KFDTool vs APX

[KevinC]

I've had my original version KFDTool for about 5 years now and it's performed flawlessly until yesterday. I use the Hirose-to-Hirose cable between the KFD and the accessory adapter. Now when I plug in the cable I get "Accy HW N/A" on all radios I try.


What in the KFDTool puts the APX into "Keyloading" and can I emulate that easily some way?

Due to me having to quit working I no longer have access to the tools I used to, plus I'm poor so I can't just buy a new cable or adapter so I'm looking for free/cheap troubleshooting ideas. And yes, I know the KFDTool isn't a MSI product, but I'm working with MSI radios so I'm asking here.

 

[Echo4Thirty]

Isnt it just a sense pin to ground?

On the HiRose connector:
3 - YEL (SENSE)
4 - BLK (GND)

KFDtool/doc/TWI_CABLE_ASSY_NOTES.md at master · omahacommsys/KFDtool

Open Source P25 KFD (Key Fill Device/Keyloader/KVL) - omahacommsys/KFDtool

github.com

on the schematic it shows SENSE and GND tied together.

KFDtool/doc/pic/basic_hw_schematic.png at master · omahacommsys/KFDtool

Open Source P25 KFD (Key Fill Device/Keyloader/KVL) - omahacommsys/KFDtool

github.com

 

[KevinC]

Isnt it just a sense pin to ground?

On the HiRose connector:
3 - YEL (SENSE)
4 - BLK (GND)

KFDtool/doc/TWI_CABLE_ASSY_NOTES.md at master · omahacommsys/KFDtool

Open Source P25 KFD (Key Fill Device/Keyloader/KVL) - omahacommsys/KFDtool

github.com

on the schematic it shows SENSE and GND tied together.

KFDtool/doc/pic/basic_hw_schematic.png at master · omahacommsys/KFDtool

Open Source P25 KFD (Key Fill Device/Keyloader/KVL) - omahacommsys/KFDtool

github.com

So in theory shorting sense to ground on the adapter should put the radio into Keyloading?

 

[Echo4Thirty]

Correct. I just checked a KVL3000 and the sense and ground are zero ohms. As soon as I plug in the cable it put the APX in keyload. I assume you have hardware turned on in the codeplug as well.

 

[prcguy]

I just got some APX7500s and an 8500 and had a similar problem. I found the 7500s were programmed for ADP and "secure operation" was set for software not hardware. As soon as I selected hardware it recognized my KDFtool but would time out when trying to keyload. I then found KEY1 which I was programming was for ADP and KEY2 was AES so when I programmed KEY2 with the KDFtool it worked fine.

On the 8500 it was lack of knowledge where I was trying to keyload from the remote control head and it wouldn't recognize anything. I found there is a keyloading jack on the brick and that worked fine.

Otherwise some keyloading adapters have a specific value resistor across two pins that tells the radio to go into keyloading mode.

 

[KevinC]

I assume you have hardware turned on in the codeplug as well.

I found the 7500s were programmed for ADP and "secure operation" was set for software not hardware.

Even though I have the ability to totally obliterate this thread and act like it never happened I won't. Yes, setting to hardware encryption fixed my issue.

I would have bet both of your lives the 3 radios I tried it on were set to HW, obviously I was wrong. But at least I admitted it and didn't make up some lame problem I found and blame that.

Carry on...

 

[Echo4Thirty]

Even though I have the ability to totally obliterate this thread and act like it never happened I won't. Yes, setting to hardware encryption fixed my issue.

I would have bet both of your lives the 3 radios I tried it on were set to HW, obviously I was wrong. But at least I admitted it and didn't make up some lame problem I found and blame that.

Carry on...

Noob! lol

 

[FD101]

On the 8500 it was lack of knowledge where I was trying to keyload from the remote control head and it wouldn't recognize anything. I found there is a keyloading jack on the brick and that worked fine.

This is a really handy piece of knowledge to learn after you've installed 30 remote mount 8500's into Havis consoles with the keyloading port on the brick positioned in a way that you can't attach a keyload adapter.

Can't wait for our KVL7000 to arrive

 

[KevinC]

This is a really handy piece of knowledge to learn after you've installed 30 remote mount 8500's into Havis consoles with the keyloading port on the brick positioned in a way that you can't attach a keyload adapter.

Can't wait for our KVL7000 to arrive

My pain with that was 3 mobile CP's with 10 remote 7500/8500 each. They were originally keyloaded before the install, then the agency contracted the key update to us and I found out why. The PM quoted a couple of hours, it ended up being a 3 full day job.

 

[prcguy]

Even though I have the ability to totally obliterate this thread and act like it never happened I won't. Yes, setting to hardware encryption fixed my issue.

I would have bet both of your lives the 3 radios I tried it on were set to HW, obviously I was wrong. But at least I admitted it and didn't make up some lame problem I found and blame that.

Carry on...

You are a bigger man than me, I would have nuked it and denied ever asking.

 

[WB5UOM]

Wait...quote 2 or 3 hours and it takes 3 days?
Im having trouble seeing the problem, I thought that was almost normal on the two way business