ARRL

AI6OZ

Joined: Fri, Nov 7th 2003, 10:54 Roles: N/A Moderates: N/A

Latest Topics

Topic Created Posts Views Last Activity
G5RV & Very High SWR Jan 2nd, 00:26 2 382 on 2/1/16
G5RV Antenna Installation Dec 24th 2015, 16:21 3 460 on 22/6/16
Follow-Up to Wilderness Protocol Sep 14th 2014, 13:02 2 1,282 on 2/11/14
Wilderness Protocol Sep 1st 2014, 16:08 1 976 on 1/9/14
Cross Band Radio Jan 10th 2014, 23:52 2 1,129 on 15/1/14
Cross Banding Radio Dec 20th 2013, 00:03 1 1,466 on 20/12/13
RST (Readability, Strength, Tone) Nov 4th 2013, 23:15 2 1,492 on 5/11/13
RF Safety Jul 31st 2013, 02:34 1 1,225 on 31/7/13
Doublet Type Antenna on my Garage Apr 28th 2013, 22:05 3 1,277 on 29/4/13
MFJ-259B Accuracy Info Request Jan 15th 2013, 00:18 1 1,492 on 15/1/13

Latest Posts

Topic Author Posted On
G5RV & Very High SWR AI6OZ on 2/1/16
I have recently purchased a G5RV Mini Band antenna that covers 20, 17, 15, and 10 meters. My home station consists of FT-950, MFJ-929 tuner, LMR-400 low lost coax line all connected to my G5RV antenna.

The G5RV center mounting bracket is currently mounted on 10 foot PVC pipe about 25 feet above ground. The PVC pipe is in turn mounted on a metal pipe (giving me the 25 feet above ground) and there is about 8 feet between the metal pipe and the G5RV center mounting bracket on the PVC pipe.

The G5RV copper stranded wire is mounted similar to the G5RV center mounting bracket along the edge of my garage giving it a L – shape configuration, also about 25 feet above around.

The area around the G5RV consist of the two garages the antenna is mounted between, one large RV parked in front of my neighbor’s garage, and the utilities power and phone about 10 feet or so behind/next to the antenna.

My problem - The 20, 17, and 15 meters bands all have very high SWR and the MFJ-929 tuner is unable to adjust from the very high SWR down to a low SWR. 10 meters has no difficulties tuning to a low SWR. I have a LMR-400 coax 6 coil choke inline (or not inline) but this doesn’t seem to make any difference, I still get very high SWR.

What I do not understand is why and what I can do about it. Does anyone have any suggestions about why I have Very High SWR and what I can do about it???

Thanks
G5RV Antenna Installation AI6OZ on 24/12/15
I’m ramping up to install a G5RV antenna and I’ve been told a G5RV Horizontal mounted antenna has better performance than G5RV Inverted "V" Antennas. From a performance point of view does it make difference whether G5RV antennas are mounted horizontal or inverted “V”?
Follow-Up to Wilderness Protocol AI6OZ on 14/9/14
This last Saturday (09/13/2014) I attended several meetings and at the end came away with the feeling not much is known about Wilderness Protocol. Using Wilderness Protocol in ARRL word search will turn up several articles posted with in the ARRL data based. To sum things up the Wilderness Protocol is a suggestion for Amateur Radio Operators outside of repeater range to monitor or use standard simplex channels at specific times in case emergencies or other urgent calls. This protocol plan was developed to assist with contacts between Amateur Radio Operators that were traveling in uninhabited areas and outside repeater range.

While here are several frequencies I expect the most common to be heard will be 146.520 MHz or 446.00 MHz. The other frequencies are 1.25 meters (223.5), 6 meter (52.525) and 23cm (1294.50). In addition there are amateur radio wilderness protocol monitoring times at the top of the hour, for example monitor 1:00 am to 1:05 am. A very good listing of wilderness protocol monitoring times can be seen along with other protocol info at http://k4jwm.com/wilderness-protocol.htm.

Since I have a dual-channel Yaesu FT-8900 I monitor 146.520 100% of the time and use the other channel for making contacts (QSL) when I'm playing in the Mojave Desert, CA. When I stop for the night I have Kenwood handheld TH-F6 tri-band dual channel radio that allows me to monitor during the evening hours.

The Wilderness Protocol should not be viewed as something just for hikers, off-roads, or prospectors it is available for use by everyone anywhere repeater coverage is unavailable. The protocol only becomes effective when folks put it to use.

Now the driver behind my question "What is the current Wilderness Protocol status?" are the stories I seen posted on the internet about possible changes to the Wilderness Protocol. I was hoping someone had some insight to these possible changes we need to be aware of.

Cheers, Beers, & Gold
Chuck
KG6SYX
Wilderness Protocol AI6OZ on 1/9/14
What is the current Wilderness Protocol status?
Cross Band Radio AI6OZ on 10/1/14
Recently I was trying out cross band radios with repeaters. Even thought there was no transmitted signal sent via my Handheld or truck radios, or other outside radios via the repeater there continued to be a nuisance signal received. There was no real pattern to this nuisance signal, it seem to occur randomly. Could be a fallout from the repeaters hang time or maybe something to do with my truck radio while in cross band radio mode?

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