I vote "no" for a built in tuner (really a "trimmer"). In addition to
the cost and space, two problems come to mind with internal tuners:
1) Limited matching range. Most internal "tuners" can match from
(nominally) 25 to 150 ohms, not a very great range. Remember that 150
ohms (3:1 SWR) gives the Yaecomwood fits and they NEED the trimmer for
even a relatively minor mismatch to keep from powering down, not a
problem with TT.
2) If you get a tuner with a wider matching range, you need larger
components--- which don't tend to fit inside the radio. To explain
further, Ohm's Law is the culprit. E=IR or E=IZ. The good news is, you
want a tuner with a wide matching range, say 1000 or 2000 ohms. The bad
news is you have Mr. Ohm causing mischief due to the high Z. For
example, one amp of current at 1000 ohms gives 1000 volts. This high
voltage is why you need large (wide spaced) components and why you hear
people complain that their (so-called) 300 watt tuner arcs over with
"only" a 100 watt transceiver.
Keep it a real tuner and keep it separate where the radio gods intended
it to be...
73/Carter/K8VT
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