and transmitter sockets (to decrease the sizes of the box) did
not use at the design. SWR- meter (or RF- Meter) as well did not
used here for the reason. Variable tank capacitor had simple inbuilt
vernier 1:3. The tuner could match antenna
impedance up to 300-Ohm. Limitation is only to working voltage
of the row capacitors and input variable capacitor. Figure 2 shows (for reference) schematic of the Lew McCoy’s
Note from I.G.: The Ultimate Transmatch
was described in the "Beginner and Novice" section of
the July 1970 QST (Page 24). The circuit was very popular that
it was also published in several of the ARRL Handbook from the
1970s. I have seen one “Real McCoy Transmatch” (as a seller sad to me) at one of Ontario Hamfests. When I decided if I heed to buy this one or not,
another person bought it.
broadband transformer, connected to the tuner, allows use the
tuner with symmetrical antennas fed through ladder line and with
generation of the wire antennas. The transformer provides 1:4
and 1:9 transformation ratio.
Figure 3 Broadband Transformer
Lew McCoy, W1ICP
Figure 3 shows schematic of
the transformer. Transformer is wound on to ferrite ring in 30-
mm OD and permeability 20 by triple wires in diameter 1- mm (18-AWG)
in Teflon insulation. Pictures show design of the tuner.