I have seen people do this with amp boards. They dont realize they created capacitance when they do that, copper strip with tape/glue holding it to the copper main board.
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Imax 2000 with ground plane kit VS Maco 5/8, what is your experience?
- Thread starter Lost Ram
- Start date
This has been an interesting thread. I am only recently deeper into antennas but find it fun to experiment with. I am in the local helicopter/hospital flight line, have a blind neighbor that loves listening to audio books via headphones, the same neighbor has his science experiment solar controller stuff mounted to the side of his house closest to my antennas/ base radios, ridiculous city and county regulations and a smaller back yard that I have filled lots of space with a large metal garage so my goal is always can I do what I want within lots of constrictions. It makes things 10x more fun. I am constantly reading something new (for me) about antennas and have learned only one thing for sure. Don't trust anything you read completely. What works for one person may not work for another. Not counting mobile my current antennas I am happy with number 3. One of them is a A99. I chased around a problem with the SWR degrading after a month of use that ended up being a top section that was going bad for some reason. Started out with low noise and below 1.1 SWR at the frequency I transmit on to ever increasing noise and rising SWR over time eventually hitting a little over 1.3 until I replaced the top section with a Firestik. I can say that for me specifically an A99 can be made to work with the base a mere 4 feet off the ground. Well enough that I am told it is between me and one other locally for the best and clearest sounding radios (without me using a high powered radio or amp). Well enough that I can hear people clearly 40 plus miles away locally. I would also agree eliminating cmc is a necessity with it. I run a Balun Designs 1:1 at both ends with LMR400. Overboard maybe but I no longer have noise during certain parts of the day making it hard for me to understand what people are saying.
My use case may be different than others, but here's the setup:
Base of mine is ~30ft up - looking to increase to 50ft at some point. Coaxial choke at the feedpoint and another (unun) choke at the tuner output. Three tuned 1/4w radials per band - 21.25, 24.940, 27.2 and 28.6MHz are the frequencies for which they're cut. They're sloped 45 degrees off the mount plate.
Naturally resonant in the middle of the Class D allocation but under 2:1 on the other bands. I can run a CB rig straight through with no SWR worries, and an IC-7200/AT-200 Pro II combo is used for ham band stuff. (The other tuner port is connected to a 160-10M inverted vee so why not use the thing...)
There's a rather large 10M group in the NEOH area and almost very one of us runs an Imax for net use. My QRO 10M antennas are a 6BTV, the dipole and a Mosley beam - but I have no problems being heard with the Imax and 100w.
Base of mine is ~30ft up - looking to increase to 50ft at some point. Coaxial choke at the feedpoint and another (unun) choke at the tuner output. Three tuned 1/4w radials per band - 21.25, 24.940, 27.2 and 28.6MHz are the frequencies for which they're cut. They're sloped 45 degrees off the mount plate.
Naturally resonant in the middle of the Class D allocation but under 2:1 on the other bands. I can run a CB rig straight through with no SWR worries, and an IC-7200/AT-200 Pro II combo is used for ham band stuff. (The other tuner port is connected to a 160-10M inverted vee so why not use the thing...)
There's a rather large 10M group in the NEOH area and almost very one of us runs an Imax for net use. My QRO 10M antennas are a 6BTV, the dipole and a Mosley beam - but I have no problems being heard with the Imax and 100w.