blackbrandt
That Darn College Student
- Joined
- Mar 18, 2012
- Messages
- 9,281
- Reaction score
- 60
Thanks... I will try that in the AM.
I test my eggfinder in the nose of my nike smoke , in a ebay with 2 treads rods and it work fine at 600+ meters and also at 700+ meters more than i need in our field Saturday.
.What about using the all-thread AS the antenna?
If I recall your design Gerard, the all-threads don't lie directly parallel to the antenna. Your antenna lies ahead of the threaded rods. Which is desirable.
The configuration that is to be avoided was the all-thread lying next to the antenna as could happen if someone tried to mount it in the ebay with the deployment electronics. (As dicey as that setup might be unless the antenna was on a bulkhead mount outside.) Kurt
What about using the all-thread AS the antenna?
No it's another Nike Smoke, the antenna was parallel with the treaded rods. I'm not looking for world record, as long as I have 1500 feet I'm ok. The treaded rod are not grounded so they will not absorb the signal.
(Snip) Finally, you still need some kind of ground plane for the antenna. Maybe a metal plate around the rod at the coax end would work, but to be effective it would need to be at least 160mm in diameter, although if it was 80mm it would do OK. You also have to contend with the other stuff in the AV bay, essentially running parallel to the antenna and interfering with the signal.
If you look at the Eggfinder TX PC board, you'll see that there's a full ground plane on one side, and the other side has a ground plane on the other side next to the antenna. This isn't optimal because it's not as large as it should be for a 1/4 wave antenna (80mm), and it's not perpendicular to the antenna element, but it works OK. Most other small transmitters have some kind of similar antenna/ground setup, it ends up being a compromise between optimal performance and practicality. If you add a 1/4 wave rubber duckie, you don't need to worry about the ground plane; the ground counterpoise is built into the antenna.
Any chance a 2m or 70cm kit version could be made available for more range? Would require a HAM, but still being a kit would be a great option.
Any chance a 2m or 70cm kit version could be made available for more range? Would require a HAM, but still being a kit would be a great option.
Ya, I had Rocket Locator/Bluetooth barf on me once during a flight, and my backup laptop with the dongle and MapSphere ran out of batteries right before the launch. THAT is why I made the LCD receiver... it's nearly foolproof.
Ok so I got a mac last week and am now starting to use it for my eggfinder and eggtimers. What i can't seem do is get to the serial ports to change the settings and get everything connected. Can someone please help me out on how to configure the port settings on Mac OS X. I can't find anything about it on the web. Any help appreciated.
Enter your email address to join: