P7100 doesn't RX analog or unencrypted P25C traffic when keyloaded?

[nucleaireqc]

Did you succeed ?

For example when you transmit from analog to encrypted you ask for digital (AEGIS or Provoice)

In P25C if you have configured 3 radios but only 2 with DES / AES enabled encryption you get the audio from the other party but the keyless radio will have a robot noise in a washer. No encrypted or unencrypted switchover is required for the radio receiving the encrypted voice!

For the cable I had to modify mine as well, but this one has a 3.5mm jack connector to connect the resistor for key loading.

 

[TDR-94]

Did you succeed ?

For example when you transmit from analog to encrypted you ask for digital (AEGIS or Provoice)

In P25C if you have configured 3 radios but only 2 with DES / AES enabled encryption you get the audio from the other party but the keyless radio will have a robot noise in a washer. No encrypted or unencrypted switchover is required for the radio receiving the encrypted voice!

For the cable I had to modify mine as well, but this one has a 3.5mm jack connector to connect the resistor for key loading.

This particular radio can't be key loaded. It's either missing or has a bad chip that holds the PROM version. These older P7100 radios require 3 parts to be able to operate in P25 Private mode. They need to have the DES/AES features enabled, the correct combination of Flash and DSP, that supports DES/AES, and they need to have the the correct PROM version to support it.

This radio has the DES/AES features enabled and the correct combination of Flash and DSP, but the PROM version doesn't support DES/AES. I believe L3HARRIS runs a check for this when they run the ESN to see if the particular P7100 radio can be upgraded to enable DES/AES, when the those features are requested.

Because P5100 radios don't support DES/AES, they don't have the chip or PROM version to support it.

 

[nucleaireqc]

if your radio has F7 or F9 or F series DSP support with option 14 or 37 enabled you will have DES / AES

You can check using utility maintenance or program the menu function to a key to give you access to information such as feature etc.

 

[rescue161]

His radio is missing the PROM that allows encryption. He has the correct firmware (F9) and the correct feature set, but without that PROM, it will not work.

 

[nucleaireqc]

A radio for the garbage cans.

I do not understand the lack of PROM! all the 7100 series that passed through my hands all had the PROM ..

 

[KevinC]

A radio for the garbage cans.

I do not understand the lack of PROM! all the 7100 series that passed through my hands all had the PROM ..

The OP has stated it's a engineering prototype...

Yes, key banks are not related to P25, only Provoice EDACS and conventional systems set for Provoice or AEGIS.

"This particular" engineering prototype P7100 only indicates NO KBANK ERROR = 0871 or KEY LOAD BANK = 1-8, when powering it up with a cable configured for key loading. My only interest was configuring the programming cable into a key load cable and loading AES keys into the radio, with the key loader, for a P25 system programmed into the radio, to verify if the radio receives unencrypted P25C transmissions when set to private mode. The P7100 user manual indicates that it does not receive digital unencrypted transmissions, when set for private operation, only analog and encrypted transmissions are received.

This P7100 does not key load regardless of what type of encryption settings are assigned or what system is being programmed or what version of Firmware or DSP is loaded into it. I was just configuring it to have the ability to assign keys to a key bank, since that is what the radio keeps indicating when a key load cable is attached. The key loader can't talk to it, regardless.

Being that it is a engineering prototype, I think it's just spewing out error codes and is in fact, not able to have any keys loaded into it with the key load cable or the key load software.

 

[rescue161]

There were several of us that were pulling our hair out trying to figure out why his radio would not allow a key to be loaded. Someone else figured it out that his was missing the PROM data that was needed for encryption. Like was mentioned earlier, this is an engineering prototype and is not normal for the P7100 series.

 

[TDR-94]

if your radio has F7 or F9 or F series DSP support with option 14 or 37 enabled you will have DES / AES

You can check using utility maintenance or program the menu function to a key to give you access to information such as feature etc.

You also need the correct PROM version to support DES or both DES and AES. A knowledgeable member on the CS forum confirmed that these radios need the correct PROM versions to support DES and AES encryption. Look in the REVISION MENU under PROM VERS in your P7100's. You will likely see 03 05/07, being that your P7100's have DES/AES capability. That was the final version of the PROM and is AES FIPS capable.

This P7100 was a "field engineer's" radio and it has has had different things done to the main board. It's not a production radio. This radio's PROM VER is all zero's, which means it doesn't correctly support encryption and can't be key loaded with the key load software. It's either missing the chip that contains the PROM or the chip has died. It would need a donor chip with the correct PROM version to properly operate in secure mode.

 

[nucleaireqc]

i have parts of 7100 VhF or 800mhz if ever you want to install this prom.

I understand better now