Belkin Tunecast
I've previously modified a Belkin Tunecast so that its RF output is now presented via a short length of 50 ohm coaxial cable with a bulkhead 'N' socket on the end (the latter being a re-purposed adaptor lead from some long-range WiFi experiments).
Just for the heck of it, yesterday I checked the Tunecast's output on an analyser (no baseband audio applied):
-32 dBm @ 88.1MHz
-24 dBm @ 107.9MHz
(NB: I noticed significant - i.e. 2-4dB - amplitude 'steps' at certain spot frequencies when going up/down the band by holding down the relevant button - I didn't note the actual frequencies at which this happened but if anyone needs that info I can repeat the test and post later)
Harmonics/sprogs/other misc. digital 'shash' generally < -45 dB w.r.t. carrier
19 kHz pilot @ -14 dB w.r.t. carrier
38 kHz subcarrier @ -32 dB w.r.t. carrier.
( @John_BS, russell-wb, swb 18 et al ... nowhere near CD2/11 / TM4/6 standard!!
)
Cheers