Expert evaluators wanted.

sky_nazi · 08-04-2002

I am just trying to extend my RG-1000 range with a couple home brews.

The omni was built from here:

http://www.geocities.com/lincomatic/collinear.html

I was located indoors about 30 feet from the RG with 2 walls in the line of site with the RG.

Here are my few questions:
1. What does the red mean?
2. What does the green mean?
3. Is this a typical gain with the respective antennas?

Thanks

Thorn · 08-04-2002

Quote:

Originally posted by sky_nazi
...

Here are my few questions:
1. What does the red mean?
2. What does the green mean?
3. Is this a typical gain with the respective antennas?

Thanks

1) Red is noise.

2) Green is signal.

3) Omni is only giving you about 2-3dB gain. It looks like you'll need to do it over. It should be higher. It also appears to be losing the signal at times. You may have something loose or shorting.

Pringles seems to be about 8-10dB, which is about right.

sky_nazi · 08-04-2002

Thank you Thorn,

At the end of the omni's signal area I probably was messing with it, which gave it those areas of loss.

lincomatic · 08-04-2002

sky_nazi,
looks like you did something wrong in assembling the collinear omni. that's the kind of lousy performance i got when i did it wrong. now that it's right, i'm getting 8-10dB increase over the built in. also, try the omni both horizontal and vertical. if the polarization is off the gain goes way down.

Thorn · 08-04-2002

Glad to help. Good luck rebuilding the omni or making v2.0.

sky_nazi · 08-04-2002

Ok, lincomatic

If the polarity is off, what did I do wrong?

This was my first shot at makin the colinear, I knew there would be a version 2.o, so I bought double everything.

08-04-2002	#4 (permalink)
lincomatic Squaaawk! WiFi! WiFi! Join Date: Apr 2002 Location: Tinsel Town Posts: 1,682	sky_nazi, looks like you did something wrong in assembling the collinear omni. that's the kind of lousy performance i got when i did it wrong. now that it's right, i'm getting 8-10dB increase over the built in. also, try the omni both horizontal and vertical. if the polarization is off the gain goes way down. __________________ ~lincomatic

08-04-2002	#5 (permalink)
Thorn Did you do the math? Join Date: Apr 2002 Location: Villa Straylight Posts: 10,358	Glad to help. Good luck rebuilding the omni or making v2.0. __________________ Thorn "Read Altas Shrugged. Compare it to today. Repeat as necessary"

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

08-04-2002	#3 (permalink)
sky_nazi Registered Member Join Date: Jul 2002 Location: NOLA Posts: 20	Thank you Thorn, At the end of the omni's signal area I probably was messing with it, which gave it those areas of loss.

08-04-2002	#6 (permalink)
sky_nazi Registered Member Join Date: Jul 2002 Location: NOLA Posts: 20	Ok, lincomatic If the polarity is off, what did I do wrong? This was my first shot at makin the colinear, I knew there would be a version 2.o, so I bought double everything.