AmateurRadio.com

This is to let everyone know that Wednesday night, Joe Walsh WB6ACU is going to be co-hosting TWiT.TV’s HAM Nation with Bob Heil, Gordon West and Leo Laporte. Will be a blockbuster show with several in- studio guests. Joe will be introducing a new Contest/Dx segment anchor that is joining the show. Watch live and fasten your seat belt!

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].

If you own a smartphone and/or tablet device and use any of the amateur radio related apps designed for these devices, I would like to hear from you.  I’m conducting research for an upcoming episode of the Practical Amateur Radio Podcast (PARP) and would like to know what apps you are using, how you use them and how they work for you. 

Please contact me via the email address listed on my QRZ page.  Thank you!

73,
Jerry (KDØBIK)

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].

Over the weekend I recorded and released episode 67 of the Practical Amateur Radio Podcast.  In episode 67 I discussed using D-STAR along with the DV Access Point and the Digital Ham Access Point (DHAP) from Hardened Power Systems.  All of course powered by the wonderful little Raspberry Pi. 

Thanks for listening…

73,
Jerry (KDØBIK)

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].

This is PART 4a (there is a part 4b below) of the project “Arduino Frequency Display For a Kenwood TS-520S HF Ham Radio”. This part covers switching to a new front end circuit as seen used by the DFD2 frequency counter from “Almost All Digital Electronics”. Their website is http://aade.com/DFD2inst/DFD2inst.htm

All parts: (PART 4), (PART 3), (PART 2), (PART 1)

(PART 4A)

This is PART 4b of the project “Arduino Frequency Display For a Kenwood TS-520S HF Ham Radio”. This part covers testing the circuit and frequency counter software when connected to the Kenwood radio but still on a bread board. The final display is not ready so in this video I simply push the frequence counts to the laptop.

(PART 4B)

Here is the datasheet for the PLL chip I used in (PART 4). Other datasheets can be found in (PART 1).

74HC4046 Phase-Locked Loop with VCO (PDF)

Todd Harrison, KF7NBI, is a regular contributor to AmateurRadio.com and writes from Arizona, USA.

A couple of weeks ago both I and my wife were very lucky to sit in on the recording of News Quiz for BBC Radio 4. Its been an ambition of mine for a number of years to visit Old Broadcasting House and to watch a live radio recording in the Radio Theatre.

My host for the evening arranged a tour of the New Broadcasting house news floor, the Radio 4 Studios and most impressively the BBC canteen !

I was amazed how small the Radio 4 studios actually were. Gone of the days where you would have an engineer, Producer and Broadcaster sat in the same room.  But still in one studio there was still a record player and a reel to reel tape machine. Just in case any of the archives were not digitally stored.

The BBC news floor was impressive, many of the TV presenters milling around and a constant hub of activity. For that many people in a single location I was amazed how quiet it actually was.

After a prawn sandwich (my wife had salad – with Chips) we moved onto the Radio Theatre and sat in the front row for the recording of News Quiz. Sandi Toksvig of course was amazing. She started with a great story, and moved onto the recording of the show making it look easy and seamless, the panelists were on top form (Jeremy Hardy, David Mitchell, Elis James and Mark Steel)– and of course Kathy Clugston was superb in reading the news clips. it’s a shame that so much of the evening was edited out, but you have to compress 2 hours into 30 minutes, But the best jokes stayed in.

After the show we nipped back to the green room, and because on this occasion the panelists were cycling for Sport relief they all were pretty knackered, out of breath and in Jeremy Hardy’s case – drinking a cold beer. To be honest I was shattered watching them cycle during the recording.

I must add a special thank you to Jim and Kathy for inviting us as their guests and organising the whole evening. My wife and myself really enjoyed the evening out in London – It was so surreal that it almost seemed normal.

Dan Trudgian, MØTGN, is a regular contributor to AmateurRadio.com and writes from Wiltshire, England. He's a radio nut, IT guru, general good guy and an all round good egg. Contact him him here.

John Smithson, Jr., N8ZYA, is a regular contributor to AmateurRadio.com and writes from West Virginia, USA. Contact him at [email protected].

Last Sunday Julie and I were on our way out the door and I wanted to check some directions before we left. I went off to the computer to look something up and as I turned the PC on a POPPING sound was heard…..then nothing! My six year old PC failed to start, absolutely nothing was happening. There was no time to look into it now we were heading out the door. Early that evening when at home I tried the power button on the PC again (maybe somehow the computer god's looked after things for me) it was the same….nothing. The tower has to come out from it's cubby in the roll top desk and opened for further investigation. I first made up a diagram of where all the USB cables, monitor cables, audio

Faulted part

cables and serial cables went so all could be placed back in the same place. I suspected the power supply was the problem and hoping I could find a reset button on the unit once the side panels were taken off the tower. I was not so lucky there  was no reset button but there sure was a noticeable burning smell and it was coming from the power supply. It was easy to remove the power supply from the PC but not without labelling what cables went where on the mother board. Doing similar things in the past I have said to my self "no need to write it down it's simple and straight forward" boy has that lie got me into some troubles in the past! With the power supply out and not yet opened I did notice the
power supply fan was missing some blades. Once the supply was opened up I quickly found the faulted

Cables everywhere

transistor. With the broken fan and faulted transistor it was time for a new power supply.
The old supply was a 500 watts supply the new one is 750 and can be used with a new PC when I decide to build one. The new supply fit perfectly into the tower and there sure were lots more cables on this supply! I ended up using only 5 of the some 20 cables so the rest were tucked away in an open bay for future use. With all the cables plugged into the mother board, hard drives and CD drive and the spare cables were as I said tucked away. Before putting the side panels back on it was time to plug in the new supply and power up the PC. I then pushed the power button and NOTHING!!!! Ok I said lets  try that again…..NOTHING!!!  First thing that came to mind was, did the faulted power supply take something else with it?? It was time to take a breath and think of my next step, time to recheck all the mother board connections.  After all I did take time to clean the dust off the board while the side panels were off

Ready to power up

maybe I loosened or disconnected something in my cleaning frenzy. All seemed good on the motherboard it was time to recheck the power supply again. It could be possible that even thought the supply is new it is defective? I checked that there was AC making it to the supply, that the proper connecters were used on the mother board and that I did not forget any connections. It was then I noticed on one connector did not seem to be seating right. This was a connector that had an "option" of adding 4 extra connections. It was a 20 pin connector but some mother boards were 24 pins as mine was a 24 pin. The connector had the 24 pin setup ready to go as it was snapped into place so I just plugged it into the board….very straight forward I thought……NOT…….there was also clear tape holding the extra 4 pin connector in place and this tape stopped the connector from seating firmly on the  main board and thus the PC not starting!  With the tape removed and 24 pin connector firmly seated the PC came to life! I am happy to say that all has been working well and the PC seems to run cooler and not as noisy ass the old power supply. I did notice some software hiccups once I was up and running.

The problem found

Some of the USB ports changed their ports on me. My K3 now wants to be com 3 and not com 4 anymore. This had me change around some radio software. Also when the PC booted  a bios page came up (never a good sign) asking me some questions about the type of start up I wanted??? This only happened once and all is good now but really not sure what that was all about I only replaced a power supply?? Oh and finally Oliver was in on the action too, he was fine with no PC and a new cubby.

If you look hard Oliver can be found

Mike Weir, VE9KK, is a regular contributor to AmateurRadio.com and writes from New Brunswick, Canada. Contact him at [email protected].