Fitting co-ax aerial socket to DAB radio that doesn't have one

I recently bought a Sony CMT-SPZ90DAB mini hi-fi with a DAB radio. The
aerial provided is a 2m length of wire connected to one female pin of a
a small plastic 3 pin plug which fits into a 3 male pin socket. There
is no other aerial connection. Reception in my area is very poor and I
have lost most of my favourite FM stations, and can receive only 6 DAB
frequencies.

I have a roof top mounted FM Yagi with 50 ohm co-ax and an internal
"slim jim" DAB aerial with 75 ohm co-ax and no way of connecting either
to the radio. Connecting to the single pin or the aerial wire, and
earthing the braid to casing doesn't work.

A Google search provided the following from a 2001 post to this group

"If you *must* go tampering inside this crap radio, connect the coax
inner via a small (100pf?) capacitor to wherever the dangly wire goes,
and the outer by another capacitor to the largest lump of copper you
can
find on the PCB."

Can anyone confirm that this is correct or have any other suggestions?
I know little about radio electronics and would appreciate help from
one of you knowledgable boffins out there.

Here's hoping.

.

Relevant Pages

  • Re: Balun Hook-Up and Signal Images - What is the Connection ?
    ... So by itself the Radio using the built-in Whip Antenna ... Questions - The Basic Wire Antenna: ... - How are you connecting the External Wire Antenna to the Radio? ...
    (rec.radio.shortwave)
  • Re: Fitting co-ax aerial socket to DAB radio that doesnt have one
    ... a small plastic 3 pin plug which fits into a 3 male pin socket. ... "slim jim" DAB aerial with 75 ohm co-ax and no way of connecting either ... Connecting to the single pin or the aerial wire, ... "If you *must* go tampering inside this crap radio, ...
    (sci.electronics.basics)
  • Re: Fitting co-ax aerial socket to DAB radio that doesnt have one
    ... a small plastic 3 pin plug which fits into a 3 male pin socket. ... "slim jim" DAB aerial with 75 ohm co-ax and no way of connecting either ... Connecting to the single pin or the aerial wire, ... "If you *must* go tampering inside this crap radio, ...
    (sci.electronics.basics)
  • Balun Hook-Up and Signal Images - What is the Connection ?
    ... So by itself the Radio using the built-in Whip Antenna ... Questions - The Basic Wire Antenna: ... - How are you connecting the External Wire Antenna to the Radio? ...
    (rec.radio.shortwave)
  • Dimming the Icom A200
    ... The fold out pages that act as a manual say to connect pin B to the ... instruction about connecting to the lighting circuit implies that the ... pin has no power during daylight operation. ... What WOULD make sense is that somehow the radio itself backlights the ...
    (rec.aviation.owning)