Why can't a person just bolt two normal antenna brackets together and simply exclude the insulating washer on one bracket? Connect the coax to the other one and you have the same thing as that fancy pre-made unit.
-
You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
Unusual Antenna performance
- Thread starter whiteastro
- Start date
Probably because they would be electrically shorted out. There is a reason for everything.But let's see what the experts say.
What is it that the balun does exactly? I believe my dipole that I bought has a balun but I don't remember the purpose of it. The dipole is a cheap interesting way to get back into radio. If I would have known about them I might have used one when I got back into radio.
That will work fine. The MFJ bracket uses the same principle.
The result is one whip is connected to the coax’s center conductor and the other to the shield.
Respectfully, Mike, thousands radio operators (myself included) disagree with you. Hamstick and CBstick dipoles have been around forever. These setups work. And are fun to make and experiment with.
Let me elaborate.
1. On this picture we have unbalanced line connected to balanced antenna. So we have 3rd element in 2 element antenna. WRONG. Coax is now part of the antenna which is cause of many problems.
2. Antenna is mounted on metallic pole. So we have 4th element in two element antenna. WRONG. We don't want a pole to be antenna part, neither feedline right?
2 things: 1:1 or choke balun to cure #1 issue.
Insulate antenna mount from pole or use dielectric mast to cure #2 problem.
Mike
p.s. if antenna connected with black banana plug is insulated the same way as antenna on the left, we can skip #2
1. On this picture we have unbalanced line connected to balanced antenna. So we have 3rd element in 2 element antenna. WRONG. Coax is now part of the antenna which is cause of many problems.
2. Antenna is mounted on metallic pole. So we have 4th element in two element antenna. WRONG. We don't want a pole to be antenna part, neither feedline right?
2 things: 1:1 or choke balun to cure #1 issue.
Insulate antenna mount from pole or use dielectric mast to cure #2 problem.
Mike
p.s. if antenna connected with black banana plug is insulated the same way as antenna on the left, we can skip #2
Last edited:
Point(s) taken. Agree on all accounts.
That said, in its simplest form, will screwing two mobile whips onto such a mount, attaching the coax, checking SWR and sticking it in the air work?
Absolutely. Might have some CMC and a skewed pattern but it will hear and contacts will be made. And when conditions are right, faraway DX. Been there, done that.
Everything doesn’t have to be done by the book. Some prefer quick and easy. Like using Cliff Notes In college.
Jeff just to let you know the other day I finally tried that little cheapo tuner with success to bring my SWR down on that dipole. The problem being while my Heart is in the Radio Room my Butt has to be in the rest or the house and garage to finish up unfinished remodeling. But when the attic gets warmer I will slightly shorten that dipole and maybe with the tuner I can get almost perfect SWR. I have been told before that a tuner is just a compromise and not a real fix so that is why I want to get it as close as I can manually.
Tuners 4 SALE
HEY HOMER TUNER PARTS !!!!!
Balanced line tuner BARGIN
HEY HOMER TUNER PARTS !!!!!
Balanced line tuner BARGIN
Vintage Ham Radio Antenna Tuner Johnson Matchbox - electronics - by...
Johnson Viking Matchbox Antenna Tuner Model 250-23 Excellent Condition $75 Located in Kokomo
kokomo.craigslist.org
$100.00 Good price!!! Johnson 275 watt Matchbox