Hi Alan and Sverre,
your comments inspired me to try modifying my QDX for the higher bands. I figured how to use ELSIE and came up with an LPF that rejects third harmonics from 18-10m, AND includes the Rx BPF.
I did a 'broad banded' BPF centred around 26MHz to cover 18-10m and dumped the 80m winding and wound a new 15 turns in the 'spare' room on L12, replaced C30 with 22pf (thanks Sverre for initial calculations).
Reconfigured the 80m slot to cover the new bands (that was fun!)
Some fine tuning needed for the tx spectrums, getting around 2.5W on 10m at 12v (12v build), but was rewarded last night by working across the pond and around Europe, on all the new bands, using a combination of 10m attic dipole and an ATU-100.
best 73 Ken G4APB
