AmateurRadio.com

Welcome to the new home of The K3NG Report.  I’m still getting things in order, most noticeably the blogroll.  I’m going to try to get all the blogs from the Blogger blogroll that are not covered at AmateurRadio.com in as RSS feeds.  Unfortunately WordPress doesn’t seem to have a good blogroll widget like Blogger, but it’s a small price to pay.

In an earlier post, I described my K9AY loop system.  QRX for an update on the outdoor portion.  But, after returning from a short and much-needed vacation at the beach yesterday afternoon, I whipped-up this little guy:

One of the big problems I have living in the city is overload from broadcast stations in the AM band.  (This is especially true in the heavily-populated, full-of-hot-air DC area—Ed.)  But, I digress.  I also wanted to protect the preamp and receiver when I was transmitting on the higher bands into nearby antennas.  So, some sort of filtering was in order.

I contemplated a number of topologies.  But, the W3LPL filters were a good choice because they’re cheap and very good.  A good reference on what I did is the NCJ article by K3NA and W2VJN about the VP6DX receiving antenna system.  The Ducie Island system is considerably more complex than mine.  But, they had more stringent requirements, more land for Beverages, and more money than I do.

Following the K3NA/W2VJN/W3LPL topology, I constructed a little diplexer filter for 160 and 80 meters that splits my K9AY to two receiver ports.  This splitter is the first thing after the K9AY coax passes through the station ground bulkhead, requiring a preamp on each port.  Since I don’t have a TX antenna for 160 yet, that port will go to the SoftRock-160.

I’ve only tested the 80-meter portion (since I didn’t get the 160 portion done until this morning before work).  But, it works like a champ and there is no overload from broadcast stations.  Although there are some curious mixes coming from some of the big AM stations in the area that seem to be external to the receiver (this has been confirmed by N3OX—pretty amazing stuff); but, that might deserve its own post at a later date.

Yep, it is confirmed now for sure. Compulsive Antenna Disorder has haunted me since I was first licensed and ran a coax fed 80 meter dipole on multiple bands without a tuner.  The first time the symptoms were noticed by my family and friends was when I got a couple OO tickets for out of band harmonics. Hmmmm… what’s up with that? So a bit of reading and the antenna tweaking began and that’s when it all started.

Soon thereafter I tried to load up a nifty pin from my Junior Prom Boutonnière that reminded me of a triple stacked halo for 1296 Mc (MHz for the newer ones amongst us).  Then it was the handheld yagis for 432 Mc that we used with some military surplus gear that used dynamos so we could chase tornadoes. (We thought if it bounced off the moon, it should bounce off of a tornado!) The saucer sled that became a parabolic for listening to satellite telemetry and on it goes… Compulsive Antenna Disorder has had a firm grip on me for some time now.

Am I dreaming? Thanks wiki images!

As a QRP operator, I am always looking for more antenna power. I know that somewhere out there simply MUST be a silver bullet, that magic QRM and pileup busting antenna that makes my 2 watts output sound like a full gallon.

I can say one thing for sure, I know a lot of non-silver bullet antennas, as I have a box full of them.

But they still make a few QSO’s at times and I’m having fun along with a bit of frustration and disappointment as I deal with my CAD affliction.

I’m told that much like telegraph key collectivitis there is no known cure or relief. I share in your grief brothers and sisters…

72,

Kelly K4UPG PB #173

Over the last few days a North American ham has been operating a beacon at the top end of the 30m band on the frequency that has been used for many years for HF APRS. At times this has made HF APRS operation impossible. After some difficulty, due to the fact that the beacon operator’s contact information was incorrect, someone managed to get in touch with him to point out the problems he was causing and ask politely if he would move the beacon. This is part of the reply that was received, copied verbatim from an APRS mailing list:

“Last week I  moved the beacon when  some other hams we’re bitching at me  about ‘their’  all important!!!   ham activity……   PSK,  RTTY   what ever!!! . 

I move AGAIN then another cry baby bunch CRIES about ‘THEIR’  ALL IMPORTANT    activities  like weak signal CW QRRS CW  whatever!

We have to SHARE the frequencies   I will think about the  QSY  …..  if I get Bitching from so other ham ‘group’ like the DX cluster folks who are  ‘DXing’  fish in a BARREL for some  ALL IMPORTANT  ‘certificate’     What am I to do???  I am an experimenter /builder  when do I get to use a frequency????????

WHY is ‘APRS’  more important than MY activity?  I look in the regs and I  see NOTHING about one  ham activity has  priority over another!”

I have left out the individual’s details as I don’t want to start a personal attack that could be counterproductive by leading him to entrench his position. But whatever happened to good manners, politeness and consideration for one’s fellow amateur? When, as a young teenager, I first began listening on the amateur bands, I used to be impressed by the politeness and courtesy of the conversations I heard. No longer is amateur radio a gentleman’s hobby.

This OM is quite correct that we have to share the frequencies. It is a common courtesy that if a frequency is in use then you don’t use it, even if you have a net that has been meeting on that frequency every day since Marconi invented the spark transmitter.

But in the digital parts of the bands which can be used for more than conversations between two or more people, checking whether a frequency is in use may involve more than just sending “QRL?” or listening for a couple of minutes. Activities like APRS, packet radio, Winlink and so on are effectively nets that operate 24/7. If you don’t hear anything for a while that may just be because propagation isn’t sending anything your way at the moment.

This is how Chris, G4HYG prepared to select the frequency to use for APRS over PSK. He recently wrote: “Before I released the HF version of APRS Messenger I spent some time checking  various frequencies on the 30m band. I found that the section from the 300 bd APRS frequency to the band edge appeared to be clear. I then started a period of monitoring the band from 10.1494 to 10.150 on a receiver with a digital mode program running with a very slow waterfall to catch anything I heard. This ran for a month from mid January to mid February.” It’s a pity the developer of the ROS digital mode that has caused so much disruption to other established activities could not have been as thorough and considerate in selecting operational frequencies.

To those who will trot out the response that activities like APRS have no more right to use a particular frequency than anything else I would say first of all that some types of activity need a specific frequency where other users can find it. It isn’t a matter of one activity being more important than another. If you had to hunt to find what frequency everyone is using today, some types of worldwide net operation would not be possible. In any case, a frequency that was clear in, say, North America might well be occupied in Europe. Allowing legitimate activities sole use of an established frequency by gentleman’s agreement is the only option. There is still plenty of room for other activities including ad-hoc beacons.

In activities like APRS, many dozens of stations all use the same frequency, making this a very efficient use of bandwidth. If users are driven off these frequencies or prevented from using these modes the result would be even less space left for other activities.

What people who object to this argument really mean is “I don’t have any interest in that mode and I don’t give a fig about those who do.” Is ham radio a fraternity? Yes, we are like a family of brothers who are forever breaking each other’s toys and beating the shit out of one another.

Series Three Episode Twenty-Two of the ICQ Amateur / Ham Radio Podcast. News Stories include:

• Dundalk ARS morse and 4m nets 
• £10m SSTL Space Lab in Guildford 
• New Nevada radio station includes ham radio 
• K3LR to receive Barry Goldwater Amateur Radio Award 
• Comms support for Chilean mine rescue
• Radio listener arrested 
• Ham sentenced for jamming police
• AMSAT-UK FUNcube SDR USB Dongle
• Experimental Web Radio from New Zealand and Europe 
• New slow Morse transmission near Dartford 
• BT to replace Comtrend PLT units 
• Happy Birthday Ippy 
• Amateur bands to be used for London 2012 Games

Your feedback and Martin (M1MRB) reports on the RSGB Convention and JOTA.

Series Three Episode Twenty-Two of the ICQ Amateur / Ham Radio Podcast. News Stories include:

• Dundalk ARS morse and 4m nets 
• £10m SSTL Space Lab in Guildford 
• New Nevada radio station includes ham radio 
• K3LR to receive Barry Goldwater Amateur Radio Award 
• Comms support for Chilean mine rescue
• Radio listener arrested 
• Ham sentenced for jamming police
• AMSAT-UK FUNcube SDR USB Dongle
• Experimental Web Radio from New Zealand and Europe 
• New slow Morse transmission near Dartford 
• BT to replace Comtrend PLT units 
• Happy Birthday Ippy 
• Amateur bands to be used for London 2012 Games

Your feedback and Martin (M1MRB) reports on the RSGB Convention and JOTA.

Here are two more recent reception reports of my QRSS signal.

N8YE capture of QRSS signal from VA3STL

Steve, N8YE, sent one from South Eastern Ohio (above) from 20th Oct 2010 and my signal looks nice and strong. Also, I saw the  my signal this evening in KL7UK/5 Bartlesville OK grabber (see below).

From KL7UK grabber 23rd Oct. at 0215