tag:blogger.com,1999:blog-6680059195037502894Fri, 13 Sep 2024 11:07:36 +0000hamamateur radiotechnorati40mfeld hellfm245hellschreiberpsk31digitalexperimenthaarpkw2pmoonbouncenet40 meterscontestham radiomoon echopsk63radiotest160alaskaamateurantennaastronbalunbardeenbell labsbeveragebrattainbroadbandcoaxcoaxial cabledigital modesdxelectronicsfeedlineferritefrequenciesgakonaguatemalaicomimpedance transformerlogloop antennamarinemaritimemfjmobilemultibandnobelpower supplypropagationqslrio dulceschedulesshockleyskedssolar cycle 24sunsunspotstoroidtransceivertransistortunerwindingWelcome my blog for electronics and amateur radio.http://kw2p.blogspot.com/noreply@blogger.com (ShutterSparks / KW2P)Blogger20125tag:blogger.com,1999:blog-6680059195037502894.post-3301505245988684635Mon, 07 Jan 2019 04:44:00 +00002019-05-27T21:15:43.289-04:00 This post has been moved to the new blog, here: https://kw2p.shuttersparks.net/the-radiola-20-a-restoration/ http://kw2p.blogspot.com/2019/01/the-radiola-20-restoration.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-5168040340474060091Sat, 19 Mar 2016 05:24:00 +00002019-05-27T20:56:38.804-04:00balunbroadbandferriteimpedance transformertoroidwinding This post has been moved to the new blog, here: https://kw2p.shuttersparks.net/loop-feed-and-measurements/ http://kw2p.blogspot.com/2016/03/loop-feed-and-measurements.htmlnoreply@blogger.com (ShutterSparks / KW2P)5tag:blogger.com,1999:blog-6680059195037502894.post-8928981040883845134Mon, 07 Mar 2016 19:54:00 +00002019-05-27T21:17:07.578-04:0040 metersloop antennamultiband This post has been moved to the new blog, here: https://kw2p.shuttersparks.net/clarksburg-40-meter-loop-antenna/ http://kw2p.blogspot.com/2016/03/clarksburg-40-meter-loop-antenna.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-8911688074727235637Wed, 24 Feb 2016 20:49:00 +00002016-02-24T15:49:01.372-05:00After a long hiatus, I'm back on the air. QTH: Clarksburg, West Virginia, Harrison County, locator EM99tg. Primary mode is digital. Antenna is a 40 meter vertically oriented triangular loop, which gives good performance on 40, 20, 15, and 10 meters. The Rig I'm also working with my daughter, KC7BNH, in Coeur d'Alene, Idaho, to help get her back on the air as well.http://kw2p.blogspot.com/2016/02/on-air-finally.htmlnoreply@blogger.com (ShutterSparks / KW2P)1tag:blogger.com,1999:blog-6680059195037502894.post-6248006585849057587Mon, 17 Dec 2012 15:06:00 +00002012-12-17T10:06:43.291-05:00frequenciesmarinemaritimemobileschedulesskedsThe KW2P Ham and Maritime Mobile Net Frequencies list has moved to a new URL here: http://www.mayaparaiso.com/maritime_mobile_frequencies.php If you find any errors or have corrections, please let me know.  An easy comment form is here: http://www.mayaparaiso.com/contact.phphttp://kw2p.blogspot.com/2012/12/maritime-mobile-nets-frequencies.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-2507350484228451273Thu, 19 Aug 2010 01:03:00 +00002019-05-27T21:18:19.983-04:00160amateurantennabeveragecoaxcoaxial cabledxfeedlinehamkw2pradio.nobrtable br { display: none }td { font-family:"Arial",Arial,Sans-serif; } This post has been moved to the new blog, here: https://kw2p.shuttersparks.net/kw2p-beverage-antenna-designs/ http://kw2p.blogspot.com/2010/08/kw2p-beverage-antenna-designs.htmlnoreply@blogger.com (ShutterSparks / KW2P)2tag:blogger.com,1999:blog-6680059195037502894.post-4547236026649929726Thu, 30 Oct 2008 22:27:00 +00002010-08-15T23:48:56.360-04:0040mamateur radiodigitalfeld hellfm245hamhellschreibernettechnoratiAfter an interruption in ham radio activities and blog entries, I am back on the air, more or less. The interruption was due to several months of planning and executing a move to Guatemala and then getting settled here in my new digs and setting up a basic radio shack. At the moment I am only using a 26 foot vertical wire supported by a tree so my signal is not very good but I'm out there on http://kw2p.blogspot.com/2008/10/up-and-running-in-guatemala.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-7081990486093687559Fri, 10 Oct 2008 21:14:00 +00002010-08-15T23:47:35.007-04:00guatemalaham radiokw2prio dulceSorry for the longish absence. I am back on the air, operating from Rio Dulce, Izabal, Guatemala. I will be signing TG9/KW2P. New QSL information is posted on the QRZ database.Photos of the sail from Florida to Guatemala and lots of photos of the local area can be seen on my Flickr account at:http://www.flickr.com/photos/shuttersparks/http://kw2p.blogspot.com/2008/10/moved-to-rio-dulce-guatemala.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-3069332364006256877Fri, 02 May 2008 03:39:00 +00002010-08-15T23:46:28.924-04:00alaskaexperimentgakonahaarpham radiomoonbounceqslWell I got a QSL from the 40 meter moonbounce experiment back in January.(Click to see larger images)http://kw2p.blogspot.com/2008/05/haarp-qsl-card.htmlnoreply@blogger.com (ShutterSparks / KW2P)1tag:blogger.com,1999:blog-6680059195037502894.post-3069103459774794346Sun, 20 Jan 2008 20:12:00 +00002010-08-15T23:45:08.064-04:00amateur radioexperimenthaarphammoon echomoonbouncetechnoratitestOn the second night of the experiment, January 20, 2008, I copied signals at 6.7925 MHz from 0130 until 0139 EST, at which time the signals abruptly stopped and I subsequently received nothing. (nothing audible and nothing on the spectrum readout, which is much more sensitive.) I monitored continuously for another 15 minutes and then spot checked until 0230 EST. I moved to 7.4075 MHz and also http://kw2p.blogspot.com/2008/01/haarp-moon-echo-experiment-slight.htmlnoreply@blogger.com (ShutterSparks / KW2P)1tag:blogger.com,1999:blog-6680059195037502894.post-483284423925367039Sat, 19 Jan 2008 06:12:00 +00002010-08-15T23:44:13.440-04:00amateur radioexperimenthaarphammoon echomoonbouncetechnoratitestTonight, the HAARP transmitter in Alaska was used to direct exceedingly powerful radio pulses (around 4 Gigawatts effective radiated power) at the moon at a frequency of 6.7925 MHz and I could easily receive the echoes from the two second bursts here on earth with my amateur radio rig.Waterfall spectrogram of radio echoes from the moon.Click on the photo, then on "all sizes" for a larger image.http://kw2p.blogspot.com/2008/01/haarp-moon-echo-experiment.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-3103517442999852208Thu, 17 Jan 2008 05:07:00 +00002010-08-15T23:42:49.767-04:0040mamateur radiodigitalfeld hellfm245hamhellschreibernettechnoratiWell, 40 meters was being very ornery tonight at net time of 9 PM EST. Here in West Virginia I had no copy, no signal at all on net control or anyone else except I had about a 50 percent copy on WB2HTO. I saw the name Leslie go by, and I believe I saw a QH in AL. At 9:35 PM EST I checked in again and the band had greatly improved. I had net control, about 90 percent copy on WB2HTO but work http://kw2p.blogspot.com/2008/01/wednesday-night-40m-hellschreiber-net.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-1363761532716307508Sun, 13 Jan 2008 22:45:00 +00002010-08-15T23:41:57.930-04:00bardeenbell labsbrattainelectronicskw2pnobelshockleytechnoratitransistorIn honor of the 60th birthday of the transistor, here are some photos:The First TransistorReplica of the First TransistorDiagram of the First TransistorThe first transistor was developed in 1947 at Bell Labs by Shockley, Brattain, and Bardeen and it was made from germanium not silicon. Germanium was used through the 50's and into the 60's before being completely replaced by silicon transistors. http://kw2p.blogspot.com/2008/01/happy-60th-birthday-to-transistor.htmlnoreply@blogger.com (ShutterSparks / KW2P)1tag:blogger.com,1999:blog-6680059195037502894.post-7277437770896774421Sun, 13 Jan 2008 06:09:00 +00002010-08-15T23:41:04.330-04:00amateur radiocontesthamlogpsk31technoratiWell the PSK Fest was fun. I started out QRP but got no bites so switched up to low power (50 watts) and worked 117 uniques on 40 meters, spending almost all of my time between 7070 and 7073 kHz. I made a couple of friends along the way and we're going to set up skeds to try out more of the digital modes. I checked down at 7035 a few times but there was no workable DX from here in West http://kw2p.blogspot.com/2008/01/070-club-psk-fest-recap.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-8364557606483450752Fri, 11 Jan 2008 20:17:00 +00002010-08-15T23:32:11.801-04:00amateur radiocontesthampsk31technoratiThe PSK Fest starts tonight at 1900 EST. The contest is sponsored by the Penn-Ohio DX Society (PODXS) and runs from 0000z to 2359z January 12, 2008. I prefer PSK63 for contesting but this contest is PSK31 only.I plan to run QRP single band (40 meters). If conditions are terrible on 40m like they were last night I may switch up to the low-power class. I hope to see you out there.Contest info http://kw2p.blogspot.com/2008/01/070-club-psk-fest.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-6086988444123050941Thu, 10 Jan 2008 23:01:00 +00002010-08-15T23:23:44.723-04:00amateur radiodigital modesfeld hellfm245hamhellschreiberpsk31psk63technoratiModern sound card digital modes have introduced a layer of ambiguity when it comes to citing an operating frequency. Some operators quote a single frequency which means their dial frequency and assume an audio offset of 1 kHz. Some operators quote a single frequency that means their actual RF emission frequency. Others specifically quote their dial and offset, such as 7070+1500.It would be http://kw2p.blogspot.com/2008/01/dial-audio-offset.htmlnoreply@blogger.com (ShutterSparks / KW2P)1tag:blogger.com,1999:blog-6680059195037502894.post-6915270531175002826Thu, 10 Jan 2008 05:08:00 +00002010-08-15T23:22:33.522-04:0040mamateur radiodigitalfeld hellfm245hamhellschreibernettechnoratiWell that was fun. I checked into the Wednesday night 40m Hellschreiber Net, 7077 kHz +1000 Hz audio at 9:00 P.M. EST (0200z). Net control was Lou Wulfekuhler, W8LEW, in Lansing, Michigan. The net started out in Feld Hell but conditions were poor so we switched to FM245 and got much better results. There were checkins from Delaware, New Mexico, and Hawaii, although I could not copy the fellowhttp://kw2p.blogspot.com/2008/01/40m-hellschreiber-net.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-6826003073627259981Wed, 09 Jan 2008 06:56:00 +00002010-08-15T23:21:01.308-04:00amateur radioastronhamicommfjpower supplytechnoratitransceivertunerIcom IC-706, MFJ-949E, Astron RS-20Mhttp://kw2p.blogspot.com/2008/01/couple-photos-of-rig.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-4790094113440152237Mon, 07 Jan 2008 08:37:00 +00002010-08-15T22:36:17.500-04:00amateur radiohampropagationsolar cycle 24sunsunspotsYippee! The British Solar Observatory announced that the first sunspot of cycle 24 (the next sunspot cycle) appeared in the northern hemisphere on January 5th. It's a good time to be getting into ham radio!http://kw2p.blogspot.com/2008/01/first-sunspot-of-cycle-24.htmlnoreply@blogger.com (ShutterSparks / KW2P)0tag:blogger.com,1999:blog-6680059195037502894.post-2350257445889812852Fri, 04 Jan 2008 01:39:00 +00002010-08-15T22:34:12.101-04:0040 meters40mhampsk31psk63radioThis has happened three times now on three different nights and three different contacts. Here's how one instance went: I was calling CQ on 40m PSK31 and Fred, K5QBX was trying to reply. His signal looked sort of okay but just wasn't enough to read. It took two attempts before I even got his callsign. It was enough for a contact but not enough for a decent conversation. It was late and the http://kw2p.blogspot.com/2008/01/strange-psk63-effect.htmlnoreply@blogger.com (ShutterSparks / KW2P)3