MY TUNA TIN TRANSMITTERS, FOR MORE INFORMATION
TUNA TIN 2.http://www.fix.net/~jparker/norcal/tunatin2/tunatin.htm
etched sidelayout side
The pictures are not to scale, pcb measures 3.25 inches. The circuit board is available from FAR CIRCUITS
and be sure you "SPECIFY THE NORCAL VERSION" when you order.
FAR CIRCUITS.WEB SITE
crystals ordered from: ki6ds Doug Hendricks..e-mail..for instructions/availability.
the molded inductor and resisters were ordered from:
Mouser Electronics, Mansfield Tx.Mouser Web Site
the capacitors, toroid coils, transistors from Dan's Small Parts Dan's web site
case opencase closed up
Finished Tuna Tin 2, my old VOM (vintage 1962) measured 52ma in the DC line,
so about half a watt. Not bad for 2n2222a's huh?
As an after thought, I checked. All (new) parts are STILL available atRadio Shack
Actually I've built four of the Tuna Tin 2's. Three in the traditional way and one in a Radio Shack case
Current required, 25 ma to 42ma so the Power exceeds 250mw to 450 mw. I can't begin to express the fun I've
had building and testing these little transmitters.Just to the left of the Ten-Tec D-C receiver is #4
This is the last of the tuna tins I built, using a larger can and stand offs so that I did not have to nibble
the bottom of the can out to mount the pcb.
It transmitts on 7.122 mhz pulls 32ma at 12vdc equalling 384 mw of power, truly QRPp.