needed MRF 248
 

Have a RF Concepts 2 meter amp with 1 bad final
The driver is a single MRF 450 driving two SRF 3897's
The SRF 3897 is obsoleate and was replaced by MRF 248
Is there a better driver final combination to use? Is there a
inexpensive replacement for the SRF 3897?
Where would the best place to get a matched set of replacments for the
SRF 3897 of a matched set of the MRF 148?
Thanks