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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>I am pleased to report that Pure Signal can work very nicely on transverter bands as well, if you provide a suitable Tx mixer path back to the IF frequency.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I my case I started with a custom 2m & 432 transverter, which used a +23dBm-class mixer for receive, driven at +25dBm. Since the LO amplifier is capable of +28dBm , I was able to increase the drive to it by 3dB, and then drive two +23dBm-class mixers at +25dBm each. The added Tx channel is driven from a Bird VHF/UHF sampler in the common feedline to my log-periodic 2m/432 antennas, and applied to the mixer thru an attenuator adjusted for ~-17dBm output from the mixer, thru a 30MHz LPF (10m IF) to the Tx receiver input. There are 1KW FET amps following the tranvserter on both bands ahead of the sampler.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Operation is exactly as expected on the lower bands, and suppression of IM to the -55 to -60dB below PEP level was readily obtained. Clearly future transverter designs need to be full duplex and handle large enough signals to be useful for predistortion!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>__________________<o:p></o:p></p><p class=MsoNormal>Clyde Washburn, K2UE<o:p></o:p></p><p class=MsoNormal><a href="mailto:k2ue@rochester.rr.com">k2ue@rochester.rr.com</a><o:p></o:p></p><p class=MsoNormal>82 Lasalle Pkwy<o:p></o:p></p><p class=MsoNormal>Victor, NY 14564-9610<o:p></o:p></p><p class=MsoNormal>585-317-7006<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>