[Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software

[Bernd Maestling]

Hello

1. Series I must be programmed by eprom, means you have to
   create the binary files with your needed frequency(s) and 
   burn them into a 27C64. Series II have a eeprom and must
   be programmed by software and a cable.

2. All UHF and VHF units can be tuned easily for amateur-radio
   usage. Here in Germany we use lots of them as UHF repeaters.
   I converted about 15pcs in the last few years.

I have most of the service manuals available as PDF, so if 
someone need something special leave me a note and I'll look 
for it.

73 Bernd
DK5BM


--- In Repeater-Builder@yahoogroups.com, gdw <[EMAIL PROTECTED]> wrote:
>
> As I have a set of these radios, I have a couple of questions.
> 
> 1.  How do tell the difference between the series 1 and series 2 radios?
> 
> 2.  As radios are the -20 versions, my next question is can they me
made 
> to move down to 146 mhz (or even 144 Mhz) without too much trouble?
> 
> Gale
> KC4PL
> 
> Gmail - Kevin, Natalia, Stacey & Rochelle wrote:
> >
> > That will be the series I as the series 2 can be drect programmed.
> >  
> > Kevin, ZL1KFM.
> >  
> > My status 
> > Get Skype  and call me for free.
> >
> > - Original Message -
> > *From:* anpap 
> > *To:* Repeater-Builder@yahoogroups.com
> > 
> > *Sent:* Sunday, August 31, 2008 9:51 AM
> > *Subject:* [Repeater-Builder] Re: Tait 800 - EPROMS, Manuals,
Software
> >
> > I think they are Series I (published in 1991).
> > You have to program the EPROMs using an external programmer.
> >
> > Andreas
> >
> > --- In Repeater-Builder@yahoogroups.com
> > , Ed Yoho
> >  wrote:
> > >
> > > Andreas Papagapiou wrote:
> > > > Hi Ed and group!
> > > >
> > > > I have the manuals for T838 PA, T837 Exciter and T835 RX
scanned
> > in PDF
> > > > form.
> > > > I uploaded them on Rapidshare.
> > > >
> > > > You can download them from
> > > >
> > http://rapidshare.com/files/141353699/TAIT_T800_Manuals.zip.html
> > 
> > > > The file size is around 69MB.
> > > >
> > > > Hope they are the ones you are looking for.
> > > >
> > > > 73,
> > > >
> > > > Andreas - 5B8AP
> > > >
> > >
> > > Andeas,
> > >
> > > Are these Series I (EPROM) or Series II (PC / EEPROM) manuals?
> > >
> > > Ed Yoho
> > > W6YJ
> > >
> >
> >
>

[Repeater-Builder] Tait receiver module T835 series I needed

[Bernd Maestling]

Hello,
I'm searching for a working Tait T835-20 or -25 
"series I" receiver module or a source to get one.
A source or seller in europe would be fine ;-)

73
Bernd
DM5BM
 







 
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[Repeater-Builder] Re: still searching: settings TAIT T800 CTCSS boards

[Bernd Maestling]

Brett,

if your information is different from the 419-80200-00 T800-02
to T800 Series I fitting instructions you can send it anyway ;-)

73
Bernd
DM5BM

--- In Repeater-Builder@yahoogroups.com, "Brett" <[EMAIL PROTECTED]> wrote:
>
> Hi I have got the info just now from a friend and I will try to send
to you 
> tonight it is 16:21 hrs now.
> Cheers
> Brett
>







 
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[Repeater-Builder] Re: T800 CTCSS boards: received informations

[Bernd Maestling]

Hello Brett,

I already received the informations today, thanks anyway.
William, N9BOE, gave me the pdf earlier this morning.
So if anybody else need this file, please let me know.

73
Bernd 
DM5BM

--- In Repeater-Builder@yahoogroups.com, "Brett" <[EMAIL PROTECTED]> wrote:
>
> Hi I have got the info just now from a friend and I will try to send
to you 
> tonight it is 16:21 hrs now.
> Cheers
> Brett









 
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[Repeater-Builder] Re: still searching: settings TAIT T800 CTCSS boards

[Bernd Maestling]

Hello Brett,

yes, that's true, but you can also program them
with a 10 (!) pole DIP-switch inside.

73
Bernd
DM5BM

--- In Repeater-Builder@yahoogroups.com, "Brett" <[EMAIL PROTECTED]> wrote:
>
> Hi I believe the ctcss is set during programming. IE channel freq
and ctcss.
> Cheers
> Brett
> 
> - Original Message - 
> From: "Bernd Maestling" <[EMAIL PROTECTED]>
> To: 
> Sent: Wednesday, December 14, 2005 6:42 AM
> Subject: [Repeater-Builder] still searching: settings TAIT T800
CTCSS boards
> 
> 
> > Hello,
> > I'm still looking for the DIP-switch settings
> > of the TAIT T800 "Series I" internal CTCSS boards.
> >
> > If someone have some informations please let me know.
> >
> > 73
> > Bernd
> > DM5BM









 
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[Repeater-Builder] Re: still searching: settings TAIT T800 CTCSS boards

[Bernd Maestling]

yeah, I wrote them twice but no reaction.
Yesterday I wrote to Tait UK, maybe they'll
give me some informations.

73
Bernd
DM5BM


--- In Repeater-Builder@yahoogroups.com, "Matt Beasant" <[EMAIL PROTECTED]>
wrote:
>
> Try the Taitworld support pages - I just tried to get the URL to
post here 
> but it seems their web site is down.
> 
> Google for Taitworld and you should find what you need when the site is 
> back!
> 
> 73,
> 
> Matt
> - Original Message - 
> From: "Bernd Maestling" <[EMAIL PROTECTED]>
> To: 
> Sent: Tuesday, December 13, 2005 10:42 PM
> Subject: [Repeater-Builder] still searching: settings TAIT T800
CTCSS boards
> 
> 
> Hello,
> I'm still looking for the DIP-switch settings
> of the TAIT T800 "Series I" internal CTCSS boards.
> 
> If someone have some informations please let me know.
> 
> 73
> Bernd
> DM5BM








 
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[Repeater-Builder] Re: still searching: settings TAIT T800 CTCSS boards

[Bernd Maestling]

Hello Ed,

yes, thats what I thought since they don't use a
special CTCSS IC but a PLL.
I'll try ;-)

73
Bernd
DM5BM


--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hello,
> > I'm still looking for the DIP-switch settings
> > of the TAIT T800 "Series I" internal CTCSS boards.
> > 
> > If someone have some informations please let me know.
> > 
> > 73
> > Bernd
> > DM5BM
> > 
> > 
> 
> Bernd,
> 
> I don't know if the tone boards you have are the same as are in one of 
> mine, but the way I figured out the switch settings was to look at the 
> encode frequency and switch them until I found the frequency I wanted. 
> The encode and decode will work from around 50Hz up to at least 2KHz. 
> The switches are binary weighted.
> 
> Sorry I don't have any detailed info on them.
> 
> 
> Ed Yoho
> WA6RQD
>








 
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[Repeater-Builder] still searching: settings TAIT T800 CTCSS boards

[Bernd Maestling]

Hello,
I'm still looking for the DIP-switch settings
of the TAIT T800 "Series I" internal CTCSS boards.

If someone have some informations please let me know.

73
Bernd
DM5BM








 
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[Repeater-Builder] TAIT T800 CTCSS and Alarm Unit

[Bernd Maestling]

Hello,

today I received a second T800 series I repeater.
This one has CTCSS (T8?8) boards and a alarm unit (TS5040)
installed. Does someone have informations about these options?

Thanks a lot
Bernd
DM5BM








 
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[Repeater-Builder] Re: Tait 800 portable repeater conversion

[Bernd Maestling]

Hello Paul,

yes, it'll work.
Make a search in this group, there was a discussion
about this repeaters last week.

I already programmed my T855/856 and exchanged the ICOM
repeater with the TAIT. MUCH better results.

My RX is working at 431MHz (German RX input) the TX at 439MHz.
You have to align the VCO, maybe you have to change a capacitor
and a resistor in the RX Module.

For programming you'll need the software and 27c64 eproms.

73
Bernd
DM5BM

--- In Repeater-Builder@yahoogroups.com, "teanbyp0642" <[EMAIL PROTECTED]>
wrote:
>
> Does anyone know how to convert the Tait 800 to work on the UK 70cms 
> band (430 - 440 Mhz).  Spec says the repeater will work as standard on 
> 440 - 470Mhz.  I would like to buy it for our local club but don't 
> want to waste money if it won't cover that frequency.  Also, any 
> funnies in programming the EPROM ?
> 
> Regards,
> 
> Paul ZS6PG/G4GZC
>









 
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[Repeater-Builder] Re: Tait T856 audio question

[Bernd Maestling]

Hello Ed,

my unit don't have this terminals on the back. 
It was prewired from module to module (original)
and the speaker goes via the charger-module to
the speaker in the channel switcher.

I'll check the jumpers.

73
Bernd

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hello Ed,
> > 
> > I can't follow you at the moment.
> > My settings are now the following:
> > 
> > T855: 
> > PL100 1-2
> > PL101 2-3
> > PL102 2-3
> > PL103 1-2
> > PL104 1-2
> > Pl105 1-2
> > PL106 1-2
> > 
> > T856:
> > PL100 3-4
> > PL101 5-6
> > PL102 5-6
> > PL103 1-2
> > 
> > The Audio is going from the T855 Pin 1 (Line I/P1)
> > -> controller -> T856 Pin 6 (Audio 2).
> > 
> > All other combinations won't give audio or this loud noise
> > on the audio as I wrote before (Audio1->Audio1 (or Audio2, 
> > can't remember))
> > 
> > What did you mean with TB1-1...?
> > 
> > The jumpers on the connetors are all open now.
> > 
> > 73
> > Bernd
> > DM5BM
> > 
> 
> You have the T855 RX set up as de-emphasised which should produce a 
> reasonably flat response with varying audio input frequencies. This is 
> the same as most folks use. As you are connected to T855-1 for RX audio 
> you also need to ground T855-4. If you don't want to use the
transformer 
> isolated RX audio (T855-1&4), you could take it directly from T855-6 
> which is de-emphasised unsquelched audio.
> 
> It looks like you have the T856 TX set up in a way that would roll off 
> the highs. Try:
> PL100 3-4
> PL101 1-2
> PL102 9-10
> PL103 3-4
> This should give a flatter overall system response RX to TX.
> 
> TB1 is on many / most of the base stations and is a terminal block that 
> the receiver and transmitter wiring terminates at (TB2 is used for 
> multiple frequency select). Both terminal blocks are part of a small PC 
> board on the back of the card cage. By changing the jumpers on that PC 
> board you can configure the system to be a stand alone repeater by 
> connecting the RX 600 ohm line outputs to the TX 600 ohm line inputs
and 
> also connect the GATE O/P (COS) to the TX PTT input. Or you can remove 
> the line input/output and GATE jumpers to configure it as a base 
> station. Since you are using an external controller, you would set
it up 
> as a base station and use your controller for both audio and PTT
functions.
> 
> As your Tait was originally shipped as a stand alone repeater, it will 
> have the line input and outputs tied together unless you have removed 
> the jumpers on the small external PC board.
> 
> Verify that:
> T855-1 is not connected to T856-1
> T855-2 is not connected to T856-2
> T855-3 is not connected to T856-3
> T855-4 is not connected to T856-4
> If they are, make sure T856-6 is not connected to T856-7 or you will 
> have multiple audio paths. This may be part of the loud noise you hear 
> using some configurations.
> 
> Ed Yoho
> WA6RQD
>








 
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[Repeater-Builder] Re: Tait T856 audio question

[Bernd Maestling]

Hello Ed,

I can't follow you at the moment.
My settings are now the following:

T855: 
PL100 1-2
PL101 2-3
PL102 2-3
PL103 1-2
PL104 1-2
Pl105 1-2
PL106 1-2

T856:
PL100 3-4
PL101 5-6
PL102 5-6
PL103 1-2

The Audio is going from the T855 Pin 1 (Line I/P1)
-> controller -> T856 Pin 6 (Audio 2).

All other combinations won't give audio or this loud noise
on the audio as I wrote before (Audio1->Audio1 (or Audio2, 
can't remember))

What did you mean with TB1-1...?

The jumpers on the connetors are all open now.

73
Bernd
DM5BM

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hello Ed,
> > 
> > I'm using an external controller.
> > I think the flat response sounds best. I wired T855 output 
> > PIN 1 (Line I/P1) via the controller to the T856 inputs 
> > Audio1/Audio2 (Pin6/5). If I use the RX's Audio 1/2 outputs 
> > I have a strange, loud noise on the audio.
> > 
> > 73
> > Bernd
> > 
> 
> As you are using an external controller, you should check to see that 
> the audio circuits within the controller are flat relative to frequency 
> (check AC voltage versus frequency) past the first stage (where 
> de-emphasis is usually located). If you are using flat audio on the 
> T855, you will be sending audio with pre-emphasis into the controller 
> and the controller will need to de-emphasise it. If you don't de-emp
the 
> audio your touch tone decoder will not be happy as the audio will
have a 
> large amount of twist.
> 
> You might try driving the transmitter via its 600 input. If you are not 
> using the 600 input, you should remove the jumper between TX AF1&2 and 
> then drive TX AF2. Otherwise your controller output is also driving the 
> 600 transformer.
> 
> Also make sure the jumpers are removed that connect the TX 600 to RX
600 
> (look for four jumpers near TB1-1 > TB1-4)
> 
> Ed Yoho
> WA6RQD
>








 
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[Repeater-Builder] Re: Tait T856 audio question

[Bernd Maestling]

Hello Ed,

I'm using an external controller.
I think the flat response sounds best. I wired T855 output 
PIN 1 (Line I/P1) via the controller to the T856 inputs 
Audio1/Audio2 (Pin6/5). If I use the RX's Audio 1/2 outputs 
I have a strange, loud noise on the audio.

73
Bernd

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hello,
> > 
> > since my T800 is working now I have a question about the
> > "audio-mode" jumpers in the TX-module.
> > 
> > What is the best setup for an HAM-repeater. I tried
> > the different modes and I thin I got the best results
> > with flat response. Compressor-mode seems to bit a bit 
> > noisy. Whats about pre-emphaised mode ? 
> > 
> > Since I only thested it on my table with handheld
> > radios maybe someone can give me his setup.
> > 
> > Thanks
> > Bernd
> > DM5BM
> >
> 
> Bernd,
> 
> It depends upon whether you are using the Tait as a stand alone
repeater 
> by bridging the 600 ohm RX out to TX in or some form of external 
> controller. If you are using the Tait by itself, I would set it up to 
> use flat in both the TX and RX. If you are using an external
controller, 
> you will need to match the Tait to what the controller wants to see.
> 
> The one mode I would avoid is using the compressor.
> 
> Ed Yoho
> WA6RQD
>








 
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[Repeater-Builder] Tait T856 audio question

[Bernd Maestling]

Hello,

since my T800 is working now I have a question about the
"audio-mode" jumpers in the TX-module.

What is the best setup for an HAM-repeater. I tried
the different modes and I thin I got the best results
with flat response. Compressor-mode seems to bit a bit 
noisy. Whats about pre-emphaised mode ? 

Since I only thested it on my table with handheld
radios maybe someone can give me his setup.

Thanks
Bernd
DM5BM







 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hi Ed,

yes, I was wondering how this units were running in the 
past with 15-20 Watts output and no special cooling at the
Police in United Kingdom.

I made some testing on my dummy-load but I can't get it
running in the 5 Watts save mode in this time. 

I have a last question. My unit has a TS5041 control
panel with some charger, speaker/volume-switching options
and an headphone connector. In fact, the charger-switch 
isn't connected. I've seen this panel from this "portable" 
units but whats the reason to put one into a base-station ?

73
Bernd
DM5BM

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hi Ed, I came about -118dBm at 12dB SINAD
> > It's near the same as the Kyodo/Nokia BSR 450 units.
> > The helix filter tunig was ok, I have some turns left.
> > 
> > The other filters are no problem.
> > 
> > 73
> > Bernd
> > DM5BM
> 
> Bernd,
> 
> That's perfect. The receiver is exceeding spec (-117dB) almost 10MHz
out 
> of band.
> 
> The one last caution I have for you is to watch the case temperature on 
> the T856 if you are going to be running long transmit cycles as there 
> isn't any real heat sink on it. If you are, a small fan will do wonders.
> 
> Ed Yoho
> WA6RQD
>









 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hi Ed, I came about -118dBm at 12dB SINAD
It's near the same as the Kyodo/Nokia BSR 450 units.
The helix filter tunig was ok, I have some turns left.

The other filters are no problem.

73
Bernd
DM5BM

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hello Ed,
> > 
> > after replacing the capacitor and the resistor I now have
> > a lock and I can tune it to 10 volts.
> > When I measure near the VCO unit my counter shows a solid
> > 386.7875MHz signal. 
> > 
> > This time I programmed 2 eproms, one BIN and one HEX.
> > Only the BIN worked.
> > 
> > An now, after I realized why I received no signal from
> > my RF-generator (I replaced the Dummy-Load cable with the
> > one from the generator, hi) I can make the receiver tuning.
> > 
> > Thank you very much Ed, you are a professional !
> > 
> > 73
> > Bernd
> 
> 
> Bernd,
> 
> Glad it worked for you. Let us know what sensitivity you end up with
and 
> how much tuning range is left at 431.
> 
> Ed Yoho
> WA6RQD
>









 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hello Ed,

after replacing the capacitor and the resistor I now have
a lock and I can tune it to 10 volts.
When I measure near the VCO unit my counter shows a solid
386.7875MHz signal. 

This time I programmed 2 eproms, one BIN and one HEX.
Only the BIN worked.

An now, after I realized why I received no signal from
my RF-generator (I replaced the Dummy-Load cable with the
one from the generator, hi) I can make the receiver tuning.

Thank you very much Ed, you are a professional !

73
Bernd



--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > ok, so far so good.
> > The RX-module won't work. The PLL don't lock, L1 voltage is low
> > (0,16V) and on TP12 I have about 433MHz (also near the VCO).
> > The TCXO is working ok.
> > 
> > 73
> > Bernd
> > DM5BM
> 
> To receive at 431 the VCO will need to be at 431MHz-45MHz(1st IF) or 
> 386MHz. It was built to go from 395MHz to 440MHz. This may be below
what 
> the VCO will tune without adding some capacitance. First try adjusting 
> the trimmer capacitor to the lowest frequency you can. If this is above 
> 386MHz, you will need the extra capacitance to get the VCO into the 
> correct range. Look in your manual near the back at the parts list for 
> the VCO for the differences between range C and range D. There are a
few 
> capacitors and one resistor that are slightly larger on the D range.
You 
> can either parallel some small chip caps or replace the current ones 
> with the new values. The coaxial resonator is also longer, but as you 
> are only going down to 431 the current one may be long enough.
> 
> Try adding 1.5 pF across C7 on the RX VCO.
> 
> 
> Once the VCO is going, you may find the helicals need to be
lengthened also.
> 
> 
> Ed Yoho
> WA6RQD
>









 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hello Ed,

after replacing the capacitor and the resistor I now have 
a lock and I can tune it to 10 volts.
When I measure near the VCO unit my counter shows a solid
386.7875MHz signal. The problem now is, that I cannot
hear a signal when I connect a speaker. Shall I tune the
filters ? Normally I should hear a signal anyway.

This time I programmed 2 eproms, one BIN and one HEX.
Only the BIN worked.

73
Bernd

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > ok, so far so good.
> > The RX-module won't work. The PLL don't lock, L1 voltage is low
> > (0,16V) and on TP12 I have about 433MHz (also near the VCO).
> > The TCXO is working ok.
> > 
> > 73
> > Bernd
> > DM5BM
> 
> To receive at 431 the VCO will need to be at 431MHz-45MHz(1st IF) or 
> 386MHz. It was built to go from 395MHz to 440MHz. This may be below
what 
> the VCO will tune without adding some capacitance. First try adjusting 
> the trimmer capacitor to the lowest frequency you can. If this is above 
> 386MHz, you will need the extra capacitance to get the VCO into the 
> correct range. Look in your manual near the back at the parts list for 
> the VCO for the differences between range C and range D. There are a
few 
> capacitors and one resistor that are slightly larger on the D range.
You 
> can either parallel some small chip caps or replace the current ones 
> with the new values. The coaxial resonator is also longer, but as you 
> are only going down to 431 the current one may be long enough.
> 
> Try adding 1.5 pF across C7 on the RX VCO.
> 
> 
> Once the VCO is going, you may find the helicals need to be
lengthened also.
> 
> 
> Ed Yoho
> WA6RQD
>









 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hi Ed,

will try.

About the Helical-Filters, I saw that they have a low limit
of 430MHz, so they sould maybe do it. 

I'll keep you informed.

73
Bernd

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > ok, so far so good.
> > The RX-module won't work. The PLL don't lock, L1 voltage is low
> > (0,16V) and on TP12 I have about 433MHz (also near the VCO).
> > The TCXO is working ok.
> > 
> > 73
> > Bernd
> > DM5BM
> 
> To receive at 431 the VCO will need to be at 431MHz-45MHz(1st IF) or 
> 386MHz. It was built to go from 395MHz to 440MHz. This may be below
what 
> the VCO will tune without adding some capacitance. First try adjusting 
> the trimmer capacitor to the lowest frequency you can. If this is above 
> 386MHz, you will need the extra capacitance to get the VCO into the 
> correct range. Look in your manual near the back at the parts list for 
> the VCO for the differences between range C and range D. There are a
few 
> capacitors and one resistor that are slightly larger on the D range.
You 
> can either parallel some small chip caps or replace the current ones 
> with the new values. The coaxial resonator is also longer, but as you 
> are only going down to 431 the current one may be long enough.
> 
> Try adding 1.5 pF across C7 on the RX VCO.
> 
> 
> Once the VCO is going, you may find the helicals need to be
lengthened also.
> 
> 
> Ed Yoho
> WA6RQD
>









 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

ok, so far so good.
The RX-module won't work. The PLL don't lock, L1 voltage is low
(0,16V) and on TP12 I have about 433MHz (also near the VCO).
The TCXO is working ok.

73
Bernd
DM5BM

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > The TX module is working !!!
> > 
> > Ed, thanks a lot so far...
> > 
> > Now I'll go to the RX module.
> > 
> > 73
> > Bernd
> > 
> 
> Very cool...
> 
> 
> Ed Yoho
> WA6RQD
>








 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

ok, so far so good.
The RX-module won't work. The PLL don't lock, L1 voltage is low
and on TP12 I have about 20 Volts.

73
Bernd
DM5BM


--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > The TX module is working !!!
> > 
> > Ed, thanks a lot so far...
> > 
> > Now I'll go to the RX module.
> > 
> > 73
> > Bernd
> > 
> 
> Very cool...
> 
> 
> Ed Yoho
> WA6RQD
>








 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

The TX module is working !!!

Ed, thanks a lot so far...

Now I'll go to the RX module.

73
Bernd

--- In Repeater-Builder@yahoogroups.com, "Bernd Maestling"
<[EMAIL PROTECTED]> wrote:
>
> were's TP12 on the TX Module ?
> 
> 
> --- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]>
wrote:
> >
> > Bernd Maestling wrote:
> > > Hi again Ed,
> > > 
> > > I made a mistake. The voltage at L1 is not 5.2V, it's 0.52V (ugh)
> > > what means that the unit is unlocked.
> > > The other voltages at the test-points are ok (+/- 1V)
> > > I made all the tests on the 856 module.
> > > 
> > > 73
> > > Bernd
> > > 
> > 
> > OK, that makes more sense. Try adjusting the VCO trimmer so that your 
> > free running frequency is somewhere around 435. Then let off the PTT 
> > button and key it again. If you're lucky, it will lock. Watch the
> TP12 I 
> > mentioned earlier while turning the capacitor.
> > 
> > Note: if it does lock, you will be drawing more current, but will
> likely 
> > not be producing any power unless the frequency it was tuned to
before 
> > is within 10 megs (spec is 8 megs) or so of your new frequency. DO
not 
> > key it very long as the output will be way out of resonance. You
might 
> > even turn the output power control pot all the way down untill you
are 
> > sure what is going on.
> > 
> > Ed Yoho
> > WA6RQD
> >
>








 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

were's TP12 on the TX Module ?


--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hi again Ed,
> > 
> > I made a mistake. The voltage at L1 is not 5.2V, it's 0.52V (ugh)
> > what means that the unit is unlocked.
> > The other voltages at the test-points are ok (+/- 1V)
> > I made all the tests on the 856 module.
> > 
> > 73
> > Bernd
> > 
> 
> OK, that makes more sense. Try adjusting the VCO trimmer so that your 
> free running frequency is somewhere around 435. Then let off the PTT 
> button and key it again. If you're lucky, it will lock. Watch the
TP12 I 
> mentioned earlier while turning the capacitor.
> 
> Note: if it does lock, you will be drawing more current, but will
likely 
> not be producing any power unless the frequency it was tuned to before 
> is within 10 megs (spec is 8 megs) or so of your new frequency. DO not 
> key it very long as the output will be way out of resonance. You might 
> even turn the output power control pot all the way down untill you are 
> sure what is going on.
> 
> Ed Yoho
> WA6RQD
>









 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hi again Ed,

I made a mistake. The voltage at L1 is not 5.2V, it's 0.52V (ugh)
what means that the unit is unlocked.
The other voltages at the test-points are ok (+/- 1V)
I made all the tests on the 856 module.

73
Bernd


--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hm, 
> > 
> > the HEX file looks like yours. The 5.2V at L1 don't change
> > when I rotate the capacitor, so I think there must be
> > something unlocked or wrong. The only thing that is changing 
> > is the red LED on the front going to light in TX mode and the
> > current increases from 0.1A to 0.3A.
> > 
> > With my counter I can measure frequencies between 400 and 500MHz
> > at the measuring point in the first stage. It will change when
> > I rotate the capacitor.
> > 
> > 73
> > Bernd
> > 
> 
> Bernd,
> 
> The TX should draw much more than 300 mA when in TX. If the synthesizer 
> is not locked, the output section will be disabled to prevent 
> transmitting off channel. Not sure how the voltage is staying at
5.2V if 
> it is unlocked. Try flipping DIP switch 8 to off and power the T856 off 
> and on again. Check TP12 (VCO Lock Detect). It should be low if the 
> synthesizer is in lock.
> 
> Do you have the manuals?
> Is your TCXO 12.8MHz?
> 
> Ed Yoho
> WA6RQD
>









 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hello Kevin,

thanks anyway...maybe if my unit is still not running in
a few weeks I'll contact you again ;-)

73
Bernd
DM5BM


--- In Repeater-Builder@yahoogroups.com, "Kevin & Natalia"
<[EMAIL PROTECTED]> wrote:
>
> Bernd,
> 
> I have to apologise. When I made the offer to do a program for you, I 
> thought I had my DOS computer, and the software here, at home.
> However when I went to get it, I found that I had packed it all away
for our 
> up-and-coming house move (in just over 2 weeks)
> Sorry about that.
> I do, however see others helping you out, so you should get some
results.
> 
> Regards
> 
> Kevin, ZL1KFM.
> 
> - Original Message - 
> From: "Bernd Maestling" <[EMAIL PROTECTED]>
> To: 
> Sent: Thursday, November 24, 2005 12:52 PM
> Subject: [Repeater-Builder] Re: Help Tait T800 series 1 programming
> 
> 
> > Hello Kevin,
> >
> > yes a file would be great. I need TX: 439.3875 and RX: 431.7875
> > Today I saw a picture of another T855 but it was different inside.
> > The PCB were the DIP Switch and eprom is located is much bigger
> > in my unit, maybe because of the additional channel switching
> > speaker module.
> >
> > 73
> > Bernd
> > DM5BM
> >
> >
> > --- In Repeater-Builder@yahoogroups.com, "Kevin & Natalia"
> > <[EMAIL PROTECTED]> wrote:
> >>
> >> Bernd,
> >>
> >> I have the Tait T-800 series 1 software here, and I can check and
> > send you a
> >> file of your freq's required.
> >> I have a T-800, which I reprogrammed a number of years ago, and did
> > not have
> >> any problems.
> >> If there are any problems, I can always make a phone call to Tait,
> > as there
> >> are home based here in NZ.
> >>
> >> Regards
> >>
> >> Kevin. ZL1KFM.
> >>
>








 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hi Ed,

yes, the TCXO is 12.8MHz and I have the service manual,
but as I don't know if my programming is correct I don't
know if it make much sense to check some points but I'll
do later.

I also ordered a few new eproms, maybe they are old and
sometimes not completely empty after erasing. 

The crazy thing is, I cant run neither the TX nor the RX
unit.

73
Bernd
DM5BM

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hm, 
> > 
> > the HEX file looks like yours. The 5.2V at L1 don't change
> > when I rotate the capacitor, so I think there must be
> > something unlocked or wrong. The only thing that is changing 
> > is the red LED on the front going to light in TX mode and the
> > current increases from 0.1A to 0.3A.
> > 
> > With my counter I can measure frequencies between 400 and 500MHz
> > at the measuring point in the first stage. It will change when
> > I rotate the capacitor.
> > 
> > 73
> > Bernd
> > 
> 
> Bernd,
> 
> The TX should draw much more than 300 mA when in TX. If the synthesizer 
> is not locked, the output section will be disabled to prevent 
> transmitting off channel. Not sure how the voltage is staying at
5.2V if 
> it is unlocked. Try flipping DIP switch 8 to off and power the T856 off 
> and on again. Check TP12 (VCO Lock Detect). It should be low if the 
> synthesizer is in lock.
> 
> Do you have the manuals?
> Is your TCXO 12.8MHz?
> 
> Ed Yoho
> WA6RQD
>








 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hm, 

the HEX file looks like yours. The 5.2V at L1 don't change
when I rotate the capacitor, so I think there must be
something unlocked or wrong. The only thing that is changing 
is the red LED on the front going to light in TX mode and the
current increases from 0.1A to 0.3A.

With my counter I can measure frequencies between 400 and 500MHz
at the measuring point in the first stage. It will change when
I rotate the capacitor.

73
Bernd

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > ok, nothing worked. I checked the VCO and the voltage
> > is always at 5.2V also when I change the value.
> > 
> > I think there's maybe something wrong with the
> > eprom programming. When I create a HEX or a BIN file
> > with the same datas, they look different in my 
> > programmer software (hex = intel hex).
> > 
> > As I said before, I use 27C64 eproms, so I think I have
> > to switch of switch 8 of the DIP-switch. In my units
> > there is the T800-07 memory board installed for switching
> > the cannels via the TS0089 panel. Is there something I
> > have to look for with this board ?
> > 
> > 73
> > Bernd
> > DM5BM
> > 
> 
> Bernd,
> 
> If you are seeing 5.2V at the top of L1 on the VCO board the VCO is 
> locked on a channel. If it were not, it would either be at near 0V or 
> 19V. If you want to select a channel with the DIP switch, disconnect
the 
> cable from the PROM board going to the rear panel and set all switches 
> on. This will set the board to internal frequency select and channel 
> zero (first channel programmed in the software). To select channel one 
> (second channel programmed), set switch one on the DIP switch off. If 
> switch 8 is off, the internal DIP switch is disabled.
> 
> The T856 TX PROM code for 439.3875 is:
> 04 09 28 2F 00 08 00 00
> 
> The T855 RX PROM code for 431.7875 is:
> 0C 0A 26 2F 00 00 00 01
> 
> The T856 TX generated hex file line one for 439.3875 is:
> :1409282F0008202054
> 
> The T855 RX generated hex file line one for 431.7875 is:
> :1C0A262F0001202054
> 
> Note the actual channel data starts at the fifth byte location in the 
> file with two channels per line of data.
> 
> The above data is also based upon using a 12.8 MHz reference oscillator 
> (under the PROM daughter board) and a 12.5KHz reference frequency 
> (selected in the programming software).
> 
> Load your programmer with the T800 generated hex code and see if the 
> first eight bytes agree with the above values. If not, choose another 
> format and reload.
>









 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

ok, nothing worked. I checked the VCO and the voltage
is always at 5.2V also when I change the value.

I think there's maybe something wrong with the
eprom programming. When I create a HEX or a BIN file
with the same datas, they look different in my 
programmer software (hex = intel hex).

As I said before, I use 27C64 eproms, so I think I have
to switch of switch 8 of the DIP-switch. In my units
there is the T800-07 memory board installed for switching
the cannels via the TS0089 panel. Is there something I
have to look for with this board ?

73
Bernd
DM5BM


--- In Repeater-Builder@yahoogroups.com, "Bernd Maestling"
<[EMAIL PROTECTED]> wrote:
>
> Thanks Ed, I'll try later.
> 
> I can also program with -20 modules the right channels.
> The software is giving up a warning about frequencies
> but it'll generate the files anyway. 
> 
> 73
> Bernd
> 
> --- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]>
wrote:
> >
> > Bernd Maestling wrote:
> > > Hello,
> > > I hope somebody can help my cause I'm getting nuts
> > > with programming a Tait series I repeater.
> > > 
> > > I programmed a few dozend times the 27C64 eproms but
> > > nothing works. The software I use is PGM800 for DOS
> > > and also v4.x for Windows. My programmer can program
> > > BIN files ok, cause I already programmed NOKIA/Kyodo 
> > > BSR450 repeaters in the past.
> > > 
> > > The setup of my TAIT is: 
> > > RX: T855-20
> > > TX: T856-20
> > > speaker and channel switch TS0089 (but I use the DIP 
> > > switches in the modules by disconnecting the cables)
> > > 
> > > I want to programm the modules for somewere between
> > > 431 and 439 MHz. As I saw, the -20 and -15 modules
> > > are mostly identical, also are the produced files.
> > > 
> > > I hope someone can help me.
> > > 
> > > 73
> > > Bernd
> > > DM5BM
> > > 
> > 
> > Bernd,
> > 
> > The T855-20 and T856-20 are designed for 440 to 480 MHz. To use them 
> > below 440 you will need to tell PGM800 you have a T855-10 and T856-10 
> > (400-440). I would suggest saving the file in HEX (not bin) format to 
> > allow you to compare the saved file with what is being loaded into
your 
> > PROM burner's RAM.
> > 
> > 
> > Once you have programed the PROMs, you will need to adjust the VCO
trim 
> > capacitor down enough to get the PLL to lock (monitor the top end
of L1 
> > on the VCO boards with a voltmeter and adjust for something around 9 
> > volts). If you have not re-adjusted the VCOs, nothing will work when
> you 
> > are moving frequencies as much as you are trying to do.
> > 
> > 
> > Ed Yoho
> > WA6RQD
> >
>








 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Thanks Ed, I'll try later.

I can also program with -20 modules the right channels.
The software is giving up a warning about frequencies
but it'll generate the files anyway. 

73
Bernd

--- In Repeater-Builder@yahoogroups.com, wa6rqd <[EMAIL PROTECTED]> wrote:
>
> Bernd Maestling wrote:
> > Hello,
> > I hope somebody can help my cause I'm getting nuts
> > with programming a Tait series I repeater.
> > 
> > I programmed a few dozend times the 27C64 eproms but
> > nothing works. The software I use is PGM800 for DOS
> > and also v4.x for Windows. My programmer can program
> > BIN files ok, cause I already programmed NOKIA/Kyodo 
> > BSR450 repeaters in the past.
> > 
> > The setup of my TAIT is: 
> > RX: T855-20
> > TX: T856-20
> > speaker and channel switch TS0089 (but I use the DIP 
> > switches in the modules by disconnecting the cables)
> > 
> > I want to programm the modules for somewere between
> > 431 and 439 MHz. As I saw, the -20 and -15 modules
> > are mostly identical, also are the produced files.
> > 
> > I hope someone can help me.
> > 
> > 73
> > Bernd
> > DM5BM
> > 
> 
> Bernd,
> 
> The T855-20 and T856-20 are designed for 440 to 480 MHz. To use them 
> below 440 you will need to tell PGM800 you have a T855-10 and T856-10 
> (400-440). I would suggest saving the file in HEX (not bin) format to 
> allow you to compare the saved file with what is being loaded into your 
> PROM burner's RAM.
> 
> 
> Once you have programed the PROMs, you will need to adjust the VCO trim 
> capacitor down enough to get the PLL to lock (monitor the top end of L1 
> on the VCO boards with a voltmeter and adjust for something around 9 
> volts). If you have not re-adjusted the VCOs, nothing will work when
you 
> are moving frequencies as much as you are trying to do.
> 
> 
> Ed Yoho
> WA6RQD
>








 
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[Repeater-Builder] Re: Help Tait T800 series 1 programming

[Bernd Maestling]

Hello Kevin,

yes a file would be great. I need TX: 439.3875 and RX: 431.7875
Today I saw a picture of another T855 but it was different inside.
The PCB were the DIP Switch and eprom is located is much bigger
in my unit, maybe because of the additional channel switching
speaker module.

73
Bernd
DM5BM


--- In Repeater-Builder@yahoogroups.com, "Kevin & Natalia"
<[EMAIL PROTECTED]> wrote:
>
> Bernd,
> 
> I have the Tait T-800 series 1 software here, and I can check and
send you a 
> file of your freq's required.
> I have a T-800, which I reprogrammed a number of years ago, and did
not have 
> any problems.
> If there are any problems, I can always make a phone call to Tait,
as there 
> are home based here in NZ.
> 
> Regards
> 
> Kevin. ZL1KFM.
> 
> - Original Message - 
> From: "Bernd Maestling" <[EMAIL PROTECTED]>
> To: 
> Sent: Thursday, November 24, 2005 12:26 PM
> Subject: [Repeater-Builder] Help Tait T800 series 1 programming
> 
> 
> > Hello,
> > I hope somebody can help my cause I'm getting nuts
> > with programming a Tait series I repeater.
> >
> > I programmed a few dozend times the 27C64 eproms but
> > nothing works. The software I use is PGM800 for DOS
> > and also v4.x for Windows. My programmer can program
> > BIN files ok, cause I already programmed NOKIA/Kyodo
> > BSR450 repeaters in the past.
> >
> > The setup of my TAIT is:
> > RX: T855-20
> > TX: T856-20
> > speaker and channel switch TS0089 (but I use the DIP
> > switches in the modules by disconnecting the cables)
> >
> > I want to programm the modules for somewere between
> > 431 and 439 MHz. As I saw, the -20 and -15 modules
> > are mostly identical, also are the produced files.
> >
> > I hope someone can help me.
> >
> > 73
> > Bernd
> > DM5BM
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>








 
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[Repeater-Builder] Help Tait T800 series 1 programming

[Bernd Maestling]

Hello,
I hope somebody can help my cause I'm getting nuts
with programming a Tait series I repeater.

I programmed a few dozend times the 27C64 eproms but
nothing works. The software I use is PGM800 for DOS
and also v4.x for Windows. My programmer can program
BIN files ok, cause I already programmed NOKIA/Kyodo 
BSR450 repeaters in the past.

The setup of my TAIT is: 
RX: T855-20
TX: T856-20
speaker and channel switch TS0089 (but I use the DIP 
switches in the modules by disconnecting the cables)

I want to programm the modules for somewere between
431 and 439 MHz. As I saw, the -20 and -15 modules
are mostly identical, also are the produced files.

I hope someone can help me.

73
Bernd
DM5BM











 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

<*> Your use of Yahoo! Groups is subject to:
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