AmateurRadio.com

A couple of days ago I decided to take another look at the Spectrum Communications Off-Air Frequency Standard (OAFS). It had been suggested that its failure to work might be the result of a solder bridge or similar error. I had a good look at the board using a high power magnifier and found a pair of pads that were suspiciously linked to ground. A moment’s work with the desoldering braid and sure enough there was a solder bridge exactly the width of a PCB track.

Having found a fault I was optimistic that the board would work. The setup adjustments were completed OK. But instead of hearing BBC Radio 4 in the speaker as the instruction sheet suggested I received a loud heterodyne with some speech faintly in the background, like listening to an AM signal in SSB mode with the BFO a couple of kHz off-tune.

I was looking at the Spectrum Communications advert in Practical Wireless to check how the ferrite rod was mounted and noticed that the description said “Background heterodyne whistle at 2kHz confirms lock condition.” That is exactly what I was getting. Odd that the instructions didn’t mention it though. Nevertheless I gave a cheer and went ahead with installing the board in its box.

My happiness was short-lived when I put my frequency counter on the output. It was 10MHz sure enough, but it was not phase locked to anything. I was only receiving the output of the uncontrolled 10MHz crystal oscillator which could be tuned a few tens of Hz either side of 10.000MHz. No adjustment I could make would cause lock to occur.

Comments made to my original post about this suggested that I might have problems with the OAFS as I am not in a good location to receive a strong signal from BBC Radio 4. I’m unhappy with the amount of time I’ve wasted on this. I think it would be best to write it off and forget about it. I’d rather not be bugged by it or have it taking up scarce space in the G4ILO shack. If anyone would like to have it and see if they can make it work then it’s yours for the cost of the postage.

from e-Bay, after being inspired by Jim W1PID. A 12V 9800 mAh Lithium Ion battery to have for the KX3.  It’s smaller and lighter than the 12V Sealed Lead Acid battery I am currently using.  It will be coming from overseas.  So now it’s a race – which will arrive first the KX3 or the battery – the chicken or the egg?

Any bets?

72 de Larry W2LJ
QRP – When you care to send the very least!

After a couple of private e-mail inquiries, I’ve decided to address this here.

To be honest with you all, the fate of FOBB 2012 is unclear at best.

I sent an e-mail off to Rich Fisher KI6SN asking if he wanted me to manage it again this year.  So far, I have received no response.  Also the ARS Wiki and the pages containing last years’ results and those of prior years seem to have vanished.

Maybe Rich has decided to do something different with FOBB for 2012 – not sure what is going on.

If I hear anything, you all will be the first to know. 

72 de Larry W2LJ
QRP – When you care to send the very least!

I’m a huge fan of the platform.  Don’t get me wrong, a lot of the projects I think are just too simple and can be done on a PIC for a lot less cash.  That being said, there are some REALLY neat Arduino projects out there and I’ll be Highlighting more ham related projects here in the future.

Just in case you’re really not sure, here’s a snip from the Wikipedia entry on Arduino:

Arduino is a popular open-source single-board microcontroller, descendant of the open-source Wiring platform, designed to make the process of using electronics in multidisciplinary projects more accessible. The hardware consists of a simple open hardware design for the Arduino board with an Atmel AVR processor and on-board input/output support. The software consists of a standard programming language compiler and the boot loader that runs on the board.

Arduino hardware is programmed using a Wiring-based language (syntax and libraries), similar to C++ with some slight simplifications and modifications, and a Processing-based integrated development environment.

The whole entry can be read here: http://en.wikipedia.org/wiki/Arduino

The Geek Group is a hacker/makerspace in Michigan that does a lot of really neat things (and they have one hell of a machine shop as well!).  In this video, they give a good basic introduction to what Arduino is, what sets it apart from a PIC and how you can get started programming and tinkering with Arduino.

If you know of any great ham radio related Arduino projects, post them in the comments and share!  I may add them in a future post.

Here’s “The Geek Group” video:

according to today’s “Red & Rover” comic strip – the Sun affects more than just Hams!

72 de Larry W2LJ
QRP – When you care to send the very least!

Photo made when I arrived to send to my XYL.

I was just finishing diner today when my colleague phoned that the shop I work was on fire. I didn’t believe him at first but he was very seriously and told me could see the smoke from were he did drive. That was a distance of about 15 km. I jumped into the car and was astonished when I arrived. You see for yourself:

http://112groningen.nl/Groningen/nieuws/18259/zeer-grote-brand-in-uithuizen-video.html

Luckely no personal injuries, just material…

The first quarter of 2012 is in the books and so is a QSO for each and every day.   While the actual Q count is dropping from the total number of QSO’s I had in February and from January, I did manage to make a much bigger impact to my DXCC list.   The Q count is lower since I’ve been devoting most every weekend to working on the new basement ham shack.   This is important to me and will be especially rewarding when I move into the new space.   However, I’m not motivated by the total number of QSO’s I make, it is more about quality versus quantity. 

Another interesting point is the total number of DX stations I worked in March is also higher.  Of course, I did spend a few hours spinning the dial and working who could hear me during the March DX contest.  But perhaps this also means band conditions are gradually improving.  Just last night I worked E51M on 12m.  I saw a tweet from my good friend Martin, and spun the dial over to 12 to see if I could hear them.  E51M is working a DXpedition from Manihiki Atoll, North Cook Island.  It’s always a good feeling for me when I can log a DX contact, especially so when it is a new DX entity.  Of course, this goes in the books for April. 

I view putting Q1 behind me as a successful milestone.  However, before I schedule the parade, I know I’m just 25% into this challenge.  I need to begin thinking about how I’m going to handle vacation and other travel scenarios which will eventually come into play.  While my rules are somewhat relaxed, I did initially state that all QSO’s would be on HF.  I’m not sure if I’ve backed myself into a corner with this or not.   Time will tell…

The breakdown is as follows: 

Mode
Number QSO’s

JT65
48

SSB 
19

Additional notes of interest:

DX Stations Worked – 19

New DX Entities – 4

Total QSO’s for 2012 – 383

Total consecutive QSO days – 91

Days left in 2012 – 272

Until next time…

73 de KD0BIK