Re: [Repeater-Builder] Need Tait800 UHF Slimline Documentation Programming
Paul Metzger wrote: It is a T800 Series 1 Slimline which requires the PROMs to be programmed. I need documentation, software, and to find out what hardware (exact models) I will need to acquire in order to program the proms, including cables. All it has is a single rack panel with a T855-20 Receiver, T856-20 Exciter/Amplifier and a terminal strip attached. It has a date on it of October 1996. I need documentation in order to find out how to interface it to a homebrew controller, which will then tie into an AOR Digital Voice modem. I hope to make it into a repeater for the Digital Voice Amateur Radio Association. Any help will be much appreciated ! Thanks ! Paul Metzger KQ6EH Paul, Unless the frequency you are planning to use is a multiple of 100KHz, the Tait Software wont work in southern California (SCRRBA area) as it cannot generate anything except 12.5 or 25 KHz channels and we use 20KHz channels. You will need to find an EPROM eraser and programmer that can program the EPROMS within your units. The formulas for generating the hex values required are (hopefully this will be readable once posted): WORD1 2 3 4 5 6 7 8 REG M M M A A R R R BIT L 0 2 6 0 4 0 4 8 BIT M 1 5 9 3 6 3 7 10 | | | | | | | | M A CH #| | | | | | | |TX FREF=200KHz 0 08 0E 0A 0E 00 0A 00 00698 14 446.860 TX USING 10 KHZ STEPS 1 08 0E 0A 00 01 0A 00 00698 16 446.880 TX USING 10 KHZ STEPS RX FREF=6.4MHz 0 00 0B 09 06 00 00 04 01620 06 441.860 RX USING 10 KHZ STEPS 1 0C 0A 09 08 00 00 04 01620 08 441.880 RX USING 10 KHZ STEPS TX FREQ(MHz) = M * 0.64 + A * 0.01 RX FREQ(MHz) = M * 0.64 + A * 0.01 + 45 Here is the pinout for a stock 855rx and 856tx: pin 855 856 1 line out 1 line in 1 2 line out 2 line in 2 3 line out 3 line in 3 4 line out 4 line in 4 5 RSSITX Enable 6 Audio 1 Audio 2 7 Audio 2 Audio 1 8 Speaker CTCSS 9 +13V+13V 10 +13V+13V 11 Gate/COS outOpto-key + 12 COR 1 Opto-key - 13 COR 2 TX key / PTT 14 Ground Ground 15 Ground Ground You will need to locate a manual for the T855 T856 as there are many possible internal configurations possible due to multiple internal jumpers. If anyone has the manuals in PDF form, I do not know of them. Ed Yoho WA6RQD
[Repeater-Builder] Need Tait800 UHF Slimline Documentation Programming
Anyone able to help me with manuals for a Tait800 Slimline UHF (T855-20 and T856-20). I also need to find out how to program it and what is required to do so. I appreciate any help, Thanks ! Paul MEtzger KQ6EH
Re: [Repeater-Builder] Need Tait800 UHF Slimline Documentation Programming
Paul Metzger wrote: Anyone able to help me with manuals for a Tait800 Slimline UHF (T855-20 and T856-20). I also need to find out how to program it and what is required to do so. I appreciate any help, Thanks ! Paul MEtzger KQ6EH Paul, There are two versions of the Tait T800s. Series I and Series II. Series I use PROMs for channel information and Series II use EEPROMs. The older version needs a PROM programmer and the newer version just needs the correct software and a serial interface cable. The newer version's documentation is available in PDF form, but AFAIK, the older is only available in printed form. If you are unsure as to which version you have, remove the top cover and look just forward of where the DB15 is. If there is a 28 pin DIP on a small daughter board, they are series I. If you are going to use these in southern California, due to the 20 KHz channel spacing, if they are series I you will need to use a hex editor to generate your EPROM files as the factory software did not support 20 KHz (only 12.5 25 KHz). Ed Yoho WA6RQD
[Repeater-Builder] Need Tait800 UHF Slimline Documentation Programming
It is a T800 Series 1 Slimline which requires the PROMs to be programmed. I need documentation, software, and to find out what hardware (exact models) I will need to acquire in order to program the proms, including cables. All it has is a single rack panel with a T855-20 Receiver, T856-20 Exciter/Amplifier and a terminal strip attached. It has a date on it of October 1996. I need documentation in order to find out how to interface it to a homebrew controller, which will then tie into an AOR Digital Voice modem. I hope to make it into a repeater for the Digital Voice Amateur Radio Association. Any help will be much appreciated ! Thanks ! Paul Metzger KQ6EH -- Paul, There are two versions of the Tait T800s. Series I and Series II. Series I use PROMs for channel information and Series II use EEPROMs. The older version needs a PROM programmer and the newer version just needs the correct software and a serial interface cable. The newer version's documentation is available in PDF form, but AFAIK, the older is only available in printed form. Ed Yoho WA6RQD
