The Philips PRM80 E banders. There are several versions apparently, 
The 8010, 8015 and 8020 can be done converted to 6 metre band (50-54 Mhz),
it's not much more than a reprogram, and some simple tweaking that needs to be done.


The 8025 or 8030, you will not be able to convert it to 50 to 54 MHz, 
this relates to the software and PLL division ratios.