Thursday, 10 September 2009
b2set fun and games
Well last week or so been chasing bits for a b2set build and finishing off a paraset build.
I blame Coln G3VTT and Hans G0uPL for this valve madness.
This morning started on the mock up of the B2set Tx and Rx, I am using PCB for now. The photo above is sitting on a life size colour image of an original set to get the layouts correct.
As I intend operating mine I will take a few liberties with some components to make it possible to manage to have mine operational, so the original capacitors (condensors) and resistors will be chnaged for modern versions. Wires will not be cotton covered, although I have that and will be PVC coated.
One of the hard to find components for the build are the little IFT, you need 4 for the Rx.
Ian G3ROO sent me a pair shown here, on a copy of an original B2set (Type 3 MkII) manual.
The valves are originals 7R7, 7Q&, EL32 and 6L6 from Crowthorne Valves and again the Loctal vlve bases were hard to find.
I will be using Jackson air trimmers instead of the Orange trimmers you'll see in originals (unless find some)
Posted by M1KTA at 15:04