[Icom] IC706 mkII + Heil Pro set

[Jun Tanaka]

Thanks guys for your inputs.

First of all, I know Heil HC-5 (or HC-4) element does not fit to Icom
generally, and Heil has an IC element for Icom radios. However, I already
have a Proset + HC-5 and it works OK with my FT1000MP, or even my
(relatively) old IC765. I do not want to spend $$$ for 706, which is just my
back up, or vacation radio.

First thing I did was to insert a small cap to cut the DC in series with the
element.
Thanks to Ed, K1EP, I simply forgot it. Then my HC-5 gave some output to
706, but the moduration is still low.

Then, British trick which I found on Internet (www.qsl.net/g0fvi). This
trick, published in RadCom July 1999, is to adjust ALC pot to give some more
power. In 706mkII, the pot is named R511.  I turned it to almost maximum
position, and 706 gives more power.

With HC-5 element, 706mkII still needs more mic input, but it is so far
acceptable, After this adjustment, 706mkII gives full power with mic gain
=10 and comp=ON.

I think I may need an extra amp between HC-5 and 706. However I try to use
it as it is  for the time being.

Thanks guys.

73

de Jun

OE1ZKC JH4RHF KH2S 4U1VIC(op)
*One of ZL9CI gang who made another history*
e-mail: jh4rhf@arrl.net (ham radio)
          jun@vienna.at
http://www.qsl.net/jh4rhf
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