Need to provide a sine wave in the range 100 KHz - 10 MHz at around 10 watts into an inductive load for a physics package at a startup. We're using function generators currently (HP 3314A for example) but we need more power, as in up to around 10 watts (into nominally 50 Ohms).
The signal source is easy, we've got that -- it's getting from the mW range to the 10 W range that's the difficult part, or difficult without spending more than say $200.
Being a startup, cheap is important, or we'd go for a used ENI wideband amp (I found an ENI 320L, 250 KHz - 110 MHz, 20W for $1450, out of our price range).
Something off the shelf would be good, something easy to replicate would be acceptable. Output doesn't have to be really clean, so AB2 is acceptable.
Suggestions?