Showing posts with label ssb. Show all posts
Showing posts with label ssb. Show all posts

Wednesday, January 13, 2016

Easy 2 meter SSB Loop Antenna


Here is a great design and build instructions for a nice 2 meter SSB loop antenna. 2 Meter Halo Antenna by Mike Fedler N6TWW has the detailed instructions on his site. Here are some initial notes from the link...

Project Background & Goals  *CLICK HERE FOR FULL LINK*

Monday, October 7, 2013

Joe's QRP Station Build

This is the first member post of many I hope. Joe wrote this piece about a recent project. If you would like to post something here about your projects, experience or thoughts, let me know and we will see if we can post it up!

Joe's QRP Station Build
by Joe Porter WØMQY

I'm a big fan of portable qrp operations and enjoy the PSK31 mode.  There are always lots of cables and boxes to carry around with you, and I decided there must be a better way.  The following photos show my solution to keeping it all together.


I removed the printer stand from my computer lab because it was too large and took up too much desk space.   I can’t claim originality for the idea but after stumbling over the stand for several months, I assembled it into a portable QRP_PSK31 unit.  Under the stand on the left is the Icom 703®, in the center is the Signal One® PSK31 interface, and on the right is the external speaker.  Handles were placed on the top of the stand for ease of carrying.  The top of the stand makes a nice resting place for the laptop.  The two heavy steel legs make it a great support for the computer but raises the keyboard above the level I like to type.  This problem was solved by using a small collapsible table that has a height adjustment.  This table is set to about 24” high bringing the laptop to a comfortable typing position.

While this particular setup would not satisfy the biker, pedestrian, or back pack mobile enthusiast, it does simplify my setup and teardown time in the local park.  This package was used the past weekend with great success during the Brutus Bash in my camping trailer.   For a quick stint in the local park, it is a keeper.


This photo gives a better view close up of the operation position.  The stand seemed to slide around on slick surfaces so a couple of heavy chair grommets were added to the bottom of the legs to provide stability.


This photo shows the arrangement of the equipment underneath the stand.  The Icom 703® is on the left, the Signal One interface® with associated cabling in the center, and the Icom 703® external speaker is on the right. Directly behind the above equipment are two 7 amp hour SLA batteries.  One battery is used for operation while the other is on the charging system.


A 15 watt solar panel provides the charging power for the second battery while the radio is operated from the first battery.  The panel is probably marginal in keeping up with the radio but it does a nice job of charging the second battery in the pack.  So far, the batteries have outlasted me on my trips to the field.  That put my fears to rest on whether I had enough battery power for a weekend or a 4 hour sprint.

The Icom 703® would not be the radio of choice if I were going for a long haul because it draws 350 ma. on receive and the transmitter will pull about 1.5 amps on transmit.  Although these two batteries with the solar charging system make it completely portable it does have limitations with its size and weight.  For me, that is offset by the quick setup and tear down time.  Coupled with some South Bend® SD20 collapsible fishing poles and a dipole for each band, it makes the ideal portable companion for me.  The beautiful part of all this is that the Icom 703 gives me CW, PKS31, SSB, RTTY, and NDB chasing.   The complete portability of this system provides many an opportunity to go to the park, woods, Brutus Bashes, or any other event I might want to operate.  It also has the neat feature of being a quick setup in time of disaster for a small command station to assist in public service.

Last but not least, it was decided to keep things as simple as possible to minimize breakdowns, broken cables, and solder joints in the field.  As is shown in the photo, all of the equipment including the batteries are equipped with Anderson Power Pole® connectors.  This makes for easy switching batteries, removing equipment for other projects, and just plain versatility.


This project has given me pleasure both assembling and using it.  I love QRP radio and portability. This package gives me both.  If you haven’t tried portable operation, I suggest you give it a try.  It is great fun and you get to enjoy the great outdoors.

72/73’s   Joe  WØMQY







Sunday, March 31, 2013

Great Kickoff Meeting for SEKARC !!

The first meeting of the Southeast Kansas Amateur Radio Club was a success! Along with several hams from Pittsburg, we also had David KDØFBH from Iola and Larry NØMST from Joplin. David brought us information on the American Legion Amateur Radio Club which I will be posting about next week on this site. It was great information about another way to practice amateur radio. Larry brought a couple of his excellent SSB VHF antennas that he creates.

The coffee was great and we spent too much time talking to really eat much, but the manager came by and welcomed us, passed out coupons and mentioned the 65 cent coffee if you BYOC. I must have heard incorrectly on the 35 cents offer I originally posted but 65 is still a reasonable price! If we grow much larger we will have to expand out of the corner!

There were a total of 11 hams and 2 XYL's for a total of 13 people, not bad for the first meeting on a holiday weekend! We had 2 door prizes and the proud winners of the SEKARC custom coffee mugs, which went to Tom N2UHC and Bill WBØLXZ. We hope to have at least one door prize for every breakfast meeting so make plans to attend every month! Now Bill and Tom will be ready for the BYOC coffee special next month.
If you have ideas for prizes or would like to donate a prize just send us an email with your thoughts! Gag gifts and homebrews are fully acceptable as gifts for this group so let me know if you have ideas!

We discussed the formality of the group vs structured, due paying hassles and formal meeting agenda's. We opted for the casual, informal FREE version of the SEKARC and we will continue the current format at Hardee's and on the last Saturday of each month so make your plans each month. We will be having activities beyond the Saturday morning get together, such as Field Day, foxhunts, Special Event stations ( PSU Homecoming was one possibility for that one ).

The Builders group will continue on the 1st and 3rd Thursday evenings and if you would like more information please email us at sekarc.net@gmail.com and we will put you in contact with the host Joe, WØMQY. Tom N2UHC, one of the builders group brought in one of his projects, a QRP CW transceiver which you can see being held by Justin KDØCUR in the photo above. WBØLXZ also brought in a circuit board and schematics for a QRP 80 meter transmitter that he is considering as a group build project for those interested. It will transmit with a 3.6864MHz crystal, 4 transistors, and a couple dozen little tiny small other parts + one 23-turn toroidal coil that must be wound. The toroid is part of the pi-network used as a low-pass filter. When you next see it, it should all be on one circuit board less than 3 inches square. To use it as a transmitter, you need a 12v source, a key, and a fair 80m antenna.

Larry NØMST, one of the local VHF big dogs, brought in his fantastic bigwheel cloverleaf VHF horizontal SSB antennas, and a smaller square version for mobile applications.
I have one of those on my shopping list this spring and I hope to be able to expand my SSB VHF reach with one of those beauties! Both of these antennas were built to last and work well. I've learned a few things from Larry even before today and one is them is, the higher the frequency the more important GOOD coax is. In fact he recommends nothing less than LMR 400 for VHF/UHF setups. And last I heard, he had made contacts in something like 46 of the lower 48 states on SSB VHF so he is doing something right and of course he will tell you that height is a huge factor in your ability for long distance VHF work of any mode.

Well our first meeting was a huge success and I hope you all remember to keep us on your calendar for the last Saturday of every month but we will be having other activities in between those days so keep tuned in to the website here for new events and information. Thank you to all that were there today, I think I can speak for all of us when I say it was a great time to meet people and develop some friendships and fellowship that goes well beyond the radio waves. Joe WØMQY placed a request for one of the custom shirts like I was wearing from the CafePress/SEKARC shop. Here is a link to the shop and if you would like a custom item created please shoot us an email and I will mock something up for you.
I have a few generic club items posted and I can add any name or call to just about anything. I do not apply a markup so there is no profit for me in this, just want to spread the word on SEKARC and the art of radio!

Also in attendance were my XYL Loren KDØRTX, who is excited about learning and using CW and building kits, Steve WDØDTS and Wayne ACØOG, it's very helpful to have so many experts in electrical in the group. Wayne is an active member in the Builders Group and Steve is an experienced ham, just kind of cranking things up again. We missed some of the regulars on the Wed night nets, but some were traveling for the Easter holiday and the rain may have kept others in. We hope for a bigger and even better turn out next month. And remember, after the April meeting we are going to move to the park and setup some field work and make some contacts, some QRP and some not so QRP!!

 73's and BTU, this is Kilo Delta Zero Sierra Echo Golf.



 

Wednesday, February 27, 2013

First SEKARC Net A Success !!

Our first weekly net was a success! We had a total of 7 check ins. Locations varied from Pittsburg, Columbus to St. Paul and even Seneca, MO! Thanks to everyone that participated. We will look for you all again and MORE next week.

We discussed possible meeting days and several items were mentioned that will make excellent topics for the club meetings. Things like SSB on VHF/UHF, SDR ( software defined radio ), foxhunts and kit building.


SEK ARC Weekly Net Log

CALL SIGN NAME LOCATION
KD0SEG Jeff Pittsburg KS
KD0RTX Loren Pittsburg KS
W0MQY Joe Pittsburg KS
KD0SSD Leon Pittsburg KS
N0IGZ Frank Columbus KS
KD0FRL Casey Seneca MO
N2UHC Tom St. Paul KS

One of the topics was the Hamfest in Claremore OK in march....  you can find more info at this link. And see the previous posts for additional information !