Can you spell 2000mw at 5.8 Ghz!!!!!

Morli July 2, 2015 at 9:55am

Eric,

My apologies for highly belated response, I don't know how I missed it. There are two repeaters I access here in south India.

VU2KOD and VU2TCD with less than 1 W most of the time. These have one of the best coverage hence very popular here in south India in VHF range up to Srilanka. I am located just around 100k.m from it, so no big deal. If I use the yagi then it is even less power as these repeater are highly optimized for us poor HAMs. It is all about how well ur antenna performs. Period. Brute power over antenna quality is senseless. Setup is simple for above mentioned performance. Yausu 2R to 5 ele Yagi @ 145.150 Tx freq connected with LMR200 10mt cable, SMA at rig side and N connector at ant side. I assume u get the pic. I could push 1000 times more with other things I have but where is the fun in it. I haven't tried 5.8 in my setup yet but soon...... cheers.

John Rambo July 2, 2015 at 8:34am

I was always suspicious about this antenna. Its included in 433, GSM and all other kinds of kits. I have dissasembled one of those - seems to be adapted for ~3GHz.

Christiaan van Vollenstee July 1, 2015 at 12:01am

wow that is a lot, have you done a range test on the ground yet?

AntimatterCrusader June 30, 2015 at 11:54pm

I tested one of these, burns about 20W (about 1.5a and ~12.5v) gets hot, and I mean hot, very quickly, even with the fan - don't think about putting it in any time of enclosed space. Burns half as much power as the entire aircraft in cruise! lol

Eric english December 8, 2013 at 3:38pm

What frequency are you running at 250mw to reach that repeater, 60 km out? I bet it's not a microwave frequency. If it is I bet it's cw only. How many watts is that repeter running to get your 59?

As you know, at 5.8 ghz a fairly humid day will eat your signal like a fat cop at a doughnut shop. Ye high powered transmitters in a small space with other recievers are a bad idea, but %.8 is so much higher than anything else we use interferince is less of a problem. If you need that kind of power you will be running a 433mgz transmitter and Gps is 1.2ghz ish. Except for power usage, and multipathing, I' don't see a downside to a high power transmitter in the 5.8ghz band.

Admin

Morli September 23, 2013 at 11:11am

HAM licence would matter in HAM freq alone, assuming that is the case application

Admin

Morli September 23, 2013 at 10:23am

It is more about common sense/understanding about RF than being illegal. Brute force does not work here Most of fpv guys don't realize that it is not the power that makes them seen/heard further but the antennas that make them heard. Smart ones think about and improve antennas. If it were about Watts then NASA would be using KW for most of the space explorations projects. If it works for them with just <100 W for Million k,m for projects beyond earth then it should work very well for us guys. don't you think so?!!

On normal days I can trigger my local repeater which is 60+ k.m LOS with just 1/4 W handie into a home brewed slim jim ant.With 1/2 W I get 59 report and we guys don't BS with report.