Hey everyone,
Look in your junkboxes, I 'm looking for an unmodified, working Com-Spec
TE-64D Tone Box. cosmetics unimportant. Thanks
de Lee
K4LJP
73
--
Always drink upstream from the herd.
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
ones so that has to be figured in.
Stan
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of James
Sent: Thursday, May 06, 2010 9:36 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] CTCSS Encoder/Decoder
Hi Guys,
We have been
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
...@yahoogroups.com] *On Behalf Of *James
*Sent:* Thursday, May 06, 2010 9:36 AM
*To:* Repeater-Builder@yahoogroups.com
*Subject:* [Repeater-Builder] CTCSS Encoder/Decoder
Hi Guys,
We have been experimenting with building CTCSS Units using the 567 Tone
Chip and good components, i.e. Caps, multi
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
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
and they always work perfectly.
Just a suggestion :-)
--- On Thu, 5/6/10, James ka2...@gmail.com wrote:
From: James ka2...@gmail.com
Subject: [Repeater-Builder] CTCSS Encoder/Decoder
To: Repeater-Builder@yahoogroups.com
Date: Thursday, May 6, 2010, 10:35 AM
Hi Guys,
We have been experimenting
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
make a
differance as to a good decode or not.
- Original Message
From: James ka2...@gmail.com
To: Repeater-Builder@yahoogroups.com
Sent: Thu, May 6, 2010 10:35:36 AM
Subject: [Repeater-Builder] CTCSS Encoder/Decoder
Hi Guys,
We have been experimenting with building CTCSS Units using
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