PMP 450b Mid-Gain SM takes a long time to appear for adoption

PMP 450b Mid-Gain SM takes a long time to appear for adoption. I am a PMP450 Micropop as the AP for adopting. The SM’s are connecting using the ICC
Event logs on the MP show lots of file transfer error 28.

02/18/2021 : 10:54:08 UTC : :Update file transfer error: 28
02/18/2021 : 10:59:08 UTC : :Update file transfer error: 28
02/18/2021 : 11:04:09 UTC : :Update file transfer error: 28
02/18/2021 : 11:09:09 UTC : :Update file transfer error: 28
02/18/2021 : 11:14:09 UTC : :Update file transfer error: 28
02/18/2021 : 11:19:10 UTC : :Update file transfer error: 28
02/18/2021 : 11:24:10 UTC : :Update file transfer error: 28

Some SM’s appear within a few minutes others can take upto an hour. I am connecting 5 at once but this doesnt seem to make any difference to the time it takes.

Anyone have any ideas? GPS is sync’d ok. The mIcropop will occasionally suffer DFS, once a day, but it is in the corner of our office.

@AnthonyKnapkin1
By “adoption” are you talking about the SM registering to the AP?
The first time a SM registers it can take a long time to find the beacon of the AP, as their internal clocks have to exactly match up. This is hardest at 5 MHz, easiest at 40 MHz. Having the AP on GPS sync ensures his frequency is exactly on, so just SM that might have to search a bit. Once a SM registers once, future Registrations will be faster.

I don’t think think the “Update file transfer error” is indicative of registration problem. This looks like you are trying to pull a image or config file?

What software versions are you running on AP/SM? Is SM seeing the beacons in the AP Evaluation?

I have 1 SM which will not register. Log files show…
01/01/2020 : 00:21:08 UTC : :Radio Tx cal fail! reg:0x284=af vco not locked! freq 5800000 cnt=200 35°C
01/01/2020 : 00:21:10 UTC : :Radio Tx cal fail! reg:0x284=af vco not locked! freq 5800000 cnt=200 35°C
01/01/2020 : 00:21:12 UTC : :Radio Tx cal fail! reg:0x284=af vco not locked! freq 5900000 cnt=200 35°C
01/01/2020 : 00:21:14 UTC : :Radio Tx cal fail! reg:0x284=af vco not locked! freq 5900000 cnt=200 35°C
01/01/2020 : 00:21:24 UTC : :Radio Tx cal fail! reg:0x284=8f vco not locked! freq 5152500 cnt=200 46°C
01/01/2020 : 00:21:26 UTC : :Radio Tx cal fail! reg:0x284=8f vco not locked! freq 5152500 cnt=200 46°C
01/01/2020 : 00:21:26 UTC : :Not logging any more transmit calibration failures for this boot.
01/01/2020 : 00:22:39 UTC : :Reset due to error setting transmit frequency 5167500 at temperature 46 C

I have tried different frequencies and numerous reboots.

Unfortunately this seems like a hardware failure, especially since doesn’t help over numerous reboots. Sorry about this. How many units have this failure?

If the unit is still under warranty, I suggest open a Customer Support ticket and getting the unit replaced.

Thanks. I have already raised a support ticket and replaced the unit.
The unit is brand new.