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After a long, cold Sprinter (that’s what you get when Winter seems to last endlessly into Spring), Summer is finally here! Yay! And as promised, as of today, numbers are being assigned for the 2014 NJQRP Skeeter Hunt.

The Hunt will be held on Sunday August 10th this year – and right now, the best place to see the rules is at  http://w2lj.blogspot.com/p/njqrp-skeeter-hunt.html. I am trying to get the QSL.NET page updated with the new bonus points rules, but the server seems to be down right now.

Yes – bonus points this year for gathering enough letters from callsigns to spell out the word “SKEETER”. 100 extra points will be added to your score if you accomplish this feat. In any event, the NJQRP Skeeter Hunt is a grand time and folks seem to enjoy themselves a lot, so send me an email ([email protected]) and reserve your Skeeter number today.

Today was also the Raritan Valley Radio Club annual hamfest, which is held at Piscataway High School, in Piscataway, NJ.  The weather was absolutely beautiful – perfect for a hamfest!  It was sunny and it got up into the high 70s.  Very nice, but yet not exasperatingly hot. And as you can see from the two quick photos that I snapped with my phone, there was not a cloud in the sky. Unfortunately, it was perfect sunburn weather. Reporting time for the hamfest workers was 5:00 AM and as I was driving to the hamfest site, I had realized I had forgotten to bring sunscreen.  I discovered the hard way that there are NOT a lot of places open at 5:00 AM where you can buy sunscreen!

There were plenty of vendors and lots of buyers. The ARRL had a presence with the appearance of Bill Hudzik W2UDT, our section Vice Director. (Psst!  It helps that he’s a club member!) We also had a VE Exam session, where three people earned their Technician licenses, and we also had one upgrade to General and one upgrade to Extra.

In the top photo, you can see the huge mast sticking up from an old broadcast van that Brian N2MPM had acquired. Running up the mast was a PAR END-FEDZ antenna that Alan W2AEW using to make QRP contacts.  If you follow this blog, you know that I have mentioned Alan’s YouTube videos in the past. He does an excellent job producing videos on how to use test equipment and other neat technical tutorials. If you haven’t subscribed to his YouTube channel, then you are cheating yourself. After you read this go over and subscribe – it’s definitely worth it.

Here’s a video he took of today’s festivities:

Pulling off a hamfest like this is a huge undertaking. Thanks to the direction of our two Hamfest Committee Chairmen, Drew W2OU and Rich W2PQ and all the members of the RVRC, this comes off flawlessly – year after year.

In between my duties of assisting with the parking and placement of the vendors, and being the lead in administering the VE session, I did get a chance to look at the various wares on the tables.  I purchased some BNC to PL259 adapters and some large alligator clips that we will to connect to batteries that we will be using next weekend during Field Day. Not a big spender much to the discontent of the vendors, but much to the delight of my wife.  😉

I’ve been up way too long and am making way too many typos – even more than I usually make, so it’s off to the sack for W2LJ. (Thank God for spellcheck.)

72 de Larry W2LJ
QRP – When you care to send the very least!
Skeeter #12 for 2014

As you will recall, my antenna on 40m is very low and not that efficient: it is just a 10/20/40m Par end-fed with an average height above ground of 4-5m at most. Last night I was on 2W. I hate to think how low the ERP would have been on 40m!

Overnight 17 unique stations spotted me with best DX AE2EA (5654km). Even with a low and inefficient 40m antenna, WSPR still works well!

40m unique spots of my 2W WSPR last night

As a (now-retired) broadcast engineer, I grew to hate the LM-386.  It always seemed to me to be difficult to control and to be prone to oscillation.

My own solution was to switch to another chip for audio amps.  My own choice was the TDA2822.  It’s inexpensive and easily available from Mouser, Digikey and others.  It’s a dual amp, which is handy for stereo, but I use it in bridge mode even when I design mono amps.  My choice is the SOIC-8 package, which is large enough to be easy to use, but also saves pc board space over the DIP-8 that’s usually used on LM-386 chips.

My general tips are to carefully bypass the power supply for whatever chip you use.  I’ve often used 4.7 ohms or so in the supply line, and tried to bypass it close to the chip with an electrolytic, a .1 uF and a 20-100 pf chip capacitor.

But the MOST important tip for taming IC audio amps is to connect a small capacitor (I’ve usually used 33 pf chip caps) between the inverting and non-inverting inputs.  It tamed lots of otherwise-troublesome amps for me.

Just had an email with this at the end:

“Sent from the ISS …-.-“

I am assuming this came from the International Space Station (ISS).

If correct, this is a first for me.

I am always nervous about lightning strikes.

The excellent Southgate News today told the (true) story of a local CBer who had his vertical and CB rig destroyed by lightning. See http://www.huntspost.co.uk/news/latest-news/
huntingdon_cb_radio_user_almost_electrocuted_after_lightning_
bolt_strikes_aerial_1_3648368http://www.huntspost.co.uk/news/latest-news/
huntingdon_cb_radio_user_almost_electrocuted_after_lightning_
bolt_strikes_aerial_1_3648368

I usually disconnect antennas when there is lightning about but I am still nervous.  One of my friends (not a radio ham and with no big antennas in the air) who lived in a normal estate home had his home struck years ago and it took out lots of his household wiring. The chances of a direct hit are rare, but I am always bothered and never quite sure what the best advice is.

No Es here on 6m WSPR since I QSYed to 6m around 1500z. There has been some GDX again, G8JNJ/A (184km) was spotting me at -24dB S/N at 2128z.  Doppler was low suggesting tropo without aircraft reflections, or aircraft crossing the path at right angles (so little/no Doppler).

Again I am bitterly disappointed with the lack if USA/Canadian east coast stations on WSPR.  As of 2145z there were still ZERO stations active on WSPR from that area. Come on lads! Give we Europeans a chance of being spotted over there!

Unless there is some interest from the east coast USA/Canada on WSPR very soon it will be time to abandon 6m WSPR this season. I have been spotted all over Europe, in N.Africa and in Israel (3519km) with just 1W ERP in the last few months.  I was hoping for the USA or Canada on WSPR this season. If there are zero stations at the other side there is no point in continuing.

Steve, G1KQH has sent this link about a new Chinese multi-mode transceiver.  See http://www.brickolore.com/ . Prices start at 2800 Yuan apparently. It is called the Xiegu X108. There is a video and some pictures of the rig.

To my mind, this still looks like  a “back shed” radio, rather than a mature, well engineered and  thoroughly well tested radio. I may be wrong. I am still waiting to see when the Chinese launch a proper Yaesu or Icom competitor. These will come but I’ve not seen one yet. Maybe in the next 12 months?