I have a cheap 220mhz magnet mount I was going to use on the metal roof for a temporary setup. I grabbed the antenna and tried to unscrew what looked like the coil from the base, and felt the coax pop inside. Oops. I cut the felt open and yep, twisted it right off the solder lugs. No big deal... but wait, there's a stray little ceramic capacitor in there. Huh? I'm far from an expert on antenna theory, buy I don't recall ever seeing a cap in an antenna base before. Problem is, I cannot tell if it was soldered between the center conductor of the coax and the antenna element or if it was soldered between the coax shield/ground and the center conductor/antenna. It's still attached to the center solder lug of the brass antenna base. Any insight? Is it advisable to remove entirely, or should I solder it back to where it came off of?
Oops... Antenna doesn't disassemble that way. Help?
- Thread starter ur20v
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nd5y
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Lots of antenna types need capacitors or inductors or both. What brand and model antenna is it? Without knowing that nobody can help you.
Could you possibly post a few pictures?
nd5y
Member
How long is the whip? If it's a 5/8 wave for 220 MHz it should be around 32" including any spring and the metal piece the whip is attached to. Usually those type antennas have a series coil and no capacitor. Advertized gain (which is probably a lie anyway) and power handling capacity are meaningless at this point.
This seems to meet all the described requirements (especially cheap)
mfjenterprises.com
MFJ-1723, MAG. MOUNT, 220 MHz MOBILE ANTENNA
Now there`s an antenna for all of you 220 MHz fans!This Mobile Magnet Mount Antenna covers 220 MHz band with a whopping 2.6 dB gain!Similar to MFJ`s other popular mobile antennas, this MFJ-1723 features a 22 ½ inch cellular-looking, black slimline radiator, 12 foot coaxial line with SO-239...
mfjenterprises.com
Pretty much it... though marketed as a "Harvest" brand product. No doubt they're the same.This seems to meet all the described requirements (especially cheap)
MFJ-1723, MAG. MOUNT, 220 MHz MOBILE ANTENNA
Now there`s an antenna for all of you 220 MHz fans!This Mobile Magnet Mount Antenna covers 220 MHz band with a whopping 2.6 dB gain!Similar to MFJ`s other popular mobile antennas, this MFJ-1723 features a 22 ½ inch cellular-looking, black slimline radiator, 12 foot coaxial line with SO-239...
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