I sent you some notes on that to you Email address.
--- In Repeater-Builder@yahoogroups.com, ac2cs ac...@... wrote:
OK, I've got a MSR2000 base station but according to the model number the
board is the duplex board and it seems to have all the needed parts to be a
repeater, i cannot figure
On Wed, 5 May 2010, wd5etd wrote:
Sorry for the dumb question but, I have a group trying to add a link
at one site for 5 repeaters. They are not trunked. What is the
cheapest way for them to share 1 antenna? They have a very good DB
antenna but, I did not think it necessary for them to
Rick...
VHF, UHF, 800-900??
I may have most of what you would need.
Dave
NN4TT
Hi Guys,
We have been experimenting with building CTCSS Units using the 567 Tone Chip
and good components, i.e. Caps, multi turn pots etc. The stability is not good
in my opinion. We will set it to 107.2 and the next time you check it is off
enough to where it won't decode until it is re-tuned
I must be missing something, there are several MFG of encoders/decoders
still around. You are correct on the stability issue. You will find it much
less frustrating to just buy off the shelf or get the one for your radio
than trying to build one that is stable. Oh there is the cost of the new
On 5/6/2010 10:35 AM, James wrote:
Hi Guys, We have been experimenting with building CTCSS Units using
the 567 Tone Chip and good components, i.e. Caps, multi turn pots
etc. The stability is not good in my opinion. We will set it to 107.2
and the next time you check it is off enough to where
Many many years ago when I was finishing college
electronics, my final year project was a repeater
controller. The danged thing worked really well,
I used 567s for the DTMF decoding, but they
really drifted around with temperature. Took
about an hour to stabilize, and then still needed to
Hi Ted and Stan,
It all started with new hams and old 2-meter rigs w/o PL. I bought a couple
of TD-1 Ramsey Kits to get the Hams into the local repeater. The kits were
not stable so we started to experiment, thinking it would be nice to improve
on the CTCSS Tone filter in the TS-32 which we have
At 07:55 AM 5/6/2010, Stanley Stanukinos wrote:
I must be missing something, there are several MFG of
encoders/decoders still around. You are correct on the stability
issue. You will find it much less frustrating to just buy off the
shelf or get the one for your radio than trying to build one
Anyone got any FX-805J or MX-805J in the PDIP package?
I built a 1000 Hz decoder once based on the 567, it would swing
between 950-1070 depending on the mood it was in.
The ATV guys use these to create a video squelch, looks at the
frequency of the horizontal sync which is 15,374 Hz. Work fairly
To provide closure to this topic... Got your email Eric and the PDF attachment.
Thank you Sir!
John Hymes
La Rue Communications
10 S. Aurora Street
Stockton, CA 95202
http://tinyurl.com/2dtngmn
- Original Message -
From: Eric Lemmon
To: Repeater-Builder@yahoogroups.com
Sent:
Waste of time and effort. Very old technology that never worked well.
Chuck
WB2EDV
- Original Message -
From: James ka2...@gmail.com
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, May 06, 2010 10:35 AM
Subject: [Repeater-Builder] CTCSS Encoder/Decoder
Hi Guys,
We have been
Remember the Heathkit touchtone microphone
for the 2036? Didn't it use 555s?
Sorry for the rocky walk down memory lane!
Tim
From the manual. Jumpers on back-plane are.
repeater non-wireline control.
JU1-IN
JU2-OUT
JU3-OUT
JU4-IN
JU5-IN
JU6-OUT
JU7-OUT
JU8-OUT
JU9-IN for COS and DPL. OUT for PL
JU10-OUT
JU11-OUT
JU12-OUT
JU13, AND JU14 OUT, NONE battery backup.
JU13-OUT and JU14-IN for battery backup tone.
Hope this
http://www.repeater-builder.com/msr2000/msr2000-index.html
Near the bottom of the page you will find a link to a table of jumper settings
that I compiled.
George, KA3HSW / WQGJ413
From: ac2cs ac...@yahoo.com
To: Repeater-Builder@yahoogroups.com
Sent: Wed, May 5, 2010 4:50:43 PM
Subject:
Grab an old Standard HX300 or C734 etc. off ebay for practically nothing(if you
find one) the enc/dec board is a plug in w/wire leads, very small, dip select,
and rock solid. I have one kickin around with the schematic if your interested.
I have adapted these to many old crap radios and they
On 5/5/2010 4:34 PM, wd5etd wrote:
Sorry for the dumb question but, I have a group trying to add a link
at one site for 5 repeaters. They are not trunked. What is the
cheapest way for them to share 1 antenna? They have a very good DB
antenna but, I did not think it necessary for them to buy
The classic NE-567 chip makes a fine CTCSS decoder with one major
consideration. In a real world circuit the detection band-width is
kind of wide, meaning you can and might also experience valid decode
logic on the two tones each side of Frequency-Center.
If you construct a well thought out
At 5/6/2010 08:22, you wrote:
At 07:55 AM 5/6/2010, Stanley Stanukinos wrote:
I must be missing something, there are several MFG of
encoders/decoders still around. You are correct on the stability
issue. You will find it much less frustrating to just buy off the
shelf or get the one for
I've never seen anyone have real success with those chips in
that application.
http://www.hamtronics.com/pdf/TD-3.pdf
Frankly, I think the internal components in the IC do not
have the tolerance and stability to handle it, so no amount of
high-tolerance components on the outside
I would look for something else. About 30 years ago I used some for a DTMF
decoder for an autopatch on a repeater. They were stable enough for that.
There was a problem with the input amplitude to them. Seems that very small
changes in the input voltage of the tone comming to them would
Waste of time and effort. Very old technology that
never worked well.
I guess I'll have to pull the 567 ctcss decoder I built
way back when... even though it still works just fine...
I copied a Yaesu 567 CTCSS Encoder/Decoder circuit and
it works well to this day. Still have the diagram
Remember the Heathkit touchtone microphone
for the 2036? Didn't it use 555s?
A pair of them in a rather ingenious resistor keypad
matrix circuit. Worked well as long as the resistor
values didn't change with age (IE don't use carbon
resistors).
Sorry for the rocky walk down memory lane!
Skipp,
I suspect that you were the exception rather than the rule, then. To me
there are better ways to do it than a 567. I remember playing with various
567 circuits back in the 70's. Never could get reliable performance. Used
them for paging frequencies. Gave up and started using commercial
At 5/6/2010 19:09, you wrote:
Skipp,
I suspect that you were the exception rather than the rule, then. To me
there are better ways to do it than a 567. I remember playing with various
567 circuits back in the 70's. Never could get reliable performance. Used
them for paging frequencies. Gave up
Our Flea market spots are 737-739, come by and say hello, second row,
near the Bar.
Andy W6AMS
aseyb...@andrewseybold.com mailto:aseyb...@andrewseybold.com
315 Meigs Road, Suite A-267
Santa Barbara, CA 93109
805-898-2460 office
805-898-2466 fax
www.andrewseybold.com
Ah, yes, the (in)famous 567. It could be quite good at what it was designed
to do. The datasheets and application documentation were actually very
helpful. Being TTL compatible they stressed the power supply with current
spikes so a bunch of caps were needed on the supply buss near the chip.
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