[Repeater-Builder] Micor Stuff
I have the following Micor stuff available for pickup near San Jose in California--and at the right price tooall free. Two TPN1110B power supplies One TRC1052AB receiver One TTC1041BA transmitterI think that it was on 75.64 mhz. Two matching control chassis with some modulesribbon cable style All the above was said to be operational when it came to me and it has been in dry storage ever since. And, there was a Motorola 1D83000E, PN# 80D103 "black box" in with the above--about 2.5" X 6" X 1.5"-two rows of solder terminals on one side ---one row labeled IN and the other OUT with 100, 200, 300 etc. labeled to the side. What is this assembly? --and direct email off the list would be fine ---Thanks Scott
[Repeater-Builder] Icom FR3000 "External Mod B"
I'm setting up an Icom FR3000 and would like to use the "External Mod B Input" (pin 9 on the 25 pin connector) to inject audio from another receiver's discriminator into the transmit path after pre-emphasis so that it's not preemphasized twice. I can inject a signal onto Pin 10, which injects the signal before the preemphesis circuit, and it works just fine. However, no matter what I put on pin 9 I seem to get an unmodulated carrier when PTT is activated. I've looked over the service manual in detail and can't figure out what I'm doing wrong. The jumpers on the board seem be placed correctly for the signal path I want. Has anyone used Pin 9? Any ideas what I might be doing wrong? Thanks in advance, Andy
[Repeater-Builder] for sale: 420 MHz linking radios, voter
Over the past two decades I've been accumulating gear to link all my repeaters together. But as I posted a few weeks back, I'm now linking everything with VoIP. There's at least three generations of equipment listed below, and I need to clear out the entire inventory in order to make space and help fund future repeater system development. Please make offers, equipment is located near Santa Cruz, CA: Hamtronics: 1 REP-200N 10 watt repeater w/no controller, type N connectors. RX is 441 MHz, TX is 420 MHz. 6 R304-2 UHF synthesized receiver, wired and tested, mounted in A89 enclosure 3 T304-2 UHF synthesized exciter, wired and tested, mounted in A88 enclosure Yaesu/Vertex: 1 Rare UHF-Low VXR-5000 repeater (40H259J) (spec for 400-420 MHz) w/internal AC power supply Icom: 40+ F420-9 403-430 MHz 32-channel mobile radio (25 in good condition, others have various issues, mostly display problems. Also have 16 custom cables to access internal connector discriminator audio + COS for use as link receiver, 8 custom cables to access internal connector TX audio + PTT for use as link transmitter. GE: 12+ Mastr Exec low-power full-duplex mobiles, "77" range (SX55FAS77A) with internal mobile duplexer Misc spare control heads, high-power Mastr Exec PAs, etc. LDG: 1 RVS-8 repeater voter Com-Spec: Handful of TS-64 CTCSS Encoder/Decoder 1 TP-3200 repeater tone panel (rack-mount) Motorola: 2+ Micor UHF mobile, converted to duplex repeater operation Matthew Kaufman matt...@matthew.at
[Repeater-Builder] Re: TKR-720 Programming - Bit Pattern in EEPROM
DcFlux - Got the board & software working great. Changed the values & we're up & running. Thanks again, Tim W5FN --- In Repeater-Builder@yahoogroups.com, DCFluX wrote: > > > Another land mine is when people short out the mic plug > > with some type of alien device or a bad mic. The KPT-50 > > receives its operating supply (voltage) via the mic jack. > > If someone has hosed up (shorted) the mic jack source you > > won't see the KPT-50 power up. Many times that's a resistor > > or fuse fix depending on which board you have. > > The last one our group got actually had that problem, no +5 on the > programming plug and I traced it back to the blown resistor, I think > it was 47ohm at 1/2W. >
Re: [Repeater-Builder] Re: TKR-720 Programming - Bit Pattern in EEPROM
> Another land mine is when people short out the mic plug > with some type of alien device or a bad mic. The KPT-50 > receives its operating supply (voltage) via the mic jack. > If someone has hosed up (shorted) the mic jack source you > won't see the KPT-50 power up. Many times that's a resistor > or fuse fix depending on which board you have. The last one our group got actually had that problem, no +5 on the programming plug and I traced it back to the blown resistor, I think it was 47ohm at 1/2W.
[Repeater-Builder] Re: TKR-720 Programming - Bit Pattern in EEPROM
Wow, I'm a Kenwood Dealer with lots of TKR-720 and TKR-820 information and I plan to archive the below information. I use the KPT-50 (I also have a kpt-20 & kpt-10) to reprogram tkr-x20 and tkb-x20 (repeater and base station unit... plus the mobile radios). It's a great idea to find and use the DOS KPT-21d software (I'll give copies of it out for free if you can't find it on the web easy enough) with the programmer, making life much more practical in regards to being able to save your Frequency and Signaling Data files on your computer. The KPT-50 slaves right off a common serial port. I keep new and use KPT-50 units in stock, but they are not cheap (near the $200 mark). If you live close enough to drive over to my shop, I'll reprogram your radio or repeater(s) for free (I'm near Sacramento, CA.). The EEprom for the signaling board is easily enough removed from the repeater board (it's in a socket). I have some EEprom files saved with a number of CTCSS and DCS codes installed. Remember, the encoder - decoder module will work with any combination of up to 8 codes by changing one simple jumper on the board. If you don't have the jumper properly configured... the first code becomes the only enabled one allowed, which is how I believe the board is configured from the factory. Changing the encoder - decoder board jumper enables an 8 user community repeater (multi tone/code) operation. The frequency EEprom has to be removed from the board as indicated below. Another land mine is when people short out the mic plug with some type of alien device or a bad mic. The KPT-50 receives its operating supply (voltage) via the mic jack. If someone has hosed up (shorted) the mic jack source you won't see the KPT-50 power up. Many times that's a resistor or fuse fix depending on which board you have. I can write and configure some CTCSS schemes for people as time allows. If you want an 8 code template already made I have it saved as a file using Pony-Pro and a very nice, low cost EEprom Programmer I bought cheap off Ebay. cheers, skipp > DCFluX wrote: > > Brute Force Hacking the TKR-820 / 720 Series > > Hey, these make great little repeaters. They also are becoming fairly > common on the surplus market as companies are caving into the idea > that digital cellular is a better alternative to NBFM. Well anyway I > am sure you bought one for cheap or acquired one by some other means > with the thoughts that you could drag it into the ham band. > > So lets begin. First lets make sure the repeater works. Start by > connecting a watt meter with dummy load to the TX port (Or the antenna > port on models with the built in duplexer). Use the 25W 200-500 or > 400-1000 slug are the closest thing you have. Loosen the squelch until > the repeater goes into transmit mode, remember to press the repeat > button on the front panel. Won't do it? Turn the unit off pull the > covers and remove the 93C46 EEPROM from the controller board (This is > the little board that is about 3X5 and sits above the radio chassis'). > This sets the DPL/PL combination and without it the repeater will > activate on COS. Turn it back on and it should repeat. Got RF power? > Good. Set this little bastard aside as we will deal with him later. > > Next step is to take write down the voltage on the from the test > points besides the VCOs. The VCOs are located under the metal tray > that the controller sits on. This should be some where around 4 volts > DC. > > Now we have to come up with a way to change the data that sets the > frequency of the repeater. For some reason the chip that does this is > on the circuit board on the front panel of the repeater. > > I was originally told that "Either a KPT-20 or KPT-50 is need to > program those. No way around it." That sounds like a wager to me. Sure > if you have a Kenwood dealer around that you can borrow one from or > willing to spend more than you bought the repeater for this is a sure > fire method. Oh, you will also need the KPG-21D software, but it will > not allow operation into the ham bands and has some serious > compatibility issues running on modern hardware. > > Unsolder the 93C46 EEPROM from the front panel board. Use what ever > method you like, I prefer my trusty static free Soldapult. Be careful > not to rip and leads off the package when removing it. Place an 8 pin > DIP socket in the hole that you got the EEPROM out of and solder it > down. > > Now we get the data out of the chip. I built a serial port to EEPROM > interface found here: http://www.lancos.com/e2p/siprog_base.png and > http://www.lancos.com/e2p/si-prog-v2_2.pdf in order to be used with > the device programming software "Pony Prog" > http://www.lancos.com/prog.html. You have to build the base board and > then the socket for the device you wish to program. I replaced the > LM2936Z-5 in the schematics with a 5.1 V Zener diode fed with a 330 > ohm resistor to generate the +5 needed, an
[Repeater-Builder] Re: TKR-720 Programming - Bit Pattern in EEPROM
Tim, the easiest thing to create the binary images for the TKR/B-x20 radios, is to use the KPG21D software.. The file saved by KPG21D contains both binary images (Freq. & CTCSS).. The 1st 128 bytes of the file is the freq. data and the 2nd 128 bytes of the file is the CTCSS data.. With a binary/Hex editor, you should be able to create either file image (FReq. / CTCSS) by deleting the data you don't need from the .R7N file.. -73, Pete N2MCI --- In Repeater-Builder@yahoogroups.com, "tahrens301" wrote: > > Hi Guys, > > Can't find a KPT-50 programmer within easy reach, > so figured I'd re-program the EEPROMs 'manually'. > > Does anybody know what the bit patterns inside > the 1k eeproms are? (both the freq one, and the PL)? > > Figured I'd give it a shot. > > Thanks, > > Tim W5FN >
