Transmission1

Hi All,

I would like to replace the frequency mode switch on my mark 4 radio. It is a 4 position switch that selects 26 thru 29mhz.

Would anyone know brand of switch I would need to buy?

Thanks,

Fred

How many poles is it? How long is the shaft?

Here's a selection you can pick from :-
https://www.ebay.co.uk/sch/m.html?_ssn= ... h&_sacat=0

I have an original 148 GTL-DX band selector switch here all in good working order. However it's still standard and thus only has three positions. It's a simple task to add another position though.

we used the org cobra switches when building the mk4 & mk5 you need to mod the switch to give one more pos

I haven't came across one yet that couldn't be fixed . Maybe a broken pin on the outside might cause me to have to buy one . Had one also with a slightly bent inner select pin , but I managed to straighten that one out as well .

1) Press the 2 plastic pins together that hold the back plate on . I prefer to do it this way , rather than cutting them off .
2) Pry the back plate off gently with a miniature flat head screwdriver .
3) Strip it down making sure you mark down the order .
4) Clean out all the gunk from the flat contact surface sections with a cotton bud dipped in alcohol .
5) Gently scrape the ends of the pins , and bend them inwards slightly to improve connection .
6) Mod if necessary . There's a document on here somewhere I think that shows how to do this .
7) Rebuild , and use a soldering iron to remelt the 2 plastic pins .

Good as new .

S,