Back on 10 Meter FM

I have been hearing everyone rave about the improving conditions on the HF bands, especially some great propagation on 10 Meters. Then I came across this posting by G4VXE: The Return of 10M FM. Ah, yes, I do recall having a blast running FM on 29 MHz years ago!

This triggered the thought that the FT-8900 transceiver in my car has 10 Meters in it. Lately, I have been using this quad-band FM rig (10M, 6M, 2M & 70 cm) like a dualband 2M/70cm rig. I almost forgot that it had the other two bands. I plopped a 10 Meter Larsen antenna on the SUV roof and reconfigured the coaxial cables and diplexers to get the right RF to the antenna. Suddenly, I was back on 29.6 MHz FM calling CQ. K8LF (Jerome, mobile in Virginia) came back to my call and we had a nice little QSO.

10M FM is a little bit counter intuitive (some people would say “makes no friggin’ sense at all!”). Here we have a high frequency band which can introduce fading and phase distortion (that destroys FM signals) being combined with our most inefficient modulation format (FM). Why on earth would anyone mess around with this combination?

I think FM is fun on 10 Meters for the same reason it is fun on VHF and UHF. You can be tooling down the highway with no radio noise at all and if the band is open, a signal pops through the squelch. Forget all of the static and Donald Duckness of SSB communication. When the signal is strong, FM is loud and clear.

Its good to have 10 Meters back again!

73, Bob K0NR


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

Two Transistor Tranceiver for Ten

With ten metres opening up it seemed the right time to try building Roger G3XBM’s latest project: the XBM10-2. Roger describes it as probably just about the simplest CW transceiver possible for use on 10m, using just two transistors to produce about 60mW out.

This was my first attempt at construction since my radiotherapy and chemotherapy and I found it to be quite a struggle. First of all I found it difficult to concentrate while trying to work out the perf board layout. After that I got a bit frustrated with constantly juggling three pairs of spectacles due to my eyes apparent inability to focus at different distances. I also found soldering difficult due to my hands shaking whenever I brought the iron bit close to a component. I created quite a few solder bridges which I then had to clean up.

Construction took much longer than I would have taken a few months ago. But in the end it did work. Though not on ten metres yet. I’m waiting for a 28.060MHz crystal from the G-QRP club shop before I can try it out on the air.

One issue I have found (which Roger also comments on) is that the rig has a major chirp. It is definitely not T9 and I don’t know whether it is possible to improve on that. But at least it has character. If you hear a weak, chirpy signal near to the 10m QRP activity frequency give it a call. It might be me!


Julian Moss, G4ILO, is a regular contributor to AmateurRadio.com and writes from Cumbria, England. Contact him at [email protected].

Estonia on 30m, and Antenna-Days 3-5 in My Son’s Words

This antenna works great! In my earlier post I mentioned that SWR was high on 30m, but last night I let the automatic tuner on the TS-440S match it — and ES3AX gave me a 579 from Estonia! 4Z5MU (Israel) went into the logbook last night, too, but that was on 20m.

A couple weeks ago I published my son’s take on Antenna-Days #1 and #2. Here is his take on the rest of the project:

Helping Dad Build His Antenna, Days 3-5
by Antonio Mitchell, October 20, 2011

Building the antenna has taken a bit. It has been fun for the most part. We finally have it almost finished. The past couple days have been really busy. I hope that I can remember them so that I may provide my readers with an understanding of what we did.

It was pretty chilly on Monday. The wind was blowing pretty hard so we did not get to go on the roof. We spent the day getting the antenna wire cut and put onto the balun. Once we were done with putting the antenna wire on the balun my dad had to put it on to the pulley attached to the aluminum pole. My dad and I put the pole against the house and took the two ends of the antenna wire and tied ropes to them. After that we took the ropes and tied them to some trees. It was so windy that it was hard to hold the pole. While I was holding the pole my dad took the SWR meter and tried to figure out if he needed to add or take away some wire from the connectors on the balun. It did not work so well. [Being so close to the ground, SWR was sky-high on 40m.] We took the pole and the ropes down and called it a day.

On Tuesday we first shot a weight over the house so that we could get a safety line over the house. The safety line was for when Dad went on the roof. It took us quite a few tries to get it over the house. Once the line was over we attempted to put a line over the tree which is where one end of the antenna wire is going to sit. Using my slingshot did not work. My dad went up to Runnings to get ground wire and PVC pipe to build a potato launcher. It took him a little while to find all of it. When he came home we assembled the potato launcher. After supper we tried to get a line over the tree, but it was dark and windy. We did launch a potato with a screw in it. It did not go over the tree because of the wind. It went over a couple trees. We could not find the potato.

Wednesday we did manage to find the potato. We had to cut some of the line we used. My dad decided he would get the line into the tree when he was on the roof. A friend of my dad came over and helped put the aluminum pole with the antenna attached and the other pole into the tripods. The antenna is finally up! My dad just has a few final touches to do and then it will be up there for good I hope. Last night my dad was able to talk to some people on the air using the antenna that is now on the roof.


Todd Mitchell, NØIP, is a regular contributor to AmateurRadio.com and writes from Minnesota, USA. He can be contacted at [email protected].

Tips for a Sucessful Pumpkin Patrol

With Halloween just a few days away, the Pumpkin Patrols will be rolling out. Here’s a few tips to keep in mind if this is your first one. If you’ve done PP before, feel free to post other tips based on your experience. Hopefully this year will be “uneventful” but in a good way!

Happy Pumpkin is Happy!

Courtesy of KB2MOB

So how do you keep yourself occupied for those few hours you are sitting in your vehicle, watching out? How about a nice audio book? Toss it into your car’s CD player or rip it into your iPod or mp3 player and play it through your stereo. No headphones, as you need to also have your radio’s volume up to hear the check in calls on the repeater. Why not a Nintendo DS or a game on your smart phone? Well, you need to be using your eyes to make sure no one is doing something they are not supposed to out there. Music is good too.

If you do see someone, the number one rule is, DON’T GET OUT OF YOUR VEHICLE. Your job is to observe and report. Call it in to the net control and they will alert the police. Get as much info as you can. Is there a car? Make, model and color? A license plate number? How tall were they? Did they wear hoodies? Hair color? How old did they look? The more info you have to give to the police, the easier it is for them to find the people. Having a notepad and something to write on and with is a must have too.

And remember to bring a little snack and drink in case you get hungry or thirsty. And also, and I can’t stress this enough, GO TO THE BATHROOM BEFORE YOU GO OUT. I’m sure you catch my drift as to why right? Nothing is more embarrasing then standing outside your car, and missing your check in. Yeah.. it can happen.

So anyone else have any tips? Share them here.

73.

Rich also writes a Tech blog and posts stories every Tuesday and Thursday on Q103, Albany’s #1 Rock Station website, as well as Amateur Radio stories every Monday thru Friday on AmiZed Studios and hosts a podcast called The Kim & Rich Show with his fiance’ Kim Dunne


Rich Gattie, KB2MOB, is a regular contributor to AmateurRadio.com and writes from New York, USA. Contact him at [email protected].

Ham Nation 23

Leo Works The Pileup

Hosts: Bob Heil (K9EID), Gordon West (WB6NOA), George Thomas (W5JDX), and Leo Laporte (W6TWT)

Indoor antennas, etching your own PC board, transmitting remotely from 3000 miles away, and more. N4PY Software provides the software for the Remote Mirrored Radio setup. The website is at www.n4py.com.

Guests: Terry Schieler (W0FM)

Download or subscribe to this show at http://twit.tv/hn.

We invite you to read, add to, and amend our show notes at wiki.twit.tv.

Thanks to Joe Walsh who wrote and plays the Ham Nation theme.

Thanks to Cachefly for the bandwidth for this show.

Video URL: 

http://dts.podtrac.com/redirect.mp4/twit.cachefly.net/video/hn/hn0023/hn0023_h264b_864x480_500.mp4

Video URL (mobile): 

http://dts.podtrac.com/redirect.mp4/twit.cachefly.net/video/hn/hn0023/hn0023_h264b_640x368_256.mp4

MP3 feed URL: 

http://www.podtrac.com/pts/redirect.mp3/twit.cachefly.net/hn0023.mp3

People: 

Dr. Bob Heil, K9EID, is the founder of Heil Sound and host of TWiT.tv's Ham Nation which streams live each Tuesday at 6:00pm PT (9:00pm ET) at http://live.twit.tv. Contact him at [email protected].

PARP 48–Now Available

PARPiTunesThe Practical Amateur Radio Podcast, episode 48 is now available to download or stream.  You can subscribe via iTunes, Zune or stream directly from MyAmateurRadio.com.  Want to stream on the go from your favorite smart phone device?  You can do that as well from our mobile site.

In this episode I discuss all that awaits those US Technician class operators once they upgrade to the general class license.  Of course, I’m talking about the world of HF.

As a member of both the ARRL and RSGB, I share what I feel is the importance of both belonging to and supporting our national organizations.  I discuss briefly the RSGB upcoming extraordinary general meeting taking place on 19 November and encourage all RSGB members to educate yourself and vote.   Links are provided in the episode 48 show notes available here.

During our featured website segment I introduce listeners to the DXCoffee.com website.  Tomas Mesta, K6THM provides the featured Elmer Connection article on MyAmateurRadio.com.  Finally I round out some of my own amateur radio adventures in the last month.  Thank you for listening. 


Jerry Taylor, KD0BIK, is a regular contributor to AmateurRadio.com and writes from Colorado, USA. He is the host of the Practical Amateur Radio Podcast. Contact him at [email protected].

Handiham World for 26 October 2011

Welcome to Handiham World.

cartoon sun
Experiencing a CME
Remember last week’s praise of the 10 meter band and the great DX conditions?  Well, it’s way different this week as the HF communications conditions have been tanked by a CME, or “Coronal Mass Ejection” from the sun.
I subscribe to a service from Spaceweather.com that provides me with a timely email about such solar events.  On Monday, the day of the solar event, I was able to communicate on most of the HF bands quite well early in the day, but by mid-afternoon it was clear that something was happening.  Sure enough, the email had arrived in my inbox, alerting me to the fact that a CME event had occurred:
“A coronal mass ejection (CME) hit Earth’s magnetic field on Oct. 24th around 1800 UT (2 pm EDT). The impact strongly compressed our planet’s magnetosphere and may have exposed geosynchronous satellites to solar wind plasma. Mild to moderate geomagnetic storms are possible in the hours ahead as Earth’s magnetic field continues to reverberate from the hit.”
Later in the evening on Monday I checked in with a group of friends on 1.902 MHz.  It was 20:00 Central Daylight Time, and after sunset.  Normally the 160 meter band would be really starting to open up that time of the evening, but conditions were so bad that sky wave communications were almost non-existent. Ground wave contacts were possible, and because several of us live within the range of ground wave communications, we were able to carry on a conversation. It was clear that not everyone knew what was happening, but by this morning the news had hit the popular media, with stories about the Northern Lights being observed even in the southern United States, a rare occurrence.  Displays of the Northern Lights are common in the far north, as you might expect, when matter and radiation are ejected from the sun in the direction of Earth reach and disrupt the planet’s magnetosphere.  CME events are actually quite common as the sunspot cycle climbs to maximum, and there may be several each day.  However, not all of them are as strong as this week’s, nor are they all directed toward Earth. You can find out much more about CME events on Wikipedia or Spaceweather.com, but for our purposes we simply need to know that solar weather can bring a temporary halt to effective sky wave propagation.
It is tempting for those of us who have experienced multiple solar cycles as amateur radio operators to assume that most everyone will know why they turn on their HF radios and find comparative silence. There may be odd swishing sounds or hissing.  Tuning around can yield more “birdies” (mixer products generated within the radio) than actual signals.  We now have lots of new Technicians and Generals who have never been in this situation.  That reminds me of the time when I was a new General and had never experienced the effects of a CME.  It was a time of many sunspots, good DX, plenty of activity on the bands, and contacts with low power were “easy pickings”.  Imagine my thought processes when I switched on the receiver (we had separate transmitters and receivers in the late 1960’s unless we had lots of money) and there was nothing but a gentle hiss.  I immediately assumed that the antenna was disconnected – that’s exactly what it sounded like, so it was a reasonable thing to check.  When that idea fizzled, I actually took a hike out into the back yard to look at the antenna.  It was till up there in the air, feedline connected, looking fit as ever.  
This was a real head-scratcher!
Back inside I went to sit down and puzzle it out.  RF gain, check.  Antenna switch, check. All vacuum tubes in the receiver lit up, check. Broadcast stations coming in on medium wave, check.  Eventually I must have talked with a fellow radio club member and gotten the lowdown on solar weather events like that one, but it always stuck with me that I felt that the antenna must not have been connected – that’s how bad it was.  You can well imagine a new ham today experiencing the same thing with this week’s solar weather and thinking that they are either doing something wrong or they have some kind of an equipment or antenna problem.  
So what do you do about it?
This is simple, and the method preferred by lazy operators:  Just wait and do nothing.  Band conditions will slowly improve, though it may take several days.  You can have fun keeping an informal log of stations you hear on the various bands, perhaps even charting the return to normal conditions band by band, starting with 160 or 80 meters, where sky wave will return quickly, often within 24 hours. It will probably take longer for activity to return on bands like 10 meters.  By yesterday 75 meters had cleared up pretty well and regional nets were back in operation. 
For Handiham World, I’m…

Patrick Tice
[email protected]
Handiham Manager


Pat Tice, WA0TDA, is the manager of HANDI-HAM and a regular contributor to AmateurRadio.com. Contact him at [email protected].

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