Hi
Recently purchased a fantastic Ferris M106 Portable Car Radio. Works beautifully off 240v- and both car and inbuilt aerial. However wondering the following:
How do you open the case to insert a battery
What type of battery required and can any be sourced these days, or something similar that will suffice
Is there a adaptor for modern aerial plug to slot into so that it fits into the aerial port of the radio.
Any info would be really appreciated, otherwise useless to me and may consider selling as require something that works in the old Morris Oxford.

This is the second enquiry we've had about a Ferris M106 in less than a week. Read post on Members Introduction re: Ferris car portable radio in a hotrod.

The batteries required to run this radio are a 9 volt "A" battery for the valve filaments & a 90 volt "B" battery for the +HT supply. These batteries haven't been made for nearly fifty years - so no, they are no longer available. However, you can string up 10 X 9 volt batteries in series to make up the 90 volts +HT supply. Space permitting, you can use 6 "D" cells in series for the filament supply, or a number of 9 volt batteries in parallel.

To run a radio like this on batteries would be for novelty/demonstration purposes only. Otherwise you'll have a rather expensive battery bill! At least this radio can still run off the mains.

These radios are well shielded and should work well in a car (unfortunately not from the cars power supply though).If the aerial socket is a bayonet or other type you can make up an adaptor lead to suit a conventional car aerial.

Perhaps you could use one of the small 150W inverters that plug into a cigarette lighter. The smaller ones are square wave though and that might upset the radio.

You might consider the Ferris 274 transistorised radio with a cradle, if you don't want a radio of the Oxford period. I had one of these radios in the seventies - very rugged with die-cast case. 9V battery for use out of the car, and had a socket for a plug pack if I remember correctly.