FHM-2 RJ-45 Wiring pinouts?

  • 1
  • Question
  • Updated 1 week ago
I want to get my FHM-2 mic that came with my Maestro + Flex-6600 working with the Maestro. the FHM-2 mic that came with the Flex-6600 is wired for the flex radio base station. The cable for connecting the mic to my Maestro is on the store but out of stock. Is there a pinout somewhere so I can wire my own? (Tried an ethernet cable but this did not work.)
Photo of Jeremy Gilbert KC1JZE

Jeremy Gilbert KC1JZE

  • 5 Posts
  • 0 Reply Likes

Posted 2 weeks ago

  • 1
Photo of Bill English

Bill English

  • 91 Posts
  • 8 Reply Likes
Download the Flex 6000 Hardware Reference Manual from the Flex website and the mic pin-out  is on page 18.

73,
Bill K4FX
Photo of Robert Lonn

Robert Lonn

  • 252 Posts
  • 64 Reply Likes
I don’t see it on page 18???
Photo of Geoff AB6BT

Geoff AB6BT

  • 36 Posts
  • 6 Reply Likes
I don't believe there is a mic pinout in the hardware manual. The mic connector jack connections are shown on pages 22 and 27-28.
Photo of Bill English

Bill English

  • 91 Posts
  • 8 Reply Likes
Photo of Bill English

Bill English

  • 91 Posts
  • 8 Reply Likes
Man I don't know why this sucker won't rotate, I resaved it, however here is it upside down from page 18 of the hardware reference manual. 
Photo of Chris DL5NAM

Chris DL5NAM

  • 589 Posts
  • 128 Reply Likes
I using my Flex6 hand mic with a normal LAN cable at Maestro. I disconnect the original cable direct behind hand mic, plug LAN cable into Maestro and hand mic - ready!  No problem. It must be 1:1 wiring !

73 Chris
Photo of Jeremy Gilbert KC1JZE

Jeremy Gilbert KC1JZE

  • 5 Posts
  • 0 Reply Likes
A straight Ethernet cable is not working for me. PTT clicks in but no signal from the mic. Have tried several different ones.
Photo of Geoff AB6BT

Geoff AB6BT

  • 36 Posts
  • 6 Reply Likes
I'm not sure this is correct; I found it through a Google search.
Photo of Bill English

Bill English

  • 91 Posts
  • 8 Reply Likes
Geoff you are looking in the wrong manual, it is located in the Flex 6000 Hardware Reference Manual as I mentioned in my first post, You are looking in the Flex 6400 and 6600 Hardware Reference Manual. 
(Edited)
Photo of Geoff AB6BT

Geoff AB6BT

  • 36 Posts
  • 6 Reply Likes
Didn't the OP say he was using a 6600? And I think he is looking for the RJ-45 pinout on the mic.
(Edited)
Photo of Jeremy Gilbert KC1JZE

Jeremy Gilbert KC1JZE

  • 5 Posts
  • 0 Reply Likes
Exactly. I’m trying to connect to the RJ 45 on a Maestro that is controlling the 6600
Photo of Bill English

Bill English

  • 91 Posts
  • 8 Reply Likes
he did say a 6600 Geoff and they are wired the same as a 6500 or 6300. . I was under the impression he was going to make an adapter from the 8 pin to modular.
The simplest way is to just remember that flex mics use the same pin out as a Yaesu rig. If he needs the modular pinout it’s on the 3000 hardware manual or an FT 857 manual. I
Really simple stuff, info available all over.
Photo of Jeremy Gilbert KC1JZE

Jeremy Gilbert KC1JZE

  • 5 Posts
  • 0 Reply Likes
I don’t think I need the modular pinout do I? The maestro has a RJ45 8 pin jack labeled Mic-1. I just tried a few different RJ45 cables. The PTT works but not seeing any levels. I have bias enabled,20db disabled.
Photo of Geoff AB6BT

Geoff AB6BT

  • 36 Posts
  • 6 Reply Likes
I must be missing something here. Where is the 8-pin mic connector on the 6600? I understand that he wants to make an adapter but wouldn't it be from the one of the TRS mic connectors on the 6600 to the RJ-45 connector on the mic?

EDIT: Is there an 8-pin circular mic connector on the Maestro?

EDIT2: OK, there is an RJ-45 mic connector on the Maestro. The pinout is on page 11 of the Maestro User Guide v2.x. Maybe that helps.

EDIT3: I believe this is the mic wiring so that should be all the info necessary.
https://www.qsl.net/o/oz1dgq//home-filer/yaesu-hints/yaesu-mh31a8j.pdf
(Edited)
Photo of Geoff AB6BT

Geoff AB6BT

  • 36 Posts
  • 6 Reply Likes
Where do you have the bias enabled? I'm not familiar with thee Maestro, is that where you enabled the bias? Can you measure any bias voltage coming from the Maestro on the RJ-45 Mic + pin?