Batboard

RocketNJ

I have the 438-470 preamp in my 450-482 S[ectra. Works well except in high RF areas. I can live with the intermod in those areas for the increased sensitivity in the ham band.

George

RocketNJ

I've changed two surface mount resistors on my Astro Spectra and was able to get the DPL and Astro deviation proper in the amateur and commercial bands. YOu need to adjust the resistors for the proper deviation/mod comp in the ham band, then align the radio. All works well.

George

RocketNJ

Unfortunately in some areas there are not a lot of competant techs.

Seems not many want to work in the RF industry and the talent pool is drying up.

George

RocketNJ

I've done it using the MRTI interface cable. Works great!

George

RocketNJ

Also maybe the radio needs an alignment? And check the squelch settings. I've een them defailt to a very high threshold.

George

RocketNJ

LAPD is NOT 9600 baud trunking. The 250/785 with digital cards will decode fine.

George

RocketNJ

sold mine for $225 locally and got the 785D and digital card.

George

RocketNJ

01/82 is corrupted codeplug.

Did you read the radio and save the codeplug before you made any changes? If not can you read a radio with same model and flashcode? Then clone yours.

The "toolproof" error happens on newer firmware radios when someone tries an unauthorized change of the flashcode ...

RocketNJ

Sounds like that poor radio has been forced a codeplug (not the original flashcode). It is possible the codeplug dumped into the radio has problems with the host and dsp code in the radio.

George

RocketNJ

Clearing the dots does not clear the log. The first time you connect to the RS232 board above the OMI/TOMI it should spit out the diags.

He can do diag 13 on each TDM to see if a particular board has faild and stayed failed.

George

RocketNJ

Sounds like the radio personality might be corrupted.

If you enable DTMF or MDC signalling do you hear it? This will help narrow down the problem.

George

RocketNJ

ok, thanks Chris. This works differently than Astro radios or MTs2000's. Those radios have an option to enable or disable Selective Radio Inhibit.

George

RocketNJ

Chris, I read a 1550XLS and did not see any Selective Radio Inhibit fields in the MDC menus. This is using the latest CPS software for the 1550XLS.

George

RocketNJ

The radio would need to support MDC radio inhibit. I do not know if the 750/1250 series supports that.

If the radio does support MDC 1200 radio inhibit then you would need either a MDC1200 Stat Alert console or a Centracom II console with MDC signalling BIM to be able to send the inhibit command ...

RocketNJ

I believe it is hold the up arrow (shift) and hit 1 2. Then hold up arrow and hit A B

George

RocketNJ

Yes, it is called a mixed mode system. They can set up the system fleet map for analog or digital talkgroups.

George

RocketNJ

HT750, 1250, 1550 portable. CDM series mobiles.

George

RocketNJ

The F2750B is a Darcom II 9000 radio used in Intrac systems. Pretty much useless unless you have Intrac.

George

RocketNJ

Typically the reference oscillator in the radio drifts low as the radio ages.

As the radio gets older the rate at which it drifts will decrease.

George

RocketNJ

Sounds like the zero IF offset problem. Let me guess, PL of around 123 Hz?

There is a way the depot can shift the ZIF. Make a list of the PLs you need to use and they can shift it to an area where you will not hear the problem.

George

RocketNJ

As far as talkgroups making it "private" where others can not hear it, all they need to do is either program their radio digital CSQ or hold the monitor button to hear all Astro talk groups.

George

RocketNJ

Have you gone through the deviation and mod comp alignments? If you do not have the proper test equipment then send it into a compentant dealer or the depot. The depot will also upgrade the host/dsp if needed.

Mod comp is set by measuring the level of the low tone at each test point then adjusting ...

RocketNJ

The flashing PTT light and double beep are low battery warnings.

Guess that one battery is bad.

George

RocketNJ

if you are talking about the side tones heard on the radio sending the signalling then try the alert tones offset in radiowide options.

George

RocketNJ

RKN-4035A

George

RocketNJ

why not just enter the flash code from the AS3's you have into the interactive flash decoder and see if it is indeed enabled in the radio.

George

RocketNJ

RVN-4181G is the RSS for the 2500 and 5000. YOu will also need the ribless serial or USB cable for the 5000. It does not use a rib box.

George

RocketNJ

I've been successful getting a couple of Astro Spectra 450-482 units to work IMBE in the ham band. Seems the soft pots for deviation in digital mode do not work below 450 MHz. I've changed chip resistors on the vocoder board to get the proper devitaion and also the proper mod compensation (there are ...

RocketNJ

Thanks Mike! The Save As and overwriting the existing file worked.

George

RocketNJ

I've done that. The problem is I cnage the band limits in CPS 2.0 to bring 450.000 down to 440.000. I then save it using Hex Workshop and HW saves the original as a backup. I go back in and verify the changes.

The first time I run the program it sets the band limits back to the defaults. Almost as ...

RocketNJ

seems anytime I try to edit the exe file the default frequency ranges come back the first time I run the program. Any ideas?

George.

RocketNJ

The part number for the UHF 438-470 front end with preamp is HRE-6012B.

The UHF 450-482 with preamp is HRE-6013B

Enjoy,
George

RocketNJ

There was an issue with Store and Forward on these units.

Contact System Support with the serial number of your unit.

George

RocketNJ

The latest Astro software is 2.0 CPS and 9.05.00 DOS. They are interchangeable, you can write with one and read with the other.

If you order RVN-4182 (Astro portable) or RVN-4184 (Astro portable and mobile) from Motorola it comes with both the DOS and Windows CPS version.

Enjoy,
George

RocketNJ

It is a 450-482 range Astro Spectra.

The deviation problem only affects the Astro deviation, analog and signalling are fine out of band.

It almost seems like the softpots default to 0 for the Astro deviation.

George

RocketNJ

Hi All,

I've found my UHF Astro Spectra's Astro deviation is low when transmitting out of band (440 band it's about 1.2 kHz). Alignment for the digital audio does not work out of band.

I've tried changing the gain of the op amp on the command board and got the deviation up to 3 kHz and I was able ...

RocketNJ

Try ESS in Elmsford, NY

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Astro Spectra - Low Astro deviation out of band