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ICOM Land Mobile Radio - Discussion forum for ICOM land mobile radio equipment such as the IC-F series radios. Please do not post amateur radio topics here.

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Old 01-23-2018, 2:17 AM
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Default F80DT PLL Lock Issue

I've got an F80DT that I bought from the VA (where I still work, so I still use it for that) that seems to have an issue locking up at higher frequencies.
Both of our repeaters are around 408MHz, so the radio is obviously a 400-470 split radio, but it won't lock up above about 452MHz...

This is annoying, as we have two commercial repeaters in the 464MHz band at our outlying clinics... When I have to travel to one of those clinics, I have to swap radios...

Any ideas on why the PLL won't lock on this above 452?

We don't have any more, I managed to get my hands on one before they were sent off to be surplused...
I have an F70D as well, so at least I had a charger and programming cable already. :-)

Software version is V3.1 with P25 version 3.0u

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Old 01-23-2018, 4:45 PM
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I'd be willing to bet your radio is a 380-450 split. Try punching in a freq lower than 400 mhz and see if it locks.
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Old 01-23-2018, 11:16 PM
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Yup. I got down to 374 before it unlocked again...
What is this 380-450 split? I can't find any info on it...
(I assume it's not something I can undo, either...)
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Old 01-24-2018, 6:35 AM
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It's a FIPS radio (designed for government) that is in the 380-450 split. Wasn't geared to sell to the general LMR user on the UHF band.

If you have some alignment skills and the proper equipment, you can bring it up a little bit, but I doubt you'll be able to do your 464/469 stuff.
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Old 01-24-2018, 6:55 AM
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Since I bought it from the government, that makes sense... :-|
I've got the tools (SM, scope, meters, etc.), but moving the range 20MHz does sound like a bit of a stretch...

For the hell of it, is there an alignment document available? (I've got the adjustment software, but I've never used it)
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Old 01-24-2018, 5:17 PM
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I believe the Service manual has that info
https://www.r-onetrading.com/downloa.../IC-F80_SM.pdf
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Old 01-24-2018, 7:14 PM
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Quote:
Originally Posted by baldbrad View Post
For the hell of it, is there an alignment document available? (I've got the adjustment software, but I've never used it)
As was posted, the service manual does. That one doesn't cover your FIPS radio (freq split) but would be very similar. Just be very careful, you can screw up a radio REAL fast in the adjust software.

You'd be better off finding a 400-470 split. You'd be golden then..
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Old 01-25-2018, 2:45 PM
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I'm not going to try it, as it looks like, reading the service manual, that it'd be really easy to bollocks it all up. I just bought a 403-470 split on ebay for $200...

I haven't decided whether to hang onto the other one or not... it's good for our government freqs and 70cm, so I might just get another charger and hang on to it.
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Old 02-01-2018, 8:49 PM
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OK, I have a new F80 with the proper split.
However, even though it has the P25 board (I checked), P25 doesn't work, and no mention of the P25 board is shown when I hold P0/P3 at powerup for version info.
Is there something I need to do differently with this to make it work? (It always just worked on the FIPS radio...)
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Old 02-01-2018, 9:11 PM
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Probably needs the factory activation software to work (EX-2785 J01 upgrade).

Those radio came in three flavors:

1) Analog only. No UT-120 board. Upgrade possible by adding board and activation software.
2) P25 ready. Has the UT-120 but does not include the activation software (thus digital won't work unless software is purchased).
3) P25 activated from the factory.
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