On 6/5/2017 3:46 AM, Roger (K8RI) wrote:
The current crop of new devices is likely to be around much longer
than devices made just 10 years ago.
Given the trend to pallet based amplifiers, I doubt the device shelf
lifetime will be very long. Instead, rather than replace an LDMOS
device on a pallet, the entire pallet (input transformer, bias,
output transformer, spreader, etc.) will be replaced in the event
of a device failure much like an entire tube is replaced in a tube
amplifier.
It may not matter what device (or devices) is used on a given pallet
so long as the I/O and form factor are the same and the new pallet
equals or exceeds the PO, compression point and IMD specs of the old.
73,
... Joe, W4TV
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