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Tait TB7100 Rx Heatsink

 

Hi all,
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Has anyone got a picture of the heatsink that goes under the Rx radio in a TB7100?
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I've added some photos of how it looks on a TM81XX
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Thanks
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Re: DeskTrac Repeater

 

Remember that radios of this vintage require an old, slow DOS computer, or the system won't talk properly.? I use a Compaq 386 "lunchbox" computer that is native DOS (and works just dandy on Desktracs), so I can't comment specifically on your setup, but make sure it's running slow.
The switch on the Desktrac selects whether you are programming (1) the main radio, (2) the repeater radio, or (3) the remote panel.?
As I recall, the procedure is to use the Maxtrac software to program the radios, then go back and use the special Desktrac software to finish up.
For what it's worth, Desktracs seem to all have their own firmware version (V5.36).
Also don't forget that if you are going out of the original frequency range, you will need the modified ham firmware or power out and deviation will be unpredictable.? Details on this are found in the Ham Friendly Firmware articles in the Maxtrac area here on Repeater-Builder, or you could email me.
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Good luck - Kurt
Re: DeskTrac Repeater

 

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I don't recall all the details, but the desktrac's were a pain in the a.?
You probably need the progamming manual.?? As I recall, there is a rotary switch that depending on which part of the desktrac you had to select a portion of the unit.
i.e.? one position was to program the control head, one position was to program the rf/radio, one position was to program the dc or tone remote functions.???? All of this is from my memory of programming units in the GM300/Radius conventional units 20 years ago or more.?

Regards
Chuck? n0nhj
Glenwood Springs, CO

On 4/15/2025 12:31, KK7GKG via groups.io wrote:
Hello All.
I am having issues programming a VHF DeskTrac Repeater and wanted some insights
I've built close to 8 Different Cables all listed as "DeskTrac"or"MaxTrac" and I have not been able to get it to program
I am using a RIB Box and switching the Blue 1, 2, and 3 switch on the DeskTrac
the PC is running Windows XP With DosBox with the serial port Forwarded to Serial 1 (an actual Serial Port on the Laptop)
sometimes the Data light will blink then start rapidly blinking but after like 1/2 a Second it just sits there with nothing and blinks every 1/2 - 1/4 of a second then the software goes Cannot read Data




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Re: Yaesu fusion scu 20 for fusion

 

It is a programming cable to update the firmware thanks



On Tuesday, April 15, 2025, 11:08 AM, Jack Mcelyea/n4jem via groups.io <n4jem@...> wrote:

Looking for Yaesu scu 20 for fusion if anyone has one for sale ?thanks n4jem
MTR-2000 losing it's memory/settings when powered down?

 

All,

Have a nice UHF MTR-2000 40w we are looking to use for 44 ham usage.

Starting from a clean default profile, it programs up perfectly and will operate perfectly.

But if powered down, TX audio & CW ID are way down, etc. It's like it's losing settings.

Reload the codeplug and it's back in business.

Test menu every thing works perfectly, including deviation.

I'm wondering if it's go an issue like the quantars with worn out non-volatile memory (EEPROM, E2PROM, or similar).

Anyone dealt with this before? Any suggestions appreciated. This repeater is otherwise very nice and hears extremely well.

Thanks in advance,
Alan Barrow
KM4BA
Looking for MSF 5000 Secure Capable Station Control Board TLN 3043B0818K

 

Looking for a Secure Capable Station Control Board for a UHF 100w MSF 5000, had an SCR smoke. Was also dealing with some occasional noise on the TX.

TLN 3043B0818K.

Any options would be welcome, and if you have the entire MSF5000 of similar model we might be interested in some other parts.

Thanks,
Alan Barrow
KM4BA
DeskTrac Repeater

 

Hello All.
I am having issues programming a VHF DeskTrac Repeater and wanted some insights
I've built close to 8 Different Cables all listed as "DeskTrac"or"MaxTrac" and I have not been able to get it to program
I am using a RIB Box and switching the Blue 1, 2, and 3 switch on the DeskTrac
the PC is running Windows XP With DosBox with the serial port Forwarded to Serial 1 (an actual Serial Port on the Laptop)
sometimes the Data light will blink then start rapidly blinking but after like 1/2 a Second it just sits there with nothing and blinks every 1/2 - 1/4 of a second then the software goes Cannot read Data
Kenwood D710 No audio on Aux port

 

I had a TKR 750 working on a RLC 3 Controller. I bought a New TKR D710 and hooked it up to the same cable and configured?the D710 just about Identical?to the TKR 750. If I let the Repeaters?internal controller control the Repeater I get normal Audio out of the repeater but when I turn off the Repeat enable and let the RLC control it I get PTT on the D710 but no Audio just Carrier I also have TKR 850? on another Port it will key up but no Audio and if I talk into the TKR 850 it repeats fine out of it but the D710 Transmits but no Audio out.
I have Aux In/Out 4 Set to Encode Signaling Enable, Aux Out 5 COR Active Low and Aux In/Out 6 TOR Active Low.

Ted McArthur
435-770-9169
Callsigns
AC7II _ Amateur
D-451_Cache County Ecomm
59-A-40_State of Utah DEM
WRJH-604_General Mobile Radio Service
Re: Wacom WP-678 Cable lengths

 

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It is the one port version.?

TNX jim.?

On Apr 15, 2025, at 6:48?AM, Jeff DePolo WN3A via groups.io <jd0@...> wrote:

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  • I have a Wacom WP-678 that is missing the interconnect cables.?
  • ?

Is it a WP-678-R2 (two ports per cavity) or an original WP-678 (one port per cavity with a tee on top)?

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??????????????????????????????????????????????????????????????????????????????? --- Jeff WN3A
Yaesu fusion scu 20 for fusion

 

Looking for Yaesu scu 20 for fusion if anyone has one for sale ?thanks n4jem
Re: Wacom WP-678 Cable lengths

 

Jeff,?

I have a Wacom WP-678 with single Type N per cavity, originally tuned by factory on 454 Tx 459 Rx.
Interconnect cable seem to be only about 3" long.? It's working on a RKR-1225 90 watt repeater, (444.900) so, it may be close.
If you have further details on the cable lengths for 444 MHz area, that would be great.

Dan K5FVL
**

------ Original Message ------
From "Jeff DePolo WN3A via groups.io" <jd0@...>
Date 04/15/25 8:48:23 AM
Subject Re: [repeater-builder] Wacom WP-678 Cable lengths

  • I have a Wacom WP-678 that is missing the interconnect cables.?
  • ?

Is it a WP-678-R2 (two ports per cavity) or an original WP-678 (one port per cavity with a tee on top)?

?

??????????????????????????????????????????????????????????????????????????????? --- Jeff WN3A
Re: Wacom WP-678 Cable lengths

 

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  • I have a Wacom WP-678 that is missing the interconnect cables.?
  • ?

Is it a WP-678-R2 (two ports per cavity) or an original WP-678 (one port per cavity with a tee on top)?

?

??????????????????????????????????????????????????????????????????????????????? --- Jeff WN3A
Re: Swap: Ics controllers quantar 1x for a northcomm quantar ecm.

 

O may be able to help you out in your request. I have that plug and play controller. NASA courtesy time is nice and the repeater itself will ID.?
Re: General Dynamics R2600 Resouce CD Not Connecting

 

Make sure that the communications analyzer is turned off until you are told to turn it on. Confirm the
analyzer has completed startup before continuing with downloads. You can set communications parameters on
the analyzer, but this should not be necessary, since holding the F1 key and waiting for four beeps sets the
analyzer to 115200 bps, 8 data bits, 1 stop bit, no parity with Xon/Xoff handshaking.
It is very important that you perform the analyzer startup properly. First, press and hold the F1 key on the
analyzer. Then, turn on the analyzer and you will hear an immediate beep. Wait until you hear three beeps
together in rapid succession and release the F1 key. At this point, the analyzer has begun to communicate with
the PC
Re: General Dynamics R2600 Resouce CD Not Connecting

 

Re: Manual CDM Low-Band

 

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Thank you Mike, Jeff and Tim for all the info.

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Now I know that the normal output power is 60 Watts not 90 W like now.

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I will look at this manual to find the problem with my 1250 control head.

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At this point I don’t know if the problem is created by the radio not suppling the correct voltage to the control heads.

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Or if the problem is in the control head.

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To be followed.

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Best 73

Carl

VA2CMB

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De?: [email protected] [mailto:[email protected]] De la part de M M via groups.io
贰苍惫辞测é?: 14 avril 2025 02:17
??: [email protected]
Objet?: Re: [repeater-builder] Manual CDM Low-Band

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I forgot to say that the 6881091C63 Detailed Service Manual covers low band, high band and UHF...

everything but the narrowband-only "200" and "700" MHz CDMs.?? They have their own manual.

Mike WA6ILQ

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Tait TB7100 VHF,Hard reset and config file!!

 

hello everyone,
well i am thinking of doing an Hard reset,,,or Factory rest for my VHF Low Split repeater.It was used on a commercial site so it must have some "special setup" so i am looking for the 2 files,The RX and the TX file of a working repeater,i would need only to change for my frequency!
maybe someone could share it with me!
i will appreciate the help,
Tait are not known very much here ,we are in Motorola and Kenwook land!!!
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thanks a lot.
73/s
Gervais,ve2ckn
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Wacom WP-678 Cable lengths

 

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I am building a Duplexer for a GMRS repeater.? I have a Wacom WP-678 that is missing the interconnect cables.? I did a little search hoping I could find some documentation on the lengths for cutting new ones.? 462/467 split.? Anyone know these off the top of their head, or have a chart somewhere?

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TNX Jim

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Sent from


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Re: MTR2000 UHF Low Band

 

He has the range 1 which won’t go above 438. You can modify them. It might just be the resistive divider to tell the controller what it is but you might run out of vco range at some point. Been about five years since I tried this, memory hazy and ad usual I didn’t document any of what I did?
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georgec w2db?
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Re: Tait TB7100 Vhf connection to the RB-USB RIM "Lite"!

 

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hummm

many email ago someone tolded me that i add to used a Jumper on the repeater board when you are in "programmation" ,,,anyone remember what was that jumper???

i am still searching where is that DB25 pinout in the software!!!

i am almost ok,,,i have tx and audio when Allstar is starting but i am not heard by the Allstar audio,,,


gervais,,

De : [email protected] <[email protected]> de la part de Gervais Fillion via groups.io <ve2ckn2@...>
Envoyé : 13 avril 2025 19:38
? : [email protected] <[email protected]>
Objet : [repeater-builder] Tait TB7100 Vhf connection to the RB-USB RIM "Lite"!
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Hello everyone,
i am trying to programm my TB7100 Vhf to worked with Scott RB-USB RIM "Lite".
Anyone has done it and if so maybe he could share the file of this repeater or
just a picture where i should go to set it up!

i am almost ok,my AllStar 2.0 is transmetting but it does not hear me but first i need to be sure the Tait is ok!

thanks in adavance for your help,
it will replace a simplex node here.

73/s
Gervais,ve2ckn
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