Results 1 to 14 of 14

Thread: RSSI ( Relative Signal Strength Indication ) Meter Function on Motorola MOBILE radios?

  1. #1
    Join Date
    Mar 26, 2019
    Posts
    9
    Thanks
    5
    Thanked 1 Time in 1 Post
    Country: United States

    Default RSSI ( Relative Signal Strength Indication ) Meter Function on Motorola MOBILE radios?

    Is there an RSSI ( Relative Signal Strength Indication ) meter on any Motorola MOBILE radios such as the XPR 4550 or XTL5000?


    I know this can be done with some Mototrbo handhelds such as the XPR 6550 and XPR 3500. This can be done with the following key sequence:

    < < < > > > ( Press left arrow three times then right arrow three times ).


    I would like do some testing and a mobile radio is better suited than a handheld, so would like to know if there are any Motorola mobiles that have some kind of an RSSI meter. I have several different models of mobiles other than APX units.


    -RF


  2. #2
    Join Date
    Sep 04, 2015
    Location
    In the Corn
    Posts
    374
    Thanks
    188
    Thanked 296 Times in 111 Posts
    Country: United States

    Default

    A decent amount of them have the meters but they're typically reserved for trunking use only. Off the top of my head, MCS2000 and the XTL O heads come to mind. Sadly to get any of these to function in conventional mode would require firmware modification which is not currently possible.

    The APX line has an RSSI display function, but it's not a bar graph and instead just a number.

  3. #3
    Join Date
    Nov 05, 2012
    Posts
    307
    Thanks
    237
    Thanked 197 Times in 128 Posts
    Country: United States

    Default

    Just hook up a RMN5127, good to carry around in the tool kit

  4. #4
    Join Date
    Feb 28, 2014
    Posts
    57
    Thanks
    42
    Thanked 9 Times in 7 Posts

    Default

    XPR5550 with the enhanced mic will do it. Same sequence, cursor left, left, left, right, right, right.

  5. The Following User Says Thank You to Msingewald For This Useful Post:

    PSEhub (Jul 11, 2019)

  6. #5
    Join Date
    Jul 11, 2012
    Location
    Stinkadeener
    Posts
    991
    Thanks
    833
    Thanked 1,305 Times in 579 Posts
    Country: United States

    Default

    The analog Spectra would do it with a button press. Why they dropped it completely until two or three versions of APX firmware ago is beyond me.
    "The Girl Scouts found several hungry REACT members at the finish line..."

  7. #6
    Join Date
    Mar 26, 2019
    Posts
    9
    Thanks
    5
    Thanked 1 Time in 1 Post
    Country: United States

    Default

    Thank you all for your responses. I have two different questions based on the information provided:

    1) RMN5127 Microphone:

    I have an XPR 4550 mobile. If I connect a RMN5127 to it, is there a way to have the radio show RSSI information on the screen?
    If so, what is the procedure to do this?

    I have an HMN4079E microphone from and XTL radio which looks almost identical to a RMN5127 mike, but has a "home" pictogram on the second button from the left below the round directional button instead of a button labeled "OK" that the RMN5127 mike has. Is there a way to access the RSSI meter with a HMN4079E microphone? If so, how is it done?

    I connected the HMN4079E microphone to an XPR 4550 and tried some different key sequence combinations but didn't have any success. Assuming that it's not able to do what's needed, is there anyway to modify a HMN4079E microphone to make it work?


    2) Analog Spectra RSSI:

    motorola_otaku, I might still have an analog Spectra. if you can provide some additional information, it would be helpful, i.e. can the RSSI info be displayed on the control head screen, if so, what type of control head(s) can be used, and what is the procedure?

    I've seen with a CDM1250 that the RSSI information can be obtained from pin 15 of the accessory connector. Is access to the RSSI info similar on the analog Spectra?


    -RF

  8. #7
    Join Date
    Jun 10, 2012
    Location
    The Old Dominion
    Posts
    178
    Thanks
    104
    Thanked 43 Times in 30 Posts
    Country: United States

    Default

    You don't need the keypad microphone for an XPR4550 as the left and right arrow buttons are on the control head. Use the same <<< >>> sequence.

  9. The Following User Says Thank You to foxtrotdelta For This Useful Post:

    Msingewald (Jul 12, 2019)

  10. #8
    Join Date
    Mar 26, 2019
    Posts
    9
    Thanks
    5
    Thanked 1 Time in 1 Post
    Country: United States

    Default

    I have tried the arrow button sequence on an XPR4550, but it doesn't result in anything. The arrow keys work fine. Is there something that needs to be enabled by CPS? Is there a minimum firmware version needed? The radio currently has firmware version R01.09.00 and CP version 11.00.10.

  11. #9
    cyrus's Avatar
    cyrus is online now Trailer Park Superintendent
    Join Date
    Jan 05, 2012
    Location
    Moonbase Alpha
    Posts
    813
    Thanks
    213
    Thanked 311 Times in 143 Posts
    Country: Japan

    Default

    Years ago we used to carry scanners to check the signal strength of our paging transmitters at call test locations. We were able to convince the boss that spectra's were a much better tool since they could read out the RSSI with an actual value.

    Worked well for those of us that were hams.
    Cyrus

    Bubbles: I'd like to see that Red Blue Green c***sucker put one of those together, duct-tapin' it.

  12. The Following User Says Thank You to cyrus For This Useful Post:

    motorola_otaku (Jul 15, 2019)

  13. #10
    Join Date
    Nov 05, 2012
    Posts
    307
    Thanks
    237
    Thanked 197 Times in 128 Posts
    Country: United States

    Default

    Quote Originally Posted by radio_firefighter View Post
    I have tried the arrow button sequence on an XPR4550, but it doesn't result in anything. The arrow keys work fine. Is there something that needs to be enabled by CPS? Is there a minimum firmware version needed? The radio currently has firmware version R01.09.00 and CP version 11.00.10.
    Haven't tried HMN4079 on XPR. R01.12.15 works fine

    You aren't on an option-board enabled personality when you are trying this are you?

    On 4550, and all 1st generation Trbo, it is a Federal Offense and OSHA noise level exposure violation to not be using R01.12.17 or S011708.

    Employees will develop arthritis and/or autoimmune diseases from adjusting volume knob excessively, will damage their hearing, and will develop Anxiety disorders and PTSD from being subjected to the startling sudden blasts of loud distorted unintelligible audio from releases prior to R01.12.17.

  14. The Following 3 Users Say Thank You to PSEhub For This Useful Post:

    com501 (Jul 13, 2019),foxtrotdelta (Jul 14, 2019),Mars (Jul 13, 2019)

  15. #11
    Join Date
    Mar 13, 2015
    Location
    WI
    Posts
    84
    Thanks
    50
    Thanked 57 Times in 30 Posts
    Country: United States

    Default

    The rssi meter function was added with firmware 1.09.10

    You need to update your old firmware to something more modern to get the rssi meter.

    Sent from my SM-G973U1 using Tapatalk
    not true does not constitute false

  16. #12
    Join Date
    Jan 18, 2013
    Location
    In Your Network
    Posts
    2,526
    Thanks
    2,149
    Thanked 1,630 Times in 819 Posts
    Country: United States

    Default

    Quote Originally Posted by PSEhub View Post
    Haven't tried HMN4079 on XPR. R01.12.15 works fine

    You aren't on an option-board enabled personality when you are trying this are you?

    On 4550, and all 1st generation Trbo, it is a Federal Offense and OSHA noise level exposure violation to not be using R01.12.17 or S011708.

    Employees will develop arthritis and/or autoimmune diseases from adjusting volume knob excessively, will damage their hearing, and will develop Anxiety disorders and PTSD from being subjected to the startling sudden blasts of loud distorted unintelligible audio from releases prior to R01.12.17.
    What did you say? My ears are ringing!
    Killing Public Safety Streaming, One County at a Time...

  17. The Following User Says Thank You to com501 For This Useful Post:

    PSEhub (Jul 13, 2019)

  18. #13
    Join Date
    Mar 26, 2019
    Posts
    9
    Thanks
    5
    Thanked 1 Time in 1 Post
    Country: United States

    Default

    SUCCESS!

    I upgraded the XPR4550's firmware to version R01.12.17. The RSSI meter now shows up when I do the < < < > > > key sequence.

    A big Thank You to everyone!


    -RF

  19. The Following User Says Thank You to radio_firefighter For This Useful Post:

    PSEhub (Jul 15, 2019)

  20. #14
    Join Date
    Jul 11, 2012
    Location
    Stinkadeener
    Posts
    991
    Thanks
    833
    Thanked 1,305 Times in 579 Posts
    Country: United States

    Default

    Quote Originally Posted by radio_firefighter View Post
    2) Analog Spectra RSSI:

    motorola_otaku, I might still have an analog Spectra. if you can provide some additional information, it would be helpful, i.e. can the RSSI info be displayed on the control head screen, if so, what type of control head(s) can be used, and what is the procedure?
    If memory serves the only requirement was version 6.xx or higher MLM firmware. It works with any head except an A3, and all you need to do is set a control head button for RSSI.
    "The Girl Scouts found several hungry REACT members at the finish line..."