Re: [WestMichiganHams] Repost of WA5VJB Cheap Yagis for VHF/UHF from Sept. 17th
- Looks llike I replyed to the wrong e-mail. Here it is again.Another antenna for sat operation is a quagi. they are very simple to build and work well. I have built both 2M and 70Cm versions. Used the for field day Sat contact.for all kinds of antenna projeects. To many antennas and not enough time.73s----- Original Message -----From: kc9bqaSent: Thursday, October 08, 2009 4:48 PMSubject: [WestMichiganHams] Repost of WA5VJB Cheap Yagis for VHF/UHF from Sept. 17th
I appreciated KD8BIG's post because it reminded me of a link I posted here on Sept. 17th. The disclaimer is that I am not a builder (shame, shame, LOL).
http://www.wa5vjb. com/yagi- pdf/cheapyagi. pdf
I know these antennas work because I've heard from VHF'ers who were pleased with their performance. These antennas are optimized for the SSB portions of bands like 2m, 1.25cm, and 70cm.
With a decent horizon and at least 25-100w out, hams can make contacts in the 100-200 mile range to well-equipped stations. That's with flat band conditions. The occasional tropo opening can mean working several states away. You also need to rotate these beams, to zero in on the station you're working. It is not fast-food hamming, but it's also not rocket science. The buzz is when you work someone 200-500 miles away. That's the AHA! moment.
I work a fellow in far NW Ohio reliably during our nets, and he has a 5 element quad for 144, up about 40', and he uses a small brick amp giving him about 150 watts out.
Which brings me to another point...
If you visit that PDF link, the dimensions are for a 144.200 MHz yagi. (144.200 is the calling freq. on SSB)
Is anyone here confident about giving alternate dimensions for a yagi optimized for ops on 146-147 MHz FM?? I'm not that guy. :)
As the author WA5VJB notes in his comments at the bottom, building the 144 yagi and using it for 146.5 (+/-) is a compromise at best.
You know by now that I'm a big promoter of getting involved with SSB or CW on the V/UHF bands because the signals travel further. These days, so many "all-bands-in- one-box" rigs have SSB capability on 6m, 2m and 70cm. So it's natural to want modest antennas to see what's on the SSB side. The good news is that SSB activity is on a definite upswing, plus you have the weekly Wed. nets we host over here.
Building these yagis makes for a great club or group project. You get 5, 10, 15 hams on these bands, and you've found a way to explore a really fascinating aspect of VHF.
The next big ARRL contest for VHF/UHF isn't until mid-January. Real hams love to operate during the winter. :) The SSB side of V/UHF REALLY comes alive in these contests. Yet 90-95% of hams don't even know about it. My goal is to inform you about the option.
There will be mucho activity from WI and ILL in this contest, and MI has always had good activity, too. Problem is, the "weak-signal" (SSB) guys don't do a good job of reaching out to Joe Q. Ham. I'm different that way. I always want more guys/gals on the bands because it's more fun.
I hope in the weeks to come, we hear from more experimenters that are improving their range on VHF/UHF.
I'm always available to answer questions, direct email is probably best. Or ask on the air, during our nets.
Todd KC9BQA EN63 40 N of Milwaukee
http://www.kc9bqa. com For Frequent VHF/UHF Updates