K2FI
| Joined: | Sat, Apr 4th 1998, 00:00 | Roles: | N/A | Moderates: | N/A |
Latest Topics
| Topic | Created | Posts | Views | Last Activity |
|---|---|---|---|---|
| Kite antennas and static buildup | Jan 16th 2019, 16:03 | 3 | 6,104 | on 16/1/19 |
| Radials or counterpoise for a mobile antenna | Nov 23rd 2015, 16:09 | 3 | 6,818 | on 24/11/15 |
Latest Posts
| Topic | Author | Posted On |
|---|---|---|
| Kite antennas and static buildup | K2FI | on 16/1/19 |
| So basically just a resistor going to ground from the outside of the BNC on the antenna feed point? That's pretty simple. TU |
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| Kite antennas and static buildup | K2FI | on 16/1/19 |
| I'm looking at the possibility of using using a kite to hold up one end of an EFHW. The full setup will be an LNR MTR3b, about 15 - 20 feet of RG-174 coax with a BNC to RGA adapter at the rig, and the EF-MTR antenna. The antenna is 66 feet long, and assuming I use the longer coax it would give me a maximum height of 86' straight up (obviously it will be far lower since a kite isn't likely to go straight up) One thing that I've found is that I should be concerned with static electricity building up in the antenna and that I should use a resistor to bleed the excess. What I *can't* find in exactly how I'm supposed to do that. Where and how does this get attached? (Yes, I know it's probably in the Handbook, but my copy of the Handbook is currently in another state and I don't expect to be able to get it until April) |
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| Radials or counterpoise for a mobile antenna | K2FI | on 23/11/15 |
| Greetings, I'm starting to get back into ham radio after about 20 years away. (I've been relicensed for a year and a half, but I'm only now starting to really operate). I'm using an FT-817nd as my rig and for quick portable operations I've hacked a folding music stand into a mount for an MFJ-1899T (not as a main antenna, but this is something I can have set up in under a minute). Over on FB, someone suggested adding tuned radials to it but I haven't really been able to find out much info about what size that means for each band. Would I do better with a counterpoise (a metal tape measure works well enough for that)? Any thoughts would be greatly appreciated. If the link works, this is what the antenna setup looks like (not extended, obviously) https://www.flickr.com/photos/filkerdave/22926921620/in/album-72157660827162339/ |
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