DCFluX wrote:
> I have not gotten the internal controller to activate the repeater, I am
> suspecting that it is waiting for a DQT code (Digital PL) to activate.
If you pull the tone chip, it should repeat CSQ. Make sure the rpt
button on the front is pushed in!
>
> I tweaked the VCO's for 3 volts not knowing any better, I will readjust them
> tonight.
>
> I built a simple interface for the serial EEPROM out of a few resistors and
> zener diodes. At the moment it is just hard wired to some vias I saw coming
> from the programming plug. I will rebuild my interface tonight to have a 8
> pin socket and +5 volt regulator so the chips can be programed out side the
> rig and see whats in the other chip.
>
> Looking at the schematic, I have no idea how they are getting data over to
> the EEPROM on the signalling board, there apears to be no connections to
> the programming plug.
You're right-there isn't. The tone chip is programmed by removing it and
plugging it into the programmer, either the KPT-20 or -50. And that's
the only info it has is the 8 encode/decode tones/codes.
> Also there is an awful lot of fire power on that
> board just for the CTCSS encode and decode, you would think they would have
> put a CW IDer in there.
You forget-this is pre-1990 vintage equipment. It only looks like there
is a lot of hp! It is the whole controller though. It does repeat audio
gating, hang time, TOT, as well as encode/decode. Oh yeah, the repeat
squelch control is on that board too. The front panel sq control has no
effect on repeat.
I guess there wasn't much of a call for an internal ID at the time. I
can't think of any other commercially-made desktop repeater that had an
ID'er built-in from that vintage, either. To get that, you had to go to
an MSF-5000 or MastrIIe/MastrIII size box. In fact, most of the desktop
repeaters of that vintage were crystal controlled!
Looks like there is room enough left over on the
> tray for a smaller controller such as the NHRC-Micro and TCX-12.
Yup, most likely. I know putting something like an ID-8 in was a snap.
Almost enought room for 2 of 'em, not that there's a reason to have two...
>
> The company that had it previous didn't take advantage of the sweet mounting
> method for the duplexer and it was on the top cover with double sided
> stickey tape. $3 at a hardware store will yield a brass strip and sheet
> metal screws to take care of the mecahnics, and some double shielded coax
> and BNC connectors should cure the RF side.
Wow...how revolting. And the repeater CAME with hardware to mount a
duplexer inside. The holes are even tapped already!
--
Jim Barbour
WD8CHL
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