Richard,
I looked up the three ( Motorola ) transistors in three substitution
handbooks that I have. I could not find the characteristics for the devices,
however the books list the following as substitutes:
MPS 6512
ECG # 123AP
SK # 3122, or 31444/123A
GE # 61, or 210
IR/WEP # TR/735
HEP # S0025
Radio Shack # 2038
MPS 3693
ECG # 123AP
SK # 3018
GE # 61
IR/WEP # none
HEP # none
Radio Shack # 2038
MPS 6514
ECG # 123AP
SK # 3018, or 3444/123A
GE # 210
Radio Shack # 2038
Hope this is of help. 73, Troy, W6HV
Richard W Collins wrote:
> Hope someone can help.
>
> The vfo on my Delta 580 has died but fortunately the rig works fine on
> the remote vfo and therefore I'm not qrt! Just without rit.
> I can only think one of the two transistors has failed as there is power
> going to the board.
> Can anyone give me equivalents for the ones listed in the manual?
> oscillator MPS6512 or MPS3693, and MPS6514 the buffer amp.
> 2N... and BC... series are available here in the UK.
> I'd like to be armed with replacements as the front panel needs to come
> off to get at the board.
> Thanks.
> --
> Rich (G4PCE)
>
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