Archive for the ‘Uncategorized’ Category

Heard in Prague

I came a little closer to my objective of trying to make a DX contact using only a hand-held radio this afternoon. After dropping Olga off in town for a hair appointment I went up to my usual haunt Watch Hill accompanied my my 2m and 10m hand-helds. I had just stopped on the top when I heard Geoff G4WHA/P calling CQ WOTA from Kidsty Pike on the GP300 which was on my belt. He was a bit noisy as the radio only had the rubber duck on it so I foolishly decided to swap it for the 5/8 telescopic before calling him. Unfortunately in the minute or so it took to swap over the antennas I lost him and didn’t hear him call again.

Colin 2E0XSD called me and we had a brief chat, then I made several other calls hoping to catch Geoff or anyone else who happened to be listening. After about five minutes Colin called again to say that he was hearing activity on 10m FM. I got out the Intek with the 4 foot whip and started listening around. I did hear some activity, including what sounded like a French station down in the noise on 29.600 who was not clearing the FM calling channel. I also heard what sounded like Russian on 29.620.

After numerous calls on 29.600 I heard a CQ from OK1AQW near Prague in the Czech Republic, loud and clear. I called him but he replied that I was too weak to copy. A couple of minutes later I started calling again and OK1AQW came back to me with my full callsign! I replied “OK1AQW this is G4ILO/P you are 55 in IO84 QSL?” but got no response from him. I repeated his report several times but heard nothing. I don’t know if a full 4W would have made a difference, but a couple of days ago I adjusted the full power level of the H-520 back to 2.5W to try to mitigate the problem of high current draw when the SWR is less than perfect. So that was a gotaway, unfortunately.

I didn’t hear any more DX on 10m, but I did have a QSO with Roger G0MWE from Dearham who was using a new FT-897D and pleased to hear some activity on 10m. Roger suggested I should use a better antenna which would certainly be possible to erect up there but that would defeat the object of using the hand-held. But I’m sure with perseverance I will eventually achieve my objective.

A community in mourning

Once again our quiet English backwater of West Cumbria is in the news for the wrong reasons, this time after hitherto mild mannered taxi driver Derrick Bird went on the rampage with a sniper rifle killing 12 people and injuring 11 others – many apparently for no reason other than being in the wrong place at the wrong time – before killing himself. This kind of event is traumatic at the best of times, but in a sparsely populated area there are few people who don’t know, or know someone who knows, someone who witnessed or has been affected by the atrocity.

Britain has very strict gun control rules. Gun owners have to give good reason why they need to own a weapon and confidential enquiries are made as to their soundness of mind before granting permission. Derrick Bird had apparently legally owned his weapons for 20 years. But understandably questions are now being asked as to why people who have no professional need to own weapons capable of such carnage should be allowed to keep them in their house.

The sporting guns lobby has reacted with, it seems to me, rather disrespectful haste, to stem cries for even tighter controls, using arguments such as banning guns would make it impossible for Britain to host the Olympics. I doubt if the relatives of the 12 innocent people who were killed could give a damn about the Olympics at this moment.

There are many other silly arguments being raised against tighter controls. It is argued that much gun crime is carried out with illegally owned weapons, so making it harder to legally own one wouldn’t make a difference. But if Derrick Bird and others who use guns in crimes of rage or passion had to obtain them illegally first they would probably just resort to shouting or using their fists like the rest of us.

Another daft argument is that cars can kill and no-one advocates banning the use of cars. But quite apart from the fact that cars are useful to almost everybody whilst guns aren’t, it is also true that serious road accidents are examined to see if road safety legislation could be improved in order to try to prevent such accidents in the future. So I think that examining the laws regarding gun ownership is entirely appropriate.

If people own guns solely for sporting reasons, do they need to keep these weapons at home? Perhaps they should be securely kept at a licensed gun club or a police station and signed out for a specific period of time and purpose.

If Derrick Bird had not been able to get his hands on his weapons whilst he was thinking murderous thoughts, 13 people would still be alive today and 11 more would not be in hospital. Can anyone seriously argue that their sporting freedom is more important than that?

Dead mic

When using a hand held radio with a long whip antenna for more gain I often prefer to use a speaker mic so I can hold the radio in a steady, upright position. I have a speaker mic for the Kenwood TH-F7E (which fits the old TH-205E as well) and I have one for the Motorola GP300. But needless to say neither of them fit the Intek H-520 Plus 10m rig because the wiring and pin spacing is different. The official Intek speaker mic is rather expensive so I looked on eBay and found a speaker mic for “Alinco Icom Standard 2-pin” with the correct pin spacing for less than £7 including postage from Hong Kong.

When it arrived I decided to check what the audio sounded like by listening on the K3 while I made a call. The mic keyed the radio up but there was no audio. To make troubleshooting easier I swapped the antenna for a dummy load and audio was then heard!

I then tried a variety of different antennas and power levels and was soon pulling my hair out. I would hear audio with the dummy load connected and none as soon as I switched to an antenna. Eventually I tried the very short antenna supplied with the H-520 on the lowest power setting, 0.1W and I heard audio. It was looking very much as if the presence of radiated RF was somehow interfering with the audio. But the amount of RF required to cause the problem must be small as 0.1W on any of the larger antennas resulted in no audio from the speaker mic.

I didn’t know whether the RF was causing a problem with the microphone or the radio. I tried clamp-on ferrites at both the mic end of the cable and the plug end but neither made any difference so I was none the wiser. This particular made-in-China speaker mic is held together with screws that require a nonstandard five pointed key to undo so I couldn’t look inside to see if it used screened cable. I decided to give up on that speaker mic and do what I could have done in the first place if I hadn’t thought spending seven quid would be an easier solution.

In my junk box was the business end of another cheap Chinese speaker mic from which the cable had been ‘borrowed.’ I noticed in the past that the curly cables used for these speaker mics are often not screened. I happened to have a length of stereo audio cable with each channel separately screened. I wired this up to the spare speaker mic and attached suitable 2.5mm and 3.5mm jack plugs to the other end. When I tested it I now had transmit audio even on high power with the 4 foot telescopic whip!

At this time I don’t really know whether the mic I bought was at fault because I don’t have another radio that uses the same size plug spacing to test it with. Given that I have been less than impressed with other aspects of the H-520’s performance I wouldn’t be surprised if it wasn’t the radio that has inadequate filtering for RF picked up on the speaker mic cable.

Change of emphasis?

I have never owned a Ten-Tec transceiver (although I once built and used one of its transverter kits) but I always thought that the thing the company’s products were most renowned for was their good support for CW operation and excellent QSK. So I was surprised to visit the Ten-Tec website a few days ago and see beneath the logo the slogan “The SSB Company.” Obviously CW isn’t seen as so important these days.

In the last couple of years Ten-Tec has dropped its kit range, its QRP Argonaut transceivers and most recently has been in the news for announcing that it will be rebranding the Chinese-made HB-1A QRP CW transceiver as a Ten-Tec product. I suppose someone somewhere has decided that this makes commercial sense but it doesn’t seem to me like the way to hold on to a reputation as an innovative indigenous American manufacturer of quality radio products for the discerning amateur.

Antique Wireless Association Journal – On-Line

I recently featured some material available from the Antique Wireless Association and had to go a little deeper.

They have a wealth of information available on their site with some of their journal’s online articles.  Great articles on vacuum tubes and such – but much, much more.

I found a great little article called “Working With Crystal Control: A ‘Part 15′ Broadcast Band Transmitter “, the transmitter setup on the left.  Really neat article (I think I must….want to build one of these)………  The image on the left is from that article – not to difficult to build and learn!!!

As I understand it, you can purchase a CD with back copies of this magazine.  I just might look into that.  Kinda sounds like the enjoyment I get when I receive that little journal from the G-QRP club – SPRAT.  When that hits my mailbox, I know it’s getting stuffed in my backpack for enjoyment down the road.

One important thing to keep in mind with the AWA Archives is how well they not only demonstrate radio history, but how you can recreate it and learn from it.  What a better way is there for a budding QRPer to learn where he’s going, but get a hands on demo from where other hams have been?

Below are only a few examples of the neat articles you’ll find on the AWA website:

Key and Telegraph  by John Casale, W2NI
President Taft’s Telegraph Key

Building a 1929 Style Hartley Transmitter  by Scott M. Freeberg, WA9WFA
Need a transmitter for our 1929 QSO Party? Build it in one week-end!

Breadboarding  by Richard A. Parks
More Adventures With Transistors

The Vacuum Tube  by Ludwell A. Sibley
Tube Bases and the Asbestos Hustle

Restoration of Shellac Finishes on Older Radios  by Lane Upton
Don’t Strip That Old Finish–Save it Instead!

A nostalgia trip for the old-timer; an eye-opener for the newbie.

The Beginnings of Radio Central  by Ralph Williams with Marshall Etter, Bob McGraw and Chris Bacon

Pupin and Armstrong lay an egg–An Antique Radio Gazette reprint.

A Solid-State Filter Choke or Field Coil Replacement

Go ahead and check them out at:

http://www.antiquewireless.org

http://www.antiquewireless.org/otb/archive.htm –  a direct link to the journal archives

Great Cockup

In British English, a “cockup” is rude slang for a mistake, usually implying carelessness. Great Cockup is the name of a rather undistinguished grassy Wainwright summit near the northern edge of the English Lake District. I don’t think there is any connection between the slang meaning and the name of the hill. But whilst my decision to go for a walk up Great Cockup on Bank Holiday Monday wasn’t a mistake, from a radio point of view it wasn’t a success either.

I parked the car near Overwater and set off on quiet lanes and then a grassy track on the western side of the fell with great views over Bassenthwaite Lake.

The summit was reached after about an hour of walking. Despite being the end of May a cold north westerly breeze was very much in evidence on the summit. By descending a few feet it was possible to get away from the breeze, but as soon as it dropped clouds of black insects appeared and covered everything. It was necessary to brave the full force of the wind in order to eat the lunch Olga had prepared without an accompaniment of fresh insects. Despite this one managed to find its way inside the Intek H-520 – it was still walking around the inside of the display window this morning!

Lunch over, I got the radios out. I had taken the Intek H-520 hoping to make some DX contacts on 10 metres, but despite making numerous calls on the 10m FM calling frequency, 29.600MHz, I had no takers. There was obviously some enhanced propagation as I heard a French station and also some activity on a repeater on 29.660MHz.

I heard a French station call CQ on 29.600 and when I replied to him he said “UK stations, please QSY to 29.205MHz.” I was unable to oblige because a) my radio only tunes exact 10kHz multiples and b) when I did try to transmit anywhere near there the radio cut out due to the SWR being too high on that frequency. I’m afraid the H-520’s intolerance to even moderate SWR renders it almost unfit for purpose and if I hadn’t modified it to work on the 10m band I would probably consider returning it under warranty. As it is, probably the only option is to reset the power control to limit the power to 2W on the “4.0W” setting. As noted previously, when received the radio delivered less than 3.0W even on the UK CB band and I now suspect this was done deliberately by the manufacturer to try to mitigate this problem, knowing that the majority of CB users would be none the wiser.

While listening for the French station I heard what sounded like an APRS packet on 29.210MHz. I don’t know if that is a recognized APRS frequency but it would be interesting to monitor that frequency with a decoder to see what is being transmitted.

I tried the Motorola GP300 on 2m with the 5/8 telescopic antenna but was unable to raise any contacts on that band either. I did hear some activity on the channel set up for GB3EV but which I suspect may be the GB3BT repeater on the north east coast which is on the same frequency.

Back home I heard and worked Colin 2E0XSD/P who was on Ling Fell (behind the ‘hump’ on the left of the middle photograph) using the H-520 inside the shack with the 4ft. whip antenna. On 2m I worked Derek 2E0MIX/P who was up on Scafell Pike, England’s highest mountain. So had I gone out a bit later I would probably have made not just a couple of contacts, but a couple of summit to summits. Never mind. It was a pleasant walk and now I have the excuse to go again another time.

Interview With Bryce, KB1LQC And Brent, KB1LQD Of RITARC | Part 2 Of 2

Their vision is bold and their commentary on the state of ham radio is noteworthy. We are, in their words, at a crossroad; one that is deciding the direction of our hobby into the middle of this century and beyond.

Who else but KB1LQC and KB1LQD, young men at the beginning of their careers, could deliver a message to those capable of creating required change?

What kind of ham radio related activities is RITARC involved in these days?
The RIT Amateur Radio Club is one of those clubs I feel is taking a different approach to the hobby. As I stated earlier, there is a difference between the traditional outlook on the hobby and the demands of the current generation of students in high school and college. K2GXT is very much into utilizing amateur radio for various technical aspects, not just operating.

The club has been promoting various uses to advance technology rather than simply operating HF or other bands. As a group we are also very good at promoting amateur radio along with our club to the student body as well as RIT administration. For the last two years straight we’ve won the RIT Clubs Showcase “Best in Show” award which pitches 10 clubs against each other to present themselves to RIT administrators who then vote for their favorite and most innovative club.

We know how to make our presence, effectively get our point across, and deliver a memorable presentation.

For example, we recently redesigned and constructed a 12 foot long RC blimp from scratch which utilizes ATV video on-board. Just search YouTube for some of the videos uploaded this past May! Brent is designing an optical communications system for long distance light transmission. So far he has obtained about 1/4 mile from his efforts. This may not be amateur radio but many techniques learned from the hobby have been utilized.

We just obtained the ability to design, etch, and construct our on PC boards right in our clubroom. Finally, this summer I hope to design a simple Software Defined Radio much like the softrock kit while here at RIT. Both the light receiver and SDR have the potential to become a K2GXT kit for promotional purposes.

We may be veering off from most college clubs but we are seeing a huge amount of interest from the student body. Next year may be a defining moment for the clubs’ membership. Today’s students just don’t seem to be impressed with long distance QSO’s or repeater contacts, at least initially.

Many of my peers might not truly realize that a cell phone is simply a radio. We are becoming quite an abstract society with the technology granted to us. Brent and I have found that by introducing the hobby through alternative methods such as projects and other technological advancements with amateur radio, we are able to grab the interest of younger people.

Tradition will never die, once in the hobby they are exposed to the numerous traditions of DXing, QSL cards, etc. I am excited to see where the RIT Amateur Radio Club is able to go with this next year.

What mode of operation is trending within the club?
RIT keeps most of us busy enough with its academic rigor combined with the quarter system (10 week courses, very fast paced) that we don’t get to operate nearly as much as Brent or I would enjoy seeing. The club did do a lot of operating during this past Fall (2009) and focused mainly on 20 meter SSB and PSK31. Many new club members did a fine job and were interested but unfortunately everyone got hit pretty hard winter quarter with school commitments, it’s a problem many organizations at RIT deal with, the quarter system has obtained a love-hate relationship.

This summer Brent and I are redesigning the clubroom which is located underground in the academic tunnel system to be much more operation friendly. It was setup a few years ago bye people with great intentions but not too much HF operating experience. We hope to make it really inviting to sit down and grab some DX!

What about third year varsity oarsmen for the NCAA Division 3 crew team?
First off, Brent and I no longer row for RIT. Brent obtained a rather bad injury in the beginning of his Varsity year (2nd year) and I had to leave this past year about halfway through my third year rowing due to academics. Rowing is one of those sports that few truly understand. It’s an intense commitment and being proactive, I decided it was better to leave the team than to let my grades suffer; I was going to bed at 4:00am and getting up at 5:30am several nights a week.

Very few people knew that the rowing season goes six days a week and from four to six hours a day from early September through late May. Rowing has been “grandfathered” into the NCAA so it follows the US Rowing regulations as opposed to NCAA regulations; simply meaning that we practice full speed all year.

I have learned a lot about pushing myself both mentally and physically from being on the team as well as how to manage my time. I thought I was busy in high school!

To put it in perspective, I’m not where near the normal height of a rower, most mistook Brent and I for coxswains! Perseverance, mental toughness, and having the ability to deal with a large amount of self-induced lactic acid pain allowed me to row for RIT. Since I am shorter than most rowers I had to push harder just to obtain the same speed as my peers who had more leverage on the oars.

A good analogy for what it’s like to row a 2 Km race would be to put 90 or so pounds on a leg press machine and do 225 leg presses in six or seven minutes without stopping. Crew will be one of those adventures in college that I will miss!

What are your goals after graduation?
Both of us are toying with the idea of Graduate school. Ironically or not, both of us are deeply interested in analog electrical engineering. We both have an interest in further studies involving the analog/mixed signal design field. If not, both of us are obviously RF geeks and want to do something with radio communications.

I have also found an interest in UAV’s (unmanned aerial vehicles) and similar areas so maybe I’ll be able to find a job that blends the two together! Too bad NASA cancelled the constellation program… HIHI.

Where do you see ham radio in the year 2020?
This is a big one. I honestly can’t say for sure but I will say that the hobby is at a crossroads. I feel that many radio amateurs are committed to keeping traditional views of amateur radio the main course of the hobby. This includes things such as DXing, QSL cards, SSB, CW, etc.

Honestly, I don’t see the hobby grabbing the attention of a large majority of the coming generations if it stays on that course. Yes, we have small niches involved in building satellites, software defined radios, and other very technical areas but overall the hobby is very much focused on the same goals it was in the 1950’s and 1960’s.

I’d like to see the hobby as a whole take a step back, look at what the 15-25 year old generation is more responsive to, and go from there.

It is apparent now that mobile communications has been integrated with personal computers which have been further integrated with the Internet. The key word for today’s generations is “integration”, building a 40 meter CW rig may be neat but in the overall picture we have more people who could potentially be involved in amateur radio who are interested in much larger integrations of technology. As radio amateurs we have a critical advantage, spectrum. Use it or loose it as they say.

The engineering field itself is seeing declining interest, why can’t we become the “De-facto” hobby for students interested in engineering? Not just electrical engineers either. Aerospace, mechanical, software, and other engineering disciplines all have the ability to integrate one form or another of amateur radio into their projects. So what if it’s not DXing. Maybe they will become interested in that too!

When amateur radio first started in the early 1900’s think about what it was then. Radio technology was still in its infancy. A brunt of the hobby was involved in experimenting with technology for almost half a century; if you wanted to be on the forefront of communications technology then you got your amateur radio license.

Studying the early years of amateur radio has shown me that around the time-frame following World War II our current traditions were created. Think about it, radio technology allowed for easier communications around the world with surplus equipment. We must move on!

I personally feel we need to look back into our roots of experimenting and try to use the radio spectrum available to us for more technologically advanced applications. This should grab the interest of many high school and college aged people with an interest in technology.

I’ll end this with an analogy. Don’t try to sell a car to someone who isn’t interested in purchasing a car, it’s much more effective to sell a car to someone who is interested in buying one in the first place. Now tell me where amateur radio can improve its promotional campaigns?

73 from shack relaxation zone.


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  • Matt W1MST, Managing Editor