier Squelch
HMN1014B - SYNTOR DTMF Microphone, Trunked
HMN1018B - MITREK / MOTREK DTMF Microphone
HMN1019B - CONVERTA-COM DTMF Microphone
HMN1020B - MAXAR / MOXY DTMF Microphone
HMN1021B - MAXAR 80 DTMF Microphone
HMN1022B - SYNTOR / MARATRAC A2 & A3 DTMF Microphone, Non-Trunked
HMN1023A - MCX-100 DTMF Microphone, Private Line, Dash Mount
HMN1024B - MOSTAR DTMF Microphone, VHF, UHF, Private Line
HMN1025B - MCX-100 DTMF Microphone, Carrier Squelch Remote
HMN1026B - MCX-100 DTMF Microphone, Private Line, Remote Mount
HMN1032B - SYNTOR X 9000 / MARATRAC A7 DTMF Microphone, Private Line
HMN1033A - MAXAR 50 DTMF Microphone, VHF, UHF, Private Line
HMN1034A - MAXAR 50 DTMF Microphone, VHF, UHF, Carrier Squelch

The forum software converts these messages to HTML and collapses the table below, so you will have to space the columns back out. The resistor values are in ohms. R4 is a 2.2k ohm resistor that is only installed for the HMN1026B MCX-100 private line DTMF microphone.

R19 R18 JU1 CR9
------------------------------
HMN1010B - OUT IN IN OUT
HMN1011B - 750 OUT OUT IN
HMN1014B - 8.2k IN OUT OUT
HMN1018B - 750 OUT OUT OUT
HMN1019B -
HMN1020B - 750 OUT OUT OUT
HMN1021B - 750 OUT OUT OUT
HMN1022B - OUT IN IN IN
HMN1023A - 750 OUT OUT IN
HMN1024B - 750 OUT OUT IN
HMN1025B -
HMN1032B - OUT IN IN OUT
HMN1033A - 750 OUT OUT IN
HMN1034A - 750 OUT OUT IN

R19 R18 JU1 R4 CR9
-----------------------------------
HNM1026B - 1.5k OUT OUT IN OUT

JU2 - when pressing 2 DTMF keys in a row or column
IN - generates a single tone for the row or column.
OUT - inhibit DTMF generation

JU3 - tone timing mode
A - continuos tone mode
B - timed tone mode

JU4 - auto PTT hold time
C - 1.4 seconds
D - 2.5 seconds

JU5 - * and # time duration
F - 0.5 seconds
G - 1.25 seconds


<font size=-1>[ This Message was edited by: Mike B on 2002-01-27 21:04 ]</font>