++++Use that excessive coax to make choke baluns. One right under antenna feedpoint, another where coax enters house.
Mike
++++Use that excessive coax to make choke baluns. One right under antenna feedpoint, another where coax enters house.
Mike
Captain -
Thank you for making my point. I never mentioned that the inner core would be an inductor, I just said that it will form an inductor, which the shield will do. If common mode currents are present on the coax, choking them off inside the shack is not a good idea as I see it. Instead of taking chances of it causing problems, just don't coil it up in the first place.
MOGVZ -You call my post "rubbish,", and then say,"It won't cause any problems unless . . ." Nice tap dancing.
- 399
You can do it, I run either browning rg8x doublsheild or lmr 240 for jumpers between equipment and also have a grounding bus that transceiver , amplifier and tuner are all connected to with flat copper braid going outside to a ground rod and I have no feedback issues in the house at all. Watch out for nasty noisy power supplies in your tv,s and monitors, some are better than others.So what to do with an extra 8' of stiff-ish 400?
I'm almost finished with a rig to radial antenna rebuild. I read the EXCESSIVE COAX thread above to conclude it depends on the antenna design and/or feed-point with regard to common mode current from not having an adequate ground system. That’s awfully complicated.
I should be fine without any coil by leaving it out for the OCF which is heavily choked (TRX Labs 4:1 Balun/Choke combo) but a simple 20m dipole w/ a 1:1 current Balun? ?
8' is only 3-4 turns 1' in diameter. I'm planning on placing it midway where the coax enters the building after a 35' vertical run to antenna. A big drip loop. I would like some heavily shielded cable for patch cords. My primary concern is TVI/Intercom/Stereo etc
Am I being reasonable by trying watch TV in the same room as kw HF transmitter? Idk,
neil, nyc