I have to disagree a bit with parts
of Daddle's post.
First, (assuming that your boat is not steel
or ally) using your uninsulated rigging
will indeed work. I have been doing this for the last 24 years on two different boats with results quite similar to those using insulated backstays
, etc. There are some drawbacks to the system, but ability to communicate isn't one of them. Oh... if the stay that you are using is directly grounded, ya gotta disconnect that ground wire. Having the base of the mast
grounded (as in lightning
protection) does not seem to matter.
I'm not familiar with the I-707, but many Icom
transceivers have a built-in SWR monitor
. The purpose of the tuner is to reduce the SWR to a value approaching one. So, if you check the owners manual for your radio and if it has the SWR monitoring capability you can determine if the tuner is functioning without talking to anyone. If the 707 doesn't have such capabilities, a friendly ham or radio tech might lend you an external SWR meter which will accomplish the same measurement. The tuner should get the SWR somewhere below 2:1 or so if it is functioning properly.
Lastly, Daddle is quite correct in saying your results in a marina environment
will be poor. It's a combination of many RF noise
sources and lots of other masts/rigging nearby. The noise
drowns out the signals you wish to receive, and the other rigs tend to absorb some of your emitted signal. The commercial
transmitters nearby quite possibly overload the front end of your receiver as well. Not a good place to do HF testing!
Good luck with your efforts.
Cheers and 73
Jim N9GFT/VK4GFT s/v Insatiable II lying Stradbrooke Is Qld Oz southbound