Remember the Heathkit touchtone microphone
for the 2036? Didn't it use 555s?
Sorry for the rocky walk down memory lane!
Tim
Hi John,
Did you guys ever figure out what you wanted to do with
that lowband micor PA?
thanks,
Tim W5FN
Utopia, TX
John,
Check this link. Although it is for a Yaesu VX8, most of the entries
are .CSV, and you should be able to read with xcel or other spread
sheet.
There are a lot of entires.
Tim
http://www.worldwidedx.com/handitalkies/33905-rt-systems-local-frequency-files-repository.html
Hi Jim,
If you mean the AC cord, it is a standard test-equipment type
power cord.
The DC connector looks like one of the 2.1mm coaxial power
connectors.
Tim
OOPS, my bad!!!
My comments are related to the 1100S, NOT the 1000s.
Sorry for the bogus info!!!
Tim
Hi John, If you don't have a need for it,
drop me a line. Just putting up a 6 meter
repeater have the rest of the guts.
Thanks,
Tim W5FN
Oops, sorry guys, I just replied to Mort... I meant
to do it to his own e-mail.
Sorry.
Tim W5FN
It's for a Motorola R2002B Service Monitor
Tim
Hi Chuck,
Thanks for the info.
How far out from the tower should the elements
be placed?
Thanks,
Tim
Hi Chuck...
Looks like I have two different versions of it.
The one that is marked 225 has a square aluminum box
that the element pieces fit into. The driven side is farthest
away from the tower. It has a short (10) piece of pipe
attached to it that would fit into one of the standard
tower
Hi Milt,
Thanks for the info. Chuck figured that out as well. I took some
pix sent them to him.
Only issue may be the 'recommended' height issues.
Will figure it out.
Thanks!
Tim
Oops, forgot to mention that this was directly out of the amp.
The filter has been removed. (I already spread out the turns, but
for this I wanted to make sure it wasn't affecting the power).
Tim
Hi All,
Thanks for the info.
I had made about half the recommended mods here on RB...
making the mods where the tuning didn't quite make it.
I'll go and make the rest of the mods see what kind of
power I can get out of it.
I understand about the 'reduced-power' issues, so will re-tune
it as
Well, things are starting to get muddy!
Since I was having some issues with both of the exciters,
I started looking closely at them, and things didn't seem to
be quite correct.
I asked the guy I got them from if he had an extra exciter,
as one of them seemed to have some parts missing.
Anyhow,
Thanks Norm Skipp - I'll do some cutting tomorrow.
Any clue what the pattern might be hung off the side of
a wide spaced tower? (triangular about 15' between
legs at the height the antenna will be).
Thanks again!
Tim W5FN
Hi Jim,
Well, I haven't gotten to the charger portion of it yet,
although several of the guys have given some good
inputs on charging further up in this same thread.
For our purposes, the repeater probably won't
be used that often, but needs to have the battery
in the best shape possible when
Hey Mark,
In the 'old' spectra, after you hold in the scan button
get the 'sel mode' message, use the mode buttons to go through
the modes. When you get one you want, push the 'SEL'
button. Multiple presses will take it through the priorities.
To delete, use the 'DEL' key.
While the 'sel'
Oh, Pushing the 'HOME' button will take you out of
the scan program mode.
Tim
Hi Mike,
We're using a Kenwood TKR-720. The price was
right (we had it on hand), it's relatively compact,
does what we need it to. Older technology, with
the front panel controller, etc. You know of a
way to reduce the current?Did remove the
+ from the audio amp got it down to 300ma,
I got the info today from TXRX, although it wasn't the identical
duplexer.
It did give me enough info to get it up and running... still a bit more
attenuation than they spec, but it works pretty good.
I was able to mount it inside the TKR-720 (minus power supply).
Put three of the 'cans' under
Thanks Skipp Jeff,
On the previous incarnation of the portable
repeater, we were using a 'vari-notch' duplexer,
and it worked quite well, although not quite
small enough to fit inside the 720's box.
I can fit 2 of the 5 cavities inside the space
where the power supply was, but the other
three
Thanks to all for the great response!
Well, since we are 1meg splits here -thanks Don-,
that should help some also. (I had looked up a
couple of repeaters around here saw .5 split,
so thought that's how it was).
Anyhow, it's just in the thinking stages.
Thanks again,
Tim W5FN
Eric/Jeff/Chuck/...
thanks for all of the good info.
As the receiver site will be solar ( there's
nothing electrical of any kind for quite a ways),
I guess the site should be pretty quiet.
Now start looking for some hardware.
thanks again!
Tim
Got a phone number for the 'people paying for this'? I'd like to put
in a request!! :-)
Tim
Hi Eric/all,
Since this is just a curiosity at this time, let's figure 50 watts,
0.25uV, 500khz split.
I figured that was the case about the vertical separation, but
threw it in anyway.
One site would be a solar site, so it would make sense to
make it the RX. Guess it might require a notch
Hi Lee,
Yeah, I know it doesn't exactly 'sip' power, but we do have
a lot of sun around here! :-)
I've measured the current, with all the 'necessary' modules,
it's a bit less than 500 ma. I think I might be able to improve on
that a bit also.
If this were a primary repeater, I'd do a bit more
Hi Scott,
Thanks for the info... I've got a board with an older Motorola
RF module on it (plus a couple of spares). I think that I might
use that board, else I'll checkout the boards here on R-B.
Got to thinking that I'd like to make it a 20w repeater, so the
12w strip wouldn't work anyhow.
Hi Jim,
That thing that looks like a fuse (round ceramic cylindrical) is
actually the crystal for the micro in the control head. If you
short it, it really won't work! :-) (thought the same thing got
the T shirt)! haha
Tim
Hi Eric,
I looked all through the user's manual (on the supplied disk),
but the only thing they talked about was the backlighting
control. Thought it would be there also. I'll check it again,
perhaps I missed it.
Thanks,
Tim
Hi Eric,
Apparently that feature is not available.
I've done enough LCD work to know about biasing, etc,
so I might dig into the control head do some measurements.
Would be helpful if I had a schematic of the head tho!
Thanks,
Tim
Hi Mike,
It took me a while to find the info - hopefully it is still relevant to
what you need.
We ordered a new phasing harness for a DB-224, and it took a
while to get, as they evidently only do a build of them when they
are building antennas.
Here's the numbers that were on the box.
Part #
Hi Mike,
Thanks for the info.
Yes, I've cleaned it up good... I use a q-tip with
a baking soda/water combo, then wick solder on
the pad till it flows... sometimes gotta scrape a
shiny spot first. Then soldersuck the pad
clean up with wick. Then another qtip with
lacquer thinner (contains
Hi Kris,
But when the dispatcher was sending tones to both repeaters, isn't
that simulcasting? That would be the only time that I could see
any kind of issue, as the mobile/portable units wouldn't be
transmitting on both at the same time.
Thanks,
Tim
Here in the county, all the fire repeaters have the same
output frequency pl tone, but different input pl tones.
They use separate radios for each area (E, W, etc).
What they would do in our case would be to allocate
(on their console) a different radio for the additional
repeater.
I believe
Hi Kris,
Thanks for the additional information.
I've been conversing with Milt off line, and I think the
only way this will work will be for them to sequentially
dispatch the two different departments. First on on repeater
#1, and then on #2.
Their thought was to use two different radios with
Hi Jason/Milt/Bill/Kris,
Thanks for all the info ammunition.
Since I take care of the westernmost radio stuff,
it should be enough to convince them to sequentially
page the departments not screw up what we already
have.
Think it'll be a while, as they have to get their
coordination stuff
Hi David,
Is the Hear Clear board only on the 900 mhz spectras?
I was looking in my service manual, and it talks about
the board plugging into P501, but on my VHF spectras,
this plug is unpopulated..
As a side note, when I went to replace the capacitors,
I noticed that a fire ant had given it's
Thanks all for the info!
Tim
Gee, that's OK for a museum.. but an individual?
Think I'll enlarge some of the pix, just for nostalga!!
Tim
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