[aprssig] RC-D710 APRS display head on an old IC-2AT HT
bruninga at usna.edu
Wed Sep 24 17:47:10 CDT 2008
> 1) What is this diagram trying to say?
Sorry, I had the PG-5J mini-din on there just so I could see
what I was doing in tracing out the same signals as they appear
on the RJ-45 that goes to the RC-D710 Display Head. Now that
they are traced, I don't need the PG-5J and can just interface
the D710 Display Head to the HT via only the RJ-45 and a clean
source of 9-11 VDC.
> Does the D710 head have a 6-pin Mini-DIN
> connector on it? Or is it the RJ-45 plug?
It's the RJ-45 is all you need.
> (The Mini-DIN pinout looks like the standard
> used on many Kenwood/Icom/Yaesu radios with
> the mini-DIN "packet/data" connector on them.)
Yes, that is why you can plug the RC-D710 APRS display head into
ANY such modern radio and get the full D710 APRS display
functionality on any radio.
> Does this mean a standard mini-DIn-6-to
> mini-Din-6 KVM cable will connect the radio
> TX/RX/DCD/PTT signals (but not DC power) to
> the head ?
Yes, and that is all the $80 PG-5J interface is, a connector box
and a 10V regulator.
> > Wow, a handheld D710.
> > I just noticed that the RC-D710 APRS display head has a spec
> > voltage of 9 to 11 volts. Since 8 nicads would give 8.8 to
> > volts, I think I will give it a try.
> > 8 NiCd's taped to the back of the Display Head, will let me
> > it with any HT (without having to purchase the $80 PG-5J
> > interface which contains the 10 volt regulator) Maybe.
> > Anyone done this? Here is my schematic I am working on:
> > www.ew.usna.edu/~bruninga/aprs/RC-D710-connx-pwr.GIF
> > Bob, WB4APR
> Stephen H. Smith wa8lmf (at) aol.com
> EchoLink Node: 14400 [Think bottom of the 2M band]
> Home Page: http://wa8lmf.com --OR--
> World Digipeater Map
> JavAPRS Filter Port 14580 Guide
> "APRS 101" Explanation of APRS Path Selection & Digipeating
> Updated "Rev H" APRS http://wa8lmf.net/aprs
> Symbols Set for UI-View,
> UIpoint and APRSplus:
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