Trio radio QR450 frequency issue

[Marko_MBS]

Hello Everyone,

I have a QR450 unit, reference TBURQR4LH-E00E1L00, hardware version J2, 400-450 MHz.

I need to set radio frequency to Simplex 452.525 MHz, but this unit does not allow input of any frequency above 450.000 MHz.

I have a QR450 unit from other installation set to Simplex 452.700 MHz, that unit allows input of frequency up to 453 MHz (400-453 MHz).

Does anyone have any info on how to „enable“ this additional 3 MHz so I could set frequency I need?

Any help would be highly appreciated.

Thank you!

[Joel_Weder · Accepted solution]

Hello Marko,

It sounds like the radio that can work at up to 453.0 MHz is an E0A type instead of the more common E00 ETSI type. The E0A type (new part number is TBURQR4LH-E0AE2L00) is only sold in Serbia. I'm going to guess by your company name that you are in Serbia. To work with the existing radio you'll need to go through your normal sales channel and get the E0A type instead.