Does anybody have one of these for sale? I am restoring an old Nordmende
portable radio and somebody replaced the RF amplifier with some sort of ECG
device.......the replacement device just isn't doing the trick.
I know that I can replace this PNP germanium device with an NPN silicon
transistor, but I will have to change the biasing network values, I might
have to do some impedance matching, and who knows what else?
It would be easier to just buy the proper device.

Pete

Pete KE9OA wrote:

Does anybody have one of these for sale? I am restoring an old Nordmende
portable radio and somebody replaced the RF amplifier with some sort of ECG
device.......the replacement device just isn't doing the trick.
I know that I can replace this PNP germanium device with an NPN silicon
transistor, but I will have to change the biasing network values, I might
have to do some impedance matching, and who knows what else?
It would be easier to just buy the proper device.

Pete



I don't understand German, but this web site seems to say you can
substitute an AF239s.

http://www.die-wuestens.de/kd/AF239equiv.pdf

If you're stuck, I'd be happy to give you a 2sa350. The af239s is also
a replacement for that transistor - but I think the 350 is only rated
for 40mhz.

Pete KE9OA wrote:
Does anybody have one of these for sale? I am restoring an old
Nordmende
portable radio and somebody replaced the RF amplifier with some sort of
ECG
device.......the replacement device just isn't doing the trick.
I know that I can replace this PNP germanium device with an NPN silicon
transistor, but I will have to change the biasing network values, I
might
have to do some impedance matching, and who knows what else?
It would be easier to just buy the proper device.

Pete
-----------------------------
This link
http://www.inginerie.protectia-mediu...onics/sale/tr=
ansistors.htm
says it is:
AF106 IPRS Baneasa GE-P 25V 10mA 220MHz VHF 0.2(max Ic)
This link is broklen but they may sell it or a replacement.
http://www.americanmicrosemi.com/products/specs/AF106.phtml
And this one has them for sale at =A31,49.
http://www.viewcom.f9.co.uk/data/transis2.htm
------------------
Terry