It has been a year since I installed my HiZ four square listening array. Tonight at 1:30 AM local (0630 UTC) I worked K9W on 160 meters. The signal was in and out on the inverted L transmit antenna due to high static from midwest lightning. On the HiZ the SNR was improved and no static to wear my ears out.
Tuesday, November 5, 2013
Friday, June 14, 2013
Building and experimenting is half the fun
I was recently able to communicate cross-polar to my antipode to a rare DXpedition, Cocos-Keeling. Background on it is here.
And I mean BARELY. The hex beam at 42 feet was marginal at best. Only after I swapped out the feedline for LMR 600 VERY LOW loss was I able to sneak in a 2-way communication.
I started doing some reading on improved wire antennas, and read the ARRL Wire Antenna Classics text.
One particularly interesting design is the collinear array. Basically, it's a combination of loaded dipoles in series, end to end, which provide improved gain. Here's the design for the Franklin array.
Lower height, no towers, cheap, and they work. I put one up for 17 meters at the low height of a quarter wave in the back trees. Super stealth. I am still making measurements, but it appears to pretty good. This morning for a station in Taiwan it was S4 on the Franklin, and S6-S7 on the hex.
And I mean BARELY. The hex beam at 42 feet was marginal at best. Only after I swapped out the feedline for LMR 600 VERY LOW loss was I able to sneak in a 2-way communication.
I started doing some reading on improved wire antennas, and read the ARRL Wire Antenna Classics text.
One particularly interesting design is the collinear array. Basically, it's a combination of loaded dipoles in series, end to end, which provide improved gain. Here's the design for the Franklin array.
Lower height, no towers, cheap, and they work. I put one up for 17 meters at the low height of a quarter wave in the back trees. Super stealth. I am still making measurements, but it appears to pretty good. This morning for a station in Taiwan it was S4 on the Franklin, and S6-S7 on the hex.
Saturday, October 27, 2012
The art of the "rag chew"
Conversation is an art, not a science. Amateur radio is a great hobby that brings together people of many diverse backgrounds and lets them enjoy fellowship and the fun of this great adventure.
"Rag chew" is the amateur's term for a casual conversation. It's much more than just a signal report exchange.
I used to "rag chew" all the time, before the DXing "bug" bit me. But sometimes I still find the chance to enjoy a chat with a fellow ham.
Case in point: I worked Peter, VK6APZ, Friday night October 26. He is located almost at my antipode in western Australia, which gives it some special propagation characteristics (more on that in a separate post). We confirmed that the propagation was via Long Path, as his signals were arriving from East instead of West (unusual for the signal to travel so far in darkness when there is a daylight path, and it was long after his sunrise so not a gray-line path.
What is really neat is not the propagation, but the 20 minute rag chew we had about dogs. Peter's best buddy is his blue-heeler mix named Champ. You already know from my earlier blogs about our three rescued golden retrievers. So we had another life passion/interest, our canine friends. It was great to chat with Peter, and I look forward to working him again soon.
Sometimes DX is more than just getting a new one in the log.
73 and Good DX!
"Rag chew" is the amateur's term for a casual conversation. It's much more than just a signal report exchange.
I used to "rag chew" all the time, before the DXing "bug" bit me. But sometimes I still find the chance to enjoy a chat with a fellow ham.
Case in point: I worked Peter, VK6APZ, Friday night October 26. He is located almost at my antipode in western Australia, which gives it some special propagation characteristics (more on that in a separate post). We confirmed that the propagation was via Long Path, as his signals were arriving from East instead of West (unusual for the signal to travel so far in darkness when there is a daylight path, and it was long after his sunrise so not a gray-line path.
What is really neat is not the propagation, but the 20 minute rag chew we had about dogs. Peter's best buddy is his blue-heeler mix named Champ. You already know from my earlier blogs about our three rescued golden retrievers. So we had another life passion/interest, our canine friends. It was great to chat with Peter, and I look forward to working him again soon.
Sometimes DX is more than just getting a new one in the log.
73 and Good DX!
Some DX thoughts: somebody posted on www.eham.net, asking what each person's best DX was. I thought about it, and had an interesting reply:
Tuesday, August 21, 2012
DX progress
Count is up to 303 as of August 20! My 48th birthday, and I am getting closer to honor roll every day! D64K, VU7M this past week. 13 so far this year.
More DX coming up: 3D2C, ZL9HR, VK0TH, PY0S.
Trying to balance life, work, hamming, and most importantly...the family.
73 and good DX!
More DX coming up: 3D2C, ZL9HR, VK0TH, PY0S.
Trying to balance life, work, hamming, and most importantly...the family.
73 and good DX!
Saturday, January 21, 2012
What is luck? With DX, luck is HUGE!
80 meter CW, not for the faint of heart or timid. HK0NA, day 1, 0300 UTC, darkness covers EU and NA, SA and AF. EVERYONE is calling HK0NA. The operator running the pileup is obviously skilled at keeping control, and the poor operators are few (thankfully). But the sheer SIZE of the pileup is immense. I don't remember anything quite like this on CW.
You can see in the picture that I am hearing HUNDREDS of stations calling HK0NA on my inverted L. I can pick out calls from US, SA, and EU...all VERY STRONG. The CW Skimmer is actually unable to decode most of the calls due to the overlap.
I got some AMAZING luck. I saw HK0NA work two stations +3 KHz. I saw a gap +2.85 kHz with noone calling, so I parked it there. After five attempts (about 3 min), he returned my call. LUCK! 250 watts to an inverted L. I need to make an offering to the DX gods, some sort of indication of my gratitude. Some coax in the field or something.
73 and good DX!
You can see in the picture that I am hearing HUNDREDS of stations calling HK0NA on my inverted L. I can pick out calls from US, SA, and EU...all VERY STRONG. The CW Skimmer is actually unable to decode most of the calls due to the overlap.
I got some AMAZING luck. I saw HK0NA work two stations +3 KHz. I saw a gap +2.85 kHz with noone calling, so I parked it there. After five attempts (about 3 min), he returned my call. LUCK! 250 watts to an inverted L. I need to make an offering to the DX gods, some sort of indication of my gratitude. Some coax in the field or something.
73 and good DX!
Off to a good start this year, DX-wise
12 Jan - 4W0VB, Timor-Liste (UA4WHX, Vlad Boyko)
21 Jan - HK0NA, Malpelo DXpedition
21 Jan - VK0TH, Macquerie Island (thanks to Trevor, VK8TH)
That's 293 worked. Checking the log, I had 14 new ones last year. If I can keep pace, I will break 300 this year. Fingers crossed. The Tokyo High Power amp sure helps, and the Flex Radio 3000 is outstanding.
I also learned how to optimize the SSB audio with the Flex 3000. Like other high end rigs (Yaesu FTDX5000), the operator can configure the TX equalizer for maximum "DX punch" without overload/splatter.
I first read about this in W9KNI's "A Year of DX" but since I am not on SSB that often, I never bothered with it. But I wanted to get a headset, and started asking questions on the Flex Radio owners forum.
The CM-500 from Yamaha is a moderately inexpensive headset with boom microphone. An op recommended it. I tried the Heil Proset Elite first, but the earphones rest ON the ears...not over them. Very uncomfortable for me. So I ordered the CM-500 and the adapter for the Flex, hooked it up, and listened to my audio on a separate receiver (no antenna connected). HOLY COW! What a difference the TX equalizer makes when I follow instructions for optimization. I was only getting half the "punch" before with default settings. And with the optimized levels, many stations have commented on the strength and quality of the audio.
I am really lucky to have a Flex radio. It's making SSB more interesting and fun than ever before!
73 and good DX
21 Jan - HK0NA, Malpelo DXpedition
21 Jan - VK0TH, Macquerie Island (thanks to Trevor, VK8TH)
That's 293 worked. Checking the log, I had 14 new ones last year. If I can keep pace, I will break 300 this year. Fingers crossed. The Tokyo High Power amp sure helps, and the Flex Radio 3000 is outstanding.
I also learned how to optimize the SSB audio with the Flex 3000. Like other high end rigs (Yaesu FTDX5000), the operator can configure the TX equalizer for maximum "DX punch" without overload/splatter.
I first read about this in W9KNI's "A Year of DX" but since I am not on SSB that often, I never bothered with it. But I wanted to get a headset, and started asking questions on the Flex Radio owners forum.
The CM-500 from Yamaha is a moderately inexpensive headset with boom microphone. An op recommended it. I tried the Heil Proset Elite first, but the earphones rest ON the ears...not over them. Very uncomfortable for me. So I ordered the CM-500 and the adapter for the Flex, hooked it up, and listened to my audio on a separate receiver (no antenna connected). HOLY COW! What a difference the TX equalizer makes when I follow instructions for optimization. I was only getting half the "punch" before with default settings. And with the optimized levels, many stations have commented on the strength and quality of the audio.
I am really lucky to have a Flex radio. It's making SSB more interesting and fun than ever before!
73 and good DX
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