Harris HHC-731 manual

[KC2TJS]

I’m looking for the owners manual for a Harris HHC-731. The catalog # MM-018321-001. Any help would be greatly appreciated.
73s
KC2TJS

 

[BMDaug]

I’ve not seen a separate manual for the 731. It may exist, but it’s not floating around anywhere. I’ve always had success using older manuals for m/a-com and Harris radios. Any install guide or reference manual for radios made right before the 100M have been good resources. The paper 100M reference manual I have also has some helpful sections…

-B

 

[KC2TJS]

I know there’s a manual for the unit because I seen one listed in the past on EBay. It’s probably in the wild somewhere. I have been referencing the M7300 installation manual for installation of the HHC-731. I’m in the process of getting it installed on my XG-100M.

 

[BMDaug]

I know there’s a manual for the unit because I seen one listed in the past on EBay. It’s probably in the wild somewhere. I have been referencing the M7300 installation manual for installation of the HHC-731. I’m in the process of getting it installed on my XG-100M.

Right… I’ve never seen it digitized. What in particular are you looking for? I’ve installed these a few times and never been lacking for info.

-B

 

[KC2TJS]

Basically I think I have the installation part figured out from reading the M7300 installation manual. I am trying to figure out how to access the different features of the HHC-731.

 

[BMDaug]

Cool cool! So it has pretty much the exact feature set that the 721 has. All the same menus are accessible and the display works similarly. The audio output is 2W, so if you want the full 5W, you can use the 44pin accessory port on the brick, or wire up a headphone or headset jack from the 25pin accessory port on the interface box.

You will use the 731 page of the keypad options menu in RPM. Everything else is ROUGHLY the same layout-wise. Once you use it a bit, the relationship between the 721 and the 731 becomes pretty clear and intuitive! Just make sure that you put useful custom menus in place, so you make sure the FPP and other useful features are available!

Good luck!

-B

 

[KC2TJS]

BMDaug,

Thanks for the help with this question. Looks like I have some reading to do.

73s
KC2TJS

 

[BMDaug]

You’re welcome. Harris has its learning curve. For the 731, it might take a few revisions of your programming to get things set up as far as order of menus, backlight, volume, and stuff like that… just little tweaks and preferences, and exploring menus etc. It really is almost exactly a handheld 721, complete with integrated mic.

Oh, and make sure you have firmware installed that matches the firmware version of the brick 😉.

Some of the older install manuals have instructions for making the headphone/headset connections. It basically explains how to wire from the ‘speaker out’ of the interface box, through some 10 ohm resistors, to the headphones. There’s an ext mic in, and you can assign an aux input to PTT, then wire a switch. (You can use similar wiring to interface with a sound card modem!)

I set the other input to ‘alt PTT’, then set up the programming to alt PTT the APRS channel… so I can have APRS running on a computer, and be talking on whatever channel I want and the APRS will beacon on the proper frequency. It’s good stuff!

-B

 

[KC2TJS]

it definitely sounds like a learning curve. I will probably have more questions the more I dig into this project. Thanks again for the help in getting me started.

 

[KC2TJS]

I’m up and running with my HHC-731 set up on my XG-100M. 🙂