The Radio Information Board

I've read a short blurb on modifying with a hex edit the PCConfig software to be able to enter some 902-928 channels but am wondering if anyone has modified the hardware in an 800MHz radio to function on 902?

Umm I may then have screwed up mentioning versions of the old efj firmware updaters. Is old EFJ software stuff that is not available nor is the company EFJohnson any longer? I've lost track of who bought it. sold it and seems not to have products but if this is wrong? Forget I asked about any firmwa...

I got a lot of help from this group and put this together in the hopes it helps someone else. Some of this might not be correct. I've found that with PCConfig that except for the Pre Version 1 radios you can use any baud rate except 9600 Baud. For those old pre ver 1 radios the only baud rate that w...

Hey Jim. On the finding older computers that still have 9 pin D connectors for "real" RS232 I made it known I needed such a computer and if I had not screamed NO MORE PLEASE!!! Would be forced to sleep on top of piles of free old laptops. Surprising how something that when it was new was j...

Ack. Didn't know the error beeps/flashes table in the service manual. I had the ABC switch set so A was clear and B or C were crypto. Turning it to A solved the problem. Now if I can just figure out how to get this KFDMini or Arduino KFD Hat to connect properly to the 5100 mic or 5300 mic connector....

Just wanted to add that I've also come across a -505 Version B. *And no clue what makes them different.

In regards to the first question I think the Racal and Thales 25 (Aka PRC6894) are the same. There is a -505 Rev A I see mostly followed by -503 Rev B also seen often. I'm not sure what was done different between these versions but they look very much the same inside. Using the Thales Update Version...

Just an update I've got the Thales Remote Commands Doc No. 1900390 Rev 0201 Dated August 15, 2003 - I'm looking for this document that might have additional commands or some information on the format of /CAL hardware calibration data. *Or the APCO25 PC program that is used to align the Thales Racal ...

Old thread so sorry to be late to the party. If I understand it someone said at least one version was CGA? Really old time super low res so your VGA monitor might not sync up. I did see on EBAY a guy selling working color displays for the R2670 that was fairly inexpensive. I rather with someone made...

Went my old Squadron and had a nice talk with the Commo guy. He showed me the Motorola Handhelds and said they have a not to be issued order (Fear of inventory?) Anyway I was surprised at the small size and the battery and antenna seemed to me (in the 2 minutes of playing with one) to be kind of und...

I wrote some software using two of the 40 Thales 25 Remote commands (That I know of) so I could fine tune the Radio's transmit (and recv) frequemcy while dialing the many power setting so as not to set aflame my frequency counter. I know of a command that reloads the hardware calibration. I am think...

I'm not sure if this is what your looking for? 1 2 3 4 5 6 7 8 9 [ o ] 10 11 12 13 14 15 16 17 18 1 Ext Mic or WE* Mic input or Key Transfer Indicator input, asserted by voltage <0.8VDC 2 Ext Mic or KEY Mic input or bu-directional key data, TTL Levels 3 Gnd 4 WRU Who Are you identifies external devi...

I've been working with a couple of different brand radios but the EFJ stuff is still my primary bread and butter. I picked up a ver 6 with 6.18.0 firmware which I see from some EFJ lit did exist. I don't know if its floating around in the wild or not but "Cough" ummm if anyone hears anythi...

I'll assume this is a radio programmed with NBFM channels? If you load the code plug from these radios check to see what sort of squelch is selected. I had one of the options change squelch type. If your in an area with a bunch of different transmitters on the same channel with different tone you pr...

I've got some super old 5300s that have the 68HC11 cpu and there are some with rev 11.11 firmware and others with 10.xx Was there ever a way to update this by computer or was this some sort of JTAG or component thing? Is there a PCTUNE made for these relics? Also I've some ARM based 5300s that have ...