Tempo 1 and CTCSS tones?

[Brian Carling]

Well, since no one has really answered your question about the way
YOU want to do it....

I will say this - IF the Tempo S1 (note this is an S1 NOT a Tempo 1
which is an HF xcvr!!) - IF it has a MIC jack on the HT then you can
inject the tone in a SUMMING circuit along with microphone
audio and IF the HT does not filter out audio below 300 Hz like
some rigs do, THEN you will get your CTCSS tone in there, and yes, I
think it has to be there all of the time. The deviation level should
be set alittle lower than your voice audio. I think this would be
do-able with an appropriate cable from the sound card output, and
that would have to drop the level considerably.

Do you know how to make resistve divider networks (a T pad or L pad
circuit will do it nicely)??

If so you can connect this to the MIC input and SEE if it works.
If NOT, then you will have to patch in to the deviation stage after
the a.f. amplifiers and that could get VERY tricky.

If you are not accustomed to piddling with tiny electronic gizmos,
then I do not recommend that you try any of the above OR the other
suggestions that were made. Only an experienced electronics tech
should take a soldering iron to the insides of a handy-talky! Trust
me on that one!

73 de AF4K - Bry

On  2 Oct 97 at 20:08, Eugene wrote:


> At 01:57 PM 10/2/97 -0700, Matthew Erickson wrote:
> >Hi All!
> >
> >I have an old Tempo 1 Handi-Talkie and it does not have provisions
> >for the CTCSS tones required to access today's 2-meter repeaters.
> >
> >However, I have acquired a computer program which will create, using
> >the Sound card, all the CTCSS tones one could ever use.
> >
> >Is there a more-or-less feasable way to couple the tones from my
> >computer Sound card into the HT so those CTCSS tones will provide
> >repeater access? Yes, it would destroy portability of the HT; but, right
> >now it's useless, anyway.
> >
> >If this can be done, for how long are the tones transmitted? One
> >second, or what? I assume the tones have to be sent each time
> >you key the HT.
> >
> >Anything else I might need to know to pull this off?
> >
> >Many thanks for info.
> >
> >Rev. Allen
> >
> >de:   Allen, KJ6XH      (Kind-a Junky 6 X-rated Hotel)
> >         and Matthew
> >          mattall at speedlink.com   or mattall at juno.com
> >                          BOATANCHORS  LIVE!!!
> >
> Allen,
>
>    CTCSS stands for Continuously Transmitted Coded Squelch System
> therefor, the tones are transmitted continuously during the transmission.
>
> You could inject the tones from your sound board into the deviation
> pot wiper of you HT, but you ned to be careful about levels, impedance,
> etc.  An easier way would be to go to a local ham radio store and buy
> a miniture CTCSS board from someone like Commspec. I believe that
> they have units small enough to fit inside.  Check the HRO WWW page
> at WWW.HRO.COM
>
> 73
> K1NR/3
>
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****************************************************
*** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA  *
**  E-mail to:  bry at mnsinc.com                     *
*** See the interesting ham radio resources at:    *
**  http://www.mnsinc.com/bry/                     *
****************************************************
AM International #1024, TENTEN #13582. GRID FM19. Using a SWAN 250 on 6m,
Other rigs: Valiant, DX-60/HG-10, FT-840, TM-261, Ameco TX-62, Gonset Communicator III
HTX-202...TEN-TEN #13582, DXCC #17,763 Bicentennial WAS

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