On Wed, Feb 16, 2011 at 6:54 AM, Ted Leonard <[email protected]> wrote:
> I plan to use the Tokyo HY-Power HL45B with my Flex 1500. > I have the cable to key the amp from the 1500 and realize I must manually > set the band switch as the voltage change normally supplied by the FT817 > in not available from the 1500 to do the auto band change. > > My question relates to 60 Meters there is no band switch position for 60 M. > Would the Yaesu FT817 ND which does 60M use the upper part of 80M position > or the lower part of 40M position. > Or is the claim that the amp covers all HF bands and 6 Meters not exactly > true? > Most amps use low-pass filters after the PA to attenuate harmonic output. So it depends on the cut-off frequency of the LPF. My first guess would be to try the 40m position since its cut-off frequency is guaranteed to be above the operating frequency for 60m. But you might turn the power down and try the 80m position. If the gain of the amp is still the same then it is probably safe to use the 80m band position. -- Brian Lloyd, WB6RQN/J79BPL 3191 Western Dr. Cameron Park, CA 95682 [email protected] +1.767.617.1365 (Dominica) +1.931.492.6776 (USA) (+1.931.4.WB6RQN) _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
