I might have transcribed those number incorrectly. I took some notes and had to leave the project for a few hours. I just got back home and put it on the bench, into a good dummy load, and used my IC705 as the test receiver. Transmitting on 145.950, seeing a clear signal on 437.850 (the calculated third harmonic). Put in a Micro-Circuits BLP-300+ which should have -30dB attenuation at 450MHZ and not much of a difference at all. Certainly not 30dB. I'll keep working on it. Thanks for the reply. N1QDQ
N1QDQ