Here We Are, Again

Here’s my first blog post in a good long while. I figured it was time to get things going again and this post will be about some current projects here at VE3MPG.

A station photo is in order now that the shack is clean and tidy (somewhat). This varies day to day, hour to hour.


I’m located in part of the basement called the “bunker” – 2 windows, one facing due south the other to the east so I get some nice sunlight most days even during the winter months. Power to the station is supplied by a dedicated 120V line and a second, share 120V line. Both have APC uninterruptible power supplies to condition and smooth the AC coming into the shack. In the event of low voltage or complete loss of power the APC units shut down the computers gracefully and a small utility lets me monitor line voltage and power interruptions. The APC units prevent power surges from reaching my equipment, but a good ground is necessary.

The next posting will be about Part II of the St. Louis Vertical article from April 2010. Hope to be completed with testing and construction in time for the annual Chilicon qrp outing at the Rideau River Campground on September 14th and 15th sponsored by the Ottawa Valley QRP Society.

That's it for now.

Great Weekend With DX

Weather in the Ottawa area was superb this weekend. BBQs and relaxing outside were the order of the day. Temperatures moderated to the mid-20s (Celsius) on Sunday. This necessitated some outdoor relaxation and a good book.

After dinner I started listening around 17 meters. There were a few signals but not a lot of DX. A few minutes later I saw the S-meter on the FT-950 hitting S9. A digital station was very loud; and there was a pile-up starting on frequency. It was 2330Z and usually at that time of day the band is closed. With little solar activity I was surprised by the strong signals on 17 meters.

The station was Ramon PZ5RA in Suriname. I had worked Ramon in 2004 and again in 2007 on digital modes, using my FT-100 in those days. I finally worked Ramon after 30 minutes using BPSK125 – makes a QSO whip along quickly. I kicked in about 12dB of attenuation because he was so strong on my Cushcraft R6000. About 10 minutes after the QSO the band dropped out – silence – not a signal. I suspect Ramon will be hanging around 17 meters since the band was in good shape for north/south propagation. Maybe we’ll get a repeat tonight and more stations will be able to work Ramon in Suriname.

FT-817 Gets Updated After 9 Years

My trusty little FT-817 is getting a CW filter. I’ve had the 817 for 9 years now and it has never let me down. I have the original 817 not the 817ND version. I’m preparing for Field Day with the Ottawa Valley QRP Society and I’m trying to improve my CW proficiency in time for Field Day 2010, scheduled for June 26th and 27th – the last weekend in June. Even if I don’t reach my goal I’ll use the 817 on PSK. The 500Hz filter should help in that situation too. I also have a new PAR EF-10/20/40 End Fedz QRP antenna on the way. Dale, of PAR Electronics has informed me that between May 21st to the 27th is when he’s taking amateur orders for his End Fedz antennas. He’s extremely busy with his commercial and mil orders when he’s not fulfilling amateur orders.

I want to add that I have had 2 PAR End Fedz (EF-40 and a EF-30) installed as permanent antennas for 2.5 years; they still operate and look like new. Don’t hesitate to use Dale’s antennas in permanent locations. If they can survive Ottawa’s extreme weather conditions they can survive just about anywhere. Highly recommended for either portable or permanent locations. I keep a spare EF-20 in my go kit just in case.

Field Day equipment will include my FT-817, an FT-100 as a spare transceiver, a 15W solar panel and charge controller for my 12V 18A/H gel cell, the PAR antenna and a Buddistick as a spare antenna. I’ll be taking along my Honda EU2000i gen set to run my laptop throughout the operating period.

The bands have been lousy lately and the sun is quiet, no sunspots. Despite the conditions there’s DX on everyday. 17 meters is open as a write this at 20:30Z. Ukraine, Russian and Italian stations are on the PSK section of the band with Americans having QSOs in the phone portion of the band.

VE3MPG Blog posts that mention the PAR antennas

FT-950 Back On The Air

It's been a few months since I've fired up the FT-950. Got it dusted off and moved back to the shack. The last time it was used was at the MARG Field Day at the Long Island Marina in Kars. It's hard to forget how great the receiver is in the 950.

Late this afternoon I worked TK5IH in Corsica and ZP8AE in Paraguay, on PSK, with 589 and 599 reports using 20 watts to the Cushcraft R6000. Earlier in the day using the 'old' FT-100, I worked Maria, SA2YLM on 20 meters. 17 meters opened just after lunch for a short time and managed to snag a few Europeans with great 5NN reports.

The nice 'width' feature of the FT-950 allows me to narrow down the passband and get rid of high powered stations close to the DX that I want to work. The HRD* waterfall below shows the passband with many signals.



The HRD* waterfall below shows no signals, on either side of the received psk track. This eliminates desensing of the receiver by narrowing the passband so strong signals on either side of the track being decoded dissapear. The FT-950 can also notch out a signal on either side of the decoded signal.



I use Ham Radio Deluxe as control software and Digital Master 780 for digital modes. I find it is one of the most intuitive ham software suites. It keeps track of my logs and can be used for just about any digital mode now current on the amateur bands. There's an excellent satellite tracking module included. Simon Brown, HB9DRV, is continually adding features and tweaking the software. The Ham Radio Deluxe forums are a repository of information pertaining to any subject about digital modes and how to connect Yaesu, Icom, Kenwood, and just about any transceiver to sound card interfaces and to your shack computer. HRD works with Windows XP and Windows Vista.

Some PSK tips:

In PSK modes use UPPER CASE characters sparingly. Lower case text in PSK31 varicode transmits fewer bits of data. You'll increase transmit speed and improve the likelihood of proper decoding on the other end by using lower case text as much as possible. (For example, the difference between a lowercase “e” (11) and an uppercase “E” (1110111) is three times more bits.)

*Ham Radio Deluxe

The R6000 Rocks!

Finally got the antenna connected late this afternoon and got on 20 meters, PSK. Worked Florida and Cuba with about 15 watts to the antenna. 599+ reports so I could lower the power a bit more. I’m a bit hesitant to do this as I’m feeding it will el cheapo RG58 coax; about 110 feet of it so the attenuation is about 3.5db. Have to get some connectors on the good RG213 stuff that I have still coiled, new, in the basement.  

Conditions seem to be very good as most signals are way over S9. There’s been some very recent sunspot activity. My favourite site for checking solar activity belongs to Kevin, VE3EN, down in Cornwall Ontario. There’s been a good bit of traffic in the forums these last few days. Check it out.

SOLARCYCLE24.COM

Technorati Tags: R6000,sunspots,PSK31

PAR 30M End Fed Dipole - First DX

 

These little gems, the PAR EndFedz, continue to amaze me. With 25 watts out on 30 meters, an FT-100 and Ham Radio Deluxe software I was able to work, GI4SIZ in Ireland 599, 9A0COAST on the island of Brac off the Dalmatian coast of Croatia with a 599, EA8KV, 599, in the Canary Islands and EB5DZC on the east coast of Spain 599. They were all perfect copy though with some qsb late this afternoon (20:00Z). The old FT-100 has a great receiver so I keep the RF gain cranked slightly to reduce band noise. I'm located about 20Kms south of Ottawa on a quiet country road so signals really pop out of the noise floor. Most evenings at this time of year the noise sits at S0. Even at this solar minimum some really good DX can be worked with efficient antennas. These little antennas work extremely well - highly recommended for portable or permanent installations.

Setting your radio for weak signal work

At VE3MPG digital modes are the preferred operating mode. I use low power and stealth type antennas and have been using PSK modes since I acquired my FT-100 in 2000. I ran across a really great article written by Larry, W7IUV, where he explains how to set up a FT2000 (or the FT-950 or any rig for that matter) for weak signal work and I'll quote some of his superb information below:

One of the biggest problems I see is that most people either don't know how to set up a radio for weak signal or they do and refuse to do it due to some personal agenda. Here's the way to hear weak signals either SSB, or CW;

Listen to the background noise. Does it move the S-meter at all? If yes you have the radio set up wrong. Yaesu provided a switch to select preamps or not and another switch to select input attenuation. USE THEM! On the low bands (160-30 meters) I will almost never operate with one of the preamps on. IPO ON all the time. Look at the S-meter. If it wiggles at all with background noise, add attenuation until it stops wiggling. On all modern radios there is about a 20-30dB difference between MDS and where the AGC starts working. You want the background noise (QRN, power line, QRM, whatever) to be at a level just below the point where the AGC starts working. That's also the point where the S-meter starts wiggling! At this level, when you tune across a weak signal it will jump up out of the noise at you. Note that setting the radio this way will NOT impair your ability to hear the weakest signal possible with current band conditions. The S-meter does not tell you S/N, stop trying to make it read upscale all the time!

Use the narrowest filter possible. Wide for me is 300 Hz. That's what I use for trolling the band. When things get tuff, I switch down as far as possible. Learn to use the narrow filters, they work far far better than screwing around with the shift and notch and other do-dads.

Do not use the RF gain control. If you have a SX-100 or a HQ-180 or maybe a R-390A it's a good thing. With modern radios like the FT-2000, using the IPO and ATT is far more effective. Also, depending on how and where the AGC voltage is applied to the RF and IF stages, using the RF gain control could possibly reduce your IMD performance and reduce you ability to hear weak signals due to increasing the noise figure faster than reducing the gain.

I've tried Larry's methods and on my 'old' FT100 it works great. On the FT-950 it works even better. I can copy weak psk signals better and it gets rid of much of the background noise. The signal traces on digital modes become very distinct using this method.

More info on Larry:

Larry - W7IUV
http://w7iuv.com/