Which antenna is better?

Real world antenna comparisons

I don't have many choices for my antenna at my residential QTH.  I have an 80m OCF Dipole (aka Windom) hung from the peak of my roof at about 25ft and a ladder line fed 40m Doublet folded around in my attic at about the same height.

Generally I've been using my 80m Windom for most contacts because it is resonant on 7 bands and I don't have to tune it.  I've had a number of on-air ragchews where I switch antennas and ask for signal reports but it is often a hassle and I don't like to interrupt a ragchew to ask for that sort of comparison. 

So how do I know which antenna is better for certain bands and directions?

The RBN

The Reverse Beacon Network offers an objective and patient antenna tester.  I just recently learned about this resource and it's a fabulous tool.  When my CQ isn't being answered I'll often bring up the RBN and check my signal reports and then switch antennas to see how they compare.

It has been very interesting to learn that the Doublet in the attic often outperforms my Windom usually by 12db and sometimes by as much as 20db especially on the higher bands.  I'm guessing that part of it is the greater efficiency in the ladder line but that doesn't tell the whole story because the Windom offers a low SWR on most bands and shouldn't be eating up much power in the coax through SWR losses.  Antennas are magic.
Two highlighted records show the difference when I switched antennas and moved the transmit frequency slightly to cause a new report to be sent

Process

Ok so here's what I do... The RBN stations will report only when they see a new frequency or it's been 15 minutes since the last report for a given station, so when I switch antennas I will move frequency slightly to trigger the new report.  Now admittedly QSB or other conditions may change between the reports so you'll need to do this a bunch of times over the course of days and compile some records to get a clear idea of how each antenna is performing in certain directions.  This isn't hard science but it's more real-world than a smith chart or the occasional signal report from a station or two.

If you make use of the RBN I encourage you to donate on their site.

That's all for now...


So lower your power and raise your expectations

72/73

Richard N4PBQ

Richard Carpenter, AA4OO, is a regular contributor to AmateurRadio.com and writes from North Carolina, USA. Contact him at [email protected].

Amateur Radio Weekly – Issue 90

Fessenden Christmas Eve commemorative transmissions set
WA1ZMS, will again put his 600 meter Experimental Station WG2XFQ on the air for a Christmas Eve commemorative transmission.
ARRL

Christmas Poems
‘Twas the night before Christmas and all through the shack
The rig was turned off and the mic cord lay slack.
eHam.net

ISS SSTV activity planned for late December
The first session is being targeted for Dec 26-27 to celebrate 15 years of ARISS school contacts with the ISS crew.
AMSAT UK

AO-85 slow scan TV image likely a prank, not a test
“I can tell you that in South America, they are having some fun, and that our analog-to-digital to analog IHU processing of the audio seems to work very well at SSTV frequencies!”
ARRL

Spacing – the most important thing
“Written” Morse is almost impossible for me to decode.
W2LJ

Sorry, I’ve been on 2m FM again
It is just too easy and too convenient.
K0NR

Yaesu FT1DR Review
Very nice, but as with ANY radio it has a few bugs including with the accessories. We tested it side by side with it’s elder FT1D model.
N9EWO

Agnes Scott College first Amateur Radio station on a women’s college
The station was established with the enthusiastic support of Agnes Scott faculty in the Department of Physics & Astronomy.
Agnes Scott College

Historic Ocean Gate antenna field may be removed
The iconic poles emerging from the tidal marshes in Bayville’s Good Luck Point may soon disappear if a federal plan clears a historic preservation hurdle.
The SWLing Post

Impact of WWI on US Ham Radio
When the United States declared war on Germany in 1917, most radio stations came under government control, reserved for war efforts.
Southgate

Video

Skelton HF transmitting station
Skelton Short-Wave Transmitting Station: Its Role in WWII and the Cold War.
YouTube


Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at http://www.hamweekly.com.

Bargains – really?

Many of the larger dealers are offering special deals in the lead up to Christmas. But, are you really getting a bargain? For example, MLS have the FT1200 at less than £1000 after cash back. Maybe this radio is over-stocked as people prefer the IC7300 or the FT991?

Call me a cynic, but I think we are being offered discounts on radios that have not sold. As they say, “beware of Greeks bearing gifts”. If something looks too good there is probably a catch. Of course, if you really want one of the discounted rigs then now is as good a time to buy as any.

See www.phrases.org.uk/meanings/beware-of-greeks-bearing-gifts.html .


Roger Lapthorn, G3XBM, is a regular contributor to AmateurRadio.com and writes from Cambridge, England.

SLOWLY declining solar activity

The slide down from a solar maximum is (usually) slower than the climb from the minimum to the maximum. Very gradually, the sun is going “off the boil” and solar activity is slowly falling away. With each year for several years to come things will get progressively harder on the higher bands. Some are predicting the next maximum may be a “damp squib”, so enjoy the conditions while they last. It is quite possible that 10m will never be as good again in the lifetimes of many of us. Certainly 10m is already not as good as a year ago. Although Es is good at any part of the cycle in late spring and summer, F2 DX is best around the peak of solar activity. In the past 6m has supported worldwide DX at times, but I think those days are sadly over.

See http://www.solen.info/solar/ .


Roger Lapthorn, G3XBM, is a regular contributor to AmateurRadio.com and writes from Cambridge, England.

Chasing NDB’s In The Haida Gwaii



Over the past two weeks, I have spent some time reviewing several Perseus SDR recordings sent to me by Walter Salminaw in Victoria, B.C.




Walter is a hard core, mainly BCB DXer, who has a winterized vacation home in the remote Haida Gwaii Archipelago region of north west British Columbia, formerly known as the Queen Charlotte Islands.


He has built several permanent antennas, including loops and various beverages, mainly favoring Asia, the Pacific and over-the-pole. Some of his BCB recordings reveal mind-numbing signals from all parts of Asia ... not S9, but S9+++ and simply amazing.

I had asked Walter for some of his files that covered the NDB band, during periods of good propagation, so that I might be able to determine if my selected list of Alaskan beacons were actually on-the-air or not. There are several NDBs in Alaska that seem to be active, according to FAA information, but have never been heard by NDB DXers. Using Walt's recordings, along with his NW-pointed beverage, allowed my to have a deep listen into Alaska and finally get some answers.

It was exciting to tune through the very quiet band, from a northern perspective, and to hear many of the more 'difficult' (normally weak here) Alaskan targets at S9 levels. Unfortunately, going through my list of suspects, turned-up no sign of activity from any of them and explains why I have never been able to hear them from here! Like so many regions around the world, it seems that the once huge network of Alaskan NDBs is quickly being phased out up there as well.

An unexpected side benefit of going through Walt's files, turned up several instances of beacons in the Canadian north, that had been reported shut down, several years ago. It was surprising to hear them still as active as ever. Additionally, one NDB in Alaska, unheard here for two years and thought to be gone for some time, was found to be still happily keying away.

I've sent these findings to the RNA database for updating ... but it would have been nice to hear some of my long-sought after Alaskan 'ghosts', which seem likely to have been off-the-air for several years.

I would like to thank Walter for taking the time to share his Perseus files with me and for his unexpected contribution to the RNA database. Here are a few of the log's highlights:

DD UTC kHz Call mi New Location
--------------------------------------------------------------------------------------------------
22 14:07 214 DA Dawson, YT, CAN ... RNA shows QRT as of 2008 ...0 deg bev best
22 14:07 236 JB 'Laberge' Whitehorse, YT, CAN ... RNA shows QRT in 2011 ... 0 deg bev
22 14:07 245 CB Cambridge Bay, NU, CAN ... 0 deg bev best but betterr on ALA on 19th
22 05:35 266 GH Fort Good Hope, YT, CAN ... RNA shows QRT in 2006 ... 0 deg bev
22 05:35 269 ZW Teslin, YT, CAN ... RNA show QRT early 2015 ... 0 deg bev
22 14:07 277 YLC Kimmirut, NU, CAN ... 0 deg bev
22 05:35 284 YOC Old Crow, YT, CAN ... only heard in AK, YT and Scandinavia ... 0 deg bev
22 14:07 287 WJ Deline, NT, CAN ... RNA shows QRT as of 2011 ... 0 deg bev
22 05:35 290 YYH Taloyoak, NU, CAN ... 0 deg bev
22 05:35 326 VQ Norman Wells, NT, CAN ... RNA shows QRT as of 2012 ... 0 deg bev
22 05:35 338 YPX Puvirnituq, QC, CAN ... the only PQ heard on your files ... 0 deg bev
22 14:57 346 N9 Tumbler Ridge Municipal Apt, BC, CAN ... RNA shows QRT as of 2014 ... nw bog
22 05:35 350 RB Resolute Bay, NU, CAN ... 0 deg bev
21 13:56 352 RG Nikau - Rarotonga IAP, CKS ... nw bog
19 13:47 359 NDJ Bucholz AAF - Kwajalein, MHL ... nw bog but ALA NE/SW best
21 13:56 360 OX Iwo Jima, VOI ... nw bog
22 05:35 362 YZS Coral Harbour, NU, CAN ... 0 deg bev
22 05:35 378 UX Hall Beach, NU, CAN ... 0 deg bev
22 05:35 417 GBH Galbraith Lake, ALS ... RNA shows QRT as of 2013 ... 0 deg bev
--------------------------------------------------------------------------------------------------
 
courtesy: http://www.noaa.gov/
In the meantime, it looks like our planet is due for two more CME hits later tonight or early Saturday morning and the relatively quiet conditions of the past few nights will likely be badly disturbed on LF for the next few days ... something that has been happening far too much this winter as it seems that most of the prime time DX season has been one continual blast from the sun after another.
 

Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

Get Ready: Month-long Special Event for SKCC, the 2016 K3Y Celebration

Are you ready for the annual, month-long special event by the Straight Key Century Club (SKCC)? The SKCC Group membership is free, and celebrates the longest tradition of amateur radio: Morse code. But, not just any Morse code. The manual creation of Morse code by “straight” keys means no electronic origin, only mechanical. This is a month-long event, during January 2016, modelled after the ARRL Straight Key Night.

Here’s a video that I made showing my activity as the control operator of the special event station, K3Y/0, during one of the many shifts during January (2015). K3Y is the special event callsign of the Straight Key Century Club (SKCC). The special event operates each January. I’ll be doing this again, this coming month, January of 2016.

K3Y, the Straight Key Century Club’s annual January celebration, commemorates the club’s founding in 2006 following the American Radio Relay League’s Straight Key Night. A small group of participants wanted to extend the fun of SKN throughout the year. The SKCC is the result.

For the first three years, the club’s founders used K1Y, K2A, and K3Y as the celebration’s special-event calls. But someone cleverly noticed that a 3 is nothing more than a backwards, curvaceous E. This “KEY” event has operated under the K3Y call ever since.

The on-air party is open to members and non-members alike. It runs from 0000 UTC Jan. 2 through 2359 UTC Jan. 31. It’s a great time to introduce others to the joys of hand-crafted Morse code using straight keys, bugs, and side swipers.

This year, January 2016, we’ll be fielding K3Y operators in each of the 10 US call areas, plus KH6, KL7 and KP4, along with specially scheduled stations in each of six IARU continental regions. Your QSOs with event operators in all these 19 areas will be tabulated in the Statistics section and can be confirmed with a K3Y QSL card and Sweep Certificate.

+ The SKCC website is at http://skccgroup.com

+ The K3Y special event page is http://www.skccgroup.com/k3y/

73 de NW7US​

dit dit


Visit, subscribe: NW7US Radio Communications and Propagation YouTube Channel

Sorry, I’ve Been On 2m FM Again

This recycled post from 2008 is still accurate, but I do have my HF antenna up and recently used it for the CQ WW SSB Contest.

FT-7900R_thumbI was looking out the window the other day and noticed that my wire HF antenna is laying on the ground. Hmmm, probably doesn’t radiate very well that way. But if I put a long, lossy coaxial cable in line, the SWR will still be good at the transmitter. And I can tell my buddies that it works just fine because “I can work everyone that I hear.” (What a dumb thing to say.)

This made me realize that most of my ham radio activity lately has been on 2m FM. Actually it has been on 2m and 70cm FM, as I tend to lump these two activities together. These days, my VHF/UHF FM rigs have at least 146 MHz and 440 MHz in them (FT-7800, FT-8900, etc.). I cruise down the road and flip on the rig, talk to the locals, talk to the XYL, etc. It is just too easy and too convenient. It fits the mobile lifestyle, whether it means operating a mobile rig in the car or grabbing an HT to take along on a business trip. (I used to run HF and SSB VHF mobile but found that the rigs were rarely used, so I removed the gear from my vehicle.)

Of course, I need to apologize to the rest of the ham community for this failure to act according to accepted social norms. You know how it is…Real Hams operate HF, weak-signal VHF, microwaves, etc……almost anything that is not 2m FM. Every so often I hear that comment about “well, those techs just hang out on 2m FM,” implying that those guys are permanently stuck in ham radio middle school, unable to graduate to the next level. Or sometimes the FM operators are referred to as having “shacks on the belt” which are dependent on the “box on the hill.” The main message is that 2m FM is just too easy, too plug-n-play, too much like an appliance….too convenient. We certainly can’t have that!

Don’t get me wrong…I enjoy HF, DXing, contesting, digital modes, almost anything to do with amateur radio. That’s the cool thing about the hobby…so many bands, so many modes. One of my favorite activities is operating the major VHF contests. (I’ve even been known to make a few CW contacts.) But on a day-to-day basis 2m FM just seems to fit in better.

Some people call 2m FM the Utility Mode, because it is the mode that gets the job done. Last week, we had a weather net activated to track thunderstorms and a few tornadoes. Did this happen on 40m? I don’t think so. Two meters carried the load. Where do most of the ARES and RACES nets meet? Two meters. How is most public service communications handled? Two meter FM. Even some hard core HF DX enthusiasts are known to flip over to 2m FM to tell their buddies that the DXpedition to a rare country is on the air. It is the Utility Mode.

Over the weekend, I was driving through the mountains and heard an aeronautical mobile working stations simplex on 146.52 MHz…lots of fun. Another time, I heard a station calling about 80 miles away (I was in a high spot) and I had the pleasure of making that contact….again, on 2m FM. A few weeks ago, I operated in the Colorado 14er Event from the summit of Pikes Peak. Since many of the mountaintop stations had hiked up, the most popular mode of the day was (you guessed it) 2m FM.

So sorry, I have been hanging out on 2m FM. I’ll try to get that HF antenna back in the air one of these days.

73, Bob K0NR

The post Sorry, I’ve Been On 2m FM Again appeared first on The KØNR Radio Site.


Bob Witte, KØNR, is a regular contributor to AmateurRadio.com and writes from Colorado, USA. Contact him at [email protected].

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