Hello all,
We are currently installing laptops and Pentax PJ3 printers for a customer who already has M/A COM M7100 VHF (remote-head) radios installed. The radios, while P25 capable, are being run currently in a converntional analog mode.
It has been reported that some of these radios are receiving noise on certain, non-PL channels when the printer is on. The radio tech has stated that when the antenna is un-screwed from the base or the printer is turned off, the noise goes away. This is a remote customer who we won't be back to until the second week of August, so it will be a couple weeks until we can get a first-hand look.
As for the printer (and laptop dock), the customer wanted us to install our wiring to their pre-installed switches (already wired) rather than our standard of running a dedicated line to the battery. The reason I mention this is that from just glancing at their wiring on the last trip, it's possible that between the battery and the switch, the circuit may pass through numerous connectors, terminal strips and relays (all possible points for RFI pickup) before it even gets to the switch.
To make a long story short:
Thanks,
Mike
We are currently installing laptops and Pentax PJ3 printers for a customer who already has M/A COM M7100 VHF (remote-head) radios installed. The radios, while P25 capable, are being run currently in a converntional analog mode.
It has been reported that some of these radios are receiving noise on certain, non-PL channels when the printer is on. The radio tech has stated that when the antenna is un-screwed from the base or the printer is turned off, the noise goes away. This is a remote customer who we won't be back to until the second week of August, so it will be a couple weeks until we can get a first-hand look.
As for the printer (and laptop dock), the customer wanted us to install our wiring to their pre-installed switches (already wired) rather than our standard of running a dedicated line to the battery. The reason I mention this is that from just glancing at their wiring on the last trip, it's possible that between the battery and the switch, the circuit may pass through numerous connectors, terminal strips and relays (all possible points for RFI pickup) before it even gets to the switch.
To make a long story short:
- The Pentax PJ series has a long history of trouble-free (non-RFI) operation. However, I have contacted Pentax and am awaiting an answer
- The only users (2 or 3) reporting this issue are using M7100s. The rest (17 or 18) of the users have Motorola Spectras.
- All the radios use the same non-PL channels, so I should be able to rule that out (and PL use to cover RFI is only a band-aid anyway).
Thanks,
Mike