Archive for April, 2013

End-Feed Antenna is Finished…

April 23, 2013

Finished the end-fed antenna for the RV today. I ended up taking off about four feet of the wire so the antenna is about 26 feet long. SWR using my K1 with auto tuner is as follows:

40 meters = 1.3 to 1
30 meters = 1.1 to 1
20 meters = 1.0 to 1
15 meters = 1.0 to 1

Sent CQ on 7031 KHz and N9OL in Evansville, IN (386 miles to the SW) answered and we had a short QRP QSO. I was running 4 watts and John was running 5 watts. Things were fine till three other stations crowded in and I lost John in the ensuing chaos. My end-fed is mounted as a sloper and should have favored the NW…but our trips RV’ing this summer will tell more on this.

The antenna is short enough to fit in the foot print of my fifth-wheel RV. I use my awning as the tie-point for the UNUN and coax. If I don’t have the awning up, I can always just use a stake or short pole to hook the UNUN and coax to.

This antenna was the brain-storm of the fine folks at http://www.earchi.org and is their end fed 6 – 40 meter multiband HF antenna. I followed their article and ended up with a great antenna for my RV. Anyone who is space limited as far as antennas are concerned, ought to check out this antenna. They also tell how to make a “No tuner needed” 20 and 40 meter end-fed antennas. The 6 thru 40 meter antenna does require a tuner.

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40 thru 10 Meter End-Fed Antenna for RV

April 18, 2013

Here is a pic of the 9:1UNUN I built last night for a 40 thru 10 meter end fed antenna I want to try out for our RV. Need to measure the antenna today (30 feet to start out and then tune) but we have bad storms going on till late tonight…so may have to wait till tomorrow to put up and try out.

Image

I hope to try this one out first then try the three different vertical antenna ideas I have.  More to come later.

Antenna’s and RV’ing

April 17, 2013

Mounted the two poles I use for antenna mounts on the back of the RV yesterday. I use those three foot “army green” poles and stack them together to make a mast about 25 to 30 feet high. I have three vertical antenna ideas to play with and also want to built a 9:1 unun for a sloper antenna idea that is said to work good on 40 thru 10 meters…and only 26 to 30 feet long. That size would be perfect for RV’ing and small camping sites since out Fifth-Wheel is also 30 feet long.

We plan on RV’ing in the UP of Michigan, OH, IND, NY and maybe PA if time permits. I like using my K1 when camping…but now will also have my CC1 for 40 meters and my KX1 which is good for 40 and 20 meters. I have the 30 meter band PCB kit but have yet to build it. I also have the auto tuner (KXAT1) kit but think about selling it as I doubt I would ever use is.

Will post antenna results here as they become available and not eating hot dogs at the campfire!

CC & KX1

April 11, 2013

Made a couple of contacts with the CC1 but have not yet attempted to measure and drill the front and back panels for the case.

The KX1 arrived today. A tad over 4 watts out on both 40 and 20 meters and the receive sounds fantastic! The KX1 may become my new QRP camping rig. I have the 30 meter option for the KX1…if I install it, it will be the same as my K1. Been raining here for several days now…if it ever stops, I can start playing with the antenna ideas I have for the RV.

Being retired is both busy and hard work…LOL!!!

Workbench Progress

April 10, 2013

OK, the KX1 is done…the firmware chip was bad but thanks to the KX1 guru Don, W3FPR, that along with a couple of solder reflows and he got the rig working. The guy really knows his stuff! The KX1 should be back here in a week or so and then I can try it out.

Completed the beta build on Etherkit’s new CC1 40 meter transceiver…nearly all smd and challenging for an old fart like me. But had fun, though I may hesitate from future smd projects unless they are size 1206…better yet, stick with thru-hole components…LOL. Made a couple of contacts this evening as is and it works rather well.  2.5 watts out and the receiver is really hot! I have yet to tackle the case which is included but not marked so I have to do some measuring and praying (!!!) to get it right.

We have uncovered our fifth wheel and I want to start playing with some antenna ideas to use this season while out and about…camping/fishing/QRP operation, it just don’t get any better than that!