Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at http://www.hamweekly.com.

Resurrecting a Heathkit HP-13

Unrestored HP-13 with broken solder joints and trashed capacitors

HP-13 Schematic

The orange cap on the left under the Q1 (C1) was tough to replace with a much smaller radial lead capacitor

The article suggested replacing the original 100 uF/50 V capacitor with a 4,700 uF/35V to better control ripple.  The article goes into quite a bit of detail concerning his testing of ripple using an oscilloscope.  Finding room for that big cap and it's accompanying filter disc required a bit of creativity as seen below, where it's laying on its side between two of the rectifier caps.

Ready for testing

Testing

The Noise

Conclusions

Richard Carpenter, AA4OO, is a regular contributor to AmateurRadio.com and writes from North Carolina, USA. Contact him at [email protected].

Hello everybody! In this episode of the Everything Ham Radio Podcast, I am stuck by myself talk to yall. I unfortunately didn’t remember that I my next scheduled update was due until 4pm the day before. So I worked all afternoon, while at work, trying to figure out what I was going to talk about. When I got off work at midnight, I ran home and did my couple honey-dos and then went straight to recording the episode.

So what is in this episode?

First off, I made a mistake! Yea, I know, nobody is suppose to make mistakes right? Well, in my last episode I did. In last episode, my semi regular co-host Ian KM4IK and were talking about the big stink that was doing on with some things that the ARRL Board of Directors were going to be voting on. Neither one of us were really up to speed on the whole thing as much as we should be, but we did our best, and we even said that we weren’t. However, after the episode I did receive multiple emails saying that I said something wrong, so I corrected it in this episode.

With that out of the way, I went on to talk about an upcoming event called the School Club Roundup. It is this month only a few days away actually. The event run February 12-16, 2018. It is an event that is geared for school amateur radio clubs to get on the air and make some contacts. Even if you are not in a school club though you can still get on the air and make contact with the school clubs that are on the air and help them make the points.

After that, I moved on to Hamvention. Another correction from last episode. Well I say correction, this time it wasn’t me though. In last episode we talked about how a new building was going to be built and available by this Hamvention. However, this week, the Hamvention committee released that it wouldn’t be started on until later in the year due to a material shortage.

I wrap up the episode reading some emails that I have received over the past few weeks. The last episode of 2017, I told yall what my plans were for 2018 and asked what some of yalls were and also asked some questions about what were yalls opinions on how my show is. I got a few responses, wish I would’ve had more though.

Until Next Time Yall…

73 de Curtis, K5CLM

Curtis Mohr, K5CLM, is the author/owner of Everything Ham Radio Blog and Youtube channel. Contact him at [email protected].

Stories you’ll find in our February, 2018 issue:

The Powerful Voice of Radio Miami International
By Richard Fisher KI6SN

The Miami-based shortwave radio station known as WRMI began as a one-transmitter, one-antenna operation focusing mostly on Latin America. Then, late in 2013, an extraordinary opportunity came to WRMI’s door. Former shortwave broadcasting giant, Family Radio WYFR, was selling its massive antenna farm covering one square mile of ranch land near Kissimmee, Florida. The move turned WRMI overnight into a worldwide voice with 14 transmitters and 23 antennas.

TSM Reviews: DMR and the Radioddity GD-77
By Cory GB Sickles WA3UVV

Digital Mobile Radio (DMR) first came on the scene in the mid-2000s. But, price was always a barrier that stopped many from getting in on this amateur radio revolution. Recently, though, newer players moved into the market and prices began to fall. When Cory first heard about the Radioddity GD-77 he had low expectations. However, last fall they were running a Halloween special, with a 15 percent discount if you bought two, and that was enough to send him to his wallet. Now, he’s happy he did. Find out why Cory believes “Radioddity has a winning radio on the market.”

TSM Reviews: Exploring the Video and Radio Possibilities of Roku
By Mike Kohl

Over-the-Top (OTT) is the term the broadcast industry gives to “cord-cutting,” the wave of former cable and satellite-TV subscribers who are opting to bypass the fee structure of pay-TV in the US. OTT usually requires the use of a fairly robust Internet connection and at least one of many popular streaming devices. None are more popular that the long running and relatively inexpensive Roku devices. Mike takes a look at the possibilities for streaming not just video channels but radio as well for those seeking to maximize their cord-cutting experience in this first of a two-part series.

TSM Reviews: QRPWorks SideKar Plus
By Mark Haverstock K8MSH

Being a recent convert to QRP operation, Mark has been looking at radios and accessories that he can put into a small go-kit for portable operations and something easily taken on trips. Whether it’s hiking to a location off the grid or packing luggage for a flight—lightweight and portable are at the top of the list. Like many hams, with propagation conditions declining, Mark finds himself devoting more time operating in digital modes and relearning CW. Mark found that, mong its many talents, the QRPWorks SideKar Plus sends CW, RTTY or PSK using the keyboard or paddle; has a built‑in logger for 1,000 QSOs and weighs just 9 ounces.

NASWA’s 31st annual Winter SWL Fest and WWLG Update
By John Figliozzi

The 31st annual North American Shortwave Association (NASWA) Winter SWL Fest will be held next month in Plymouth Meeting, Pennsylvania. John Figliozzi, author of The Worldwide Listening Guide, previews the wide range of topics that will be featured this year. Among the programs will be an exclusive screening of “Spectres of Shortwave,” a film by Amanda Dawn Christie centered around the former RCI shortwave transmitter facility at Sackville, New Brunskwick. John also updates his shortwave guide.

Scanning America
By Dan Veeneman
Digital Overtakes Analog

Federal Wavelengths
By Chris Parris
Using Lessons Learned

Milcom
By Larry Van Horn N5FPW
Intro to Military Monitoring: A Look at the New 225-400 MHz UHF Milcom Band

Utility Planet
By Hugh Stegman NV6H
The Great NAVTEX War of 2018

Shortwave Utility Logs
Compiled by Hugh Stegman and Mike Chace-Ortiz

VHF and Above
By Joe Lynch N6CL
2017: A Momentous Year for ARISS

Digitally Speaking
By Cory Sickles WA3UVV
Mid-Winter Potpourri

Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Did Joe Taylor K1JT, Destroy Amateur Radio?

Radio 101
By Ken Reitz KS4ZR
Narrowcasting: FTA Satellite-TV and Lesser Known TV Channels

Radio Propagation
By Tomas Hood NW7US
Solar Wind and Funnel Clouds

World of Shortwave Listening
By Andrew Yoder
AM and FM Pirates in the Western Hemisphere

The Shortwave Listener
By Fred Waterer
Korean Winter Olympics; Latin and other Languages on Shortwave

Amateur Radio Astronomy
By Stan Nelson KB5VL
Learning about Radio Astronomy

The Longwave Zone
By Kevin O’Hern Carey WB2QMY
Loggings Galore!

Adventures in Radio Restorations
By Rich Post KB8TAD
Invasion of the Two-Band Transoceanic Clones: Whodunit?

Antenna Connections
By Dan Farber AC0LW
Wire Antennas Part Two: More About Dipoles and Other Creatures

The Spectrum Monitor is available in PDF format which can be read on any desktop, laptop, iPad®, Kindle® Fire, or other device capable of opening a PDF file. Annual subscription is $24. Individual monthly issues are available for $3 each.

Ken Reitz, KS4ZR, is publisher and managing editor of The Spectrum Monitor. Contact him at [email protected].

Ham College episode 37 is now available for download.

General Amateur Radio Exam part 8. CW Operations, Q-Codes, Inductors, Transformers.
01:06:20

Download
YouTube

George Thomas, W5JDX, is co-host of AmateurLogic.TV, an original amateur radio video program hosted by George Thomas (W5JDX), Tommy Martin (N5ZNO), Peter Berrett (VK3PB), and Emile Diodene (KE5QKR). Contact him at [email protected].

Last weekend's CLE yielded a mixed-bag of propagation. Friday night's conditions were the best of the three nights here in southwest B.C., but others found things a little different ... such are the vagaries of radio's magic.


All told, I logged 40 NDBs in the specified frequency ranges, with five of the logs being all time 'new catches'. After chasing NDBs regularly since the mid-80's, new ones do not come along too often. It's now fairly clear that as the Sun seriously starts to quiet down once again, propagation on the lower bands, especially the MF and LF part of the spectrum, is quickly improving ... a nice change over the past several years of continuous prop-killing geomagnetic activity during the downhill slide of Cycle 24. It looks as though things will be much better over the next several years as things get even quieter.

The highlight of the weekend was 'TOY' - 260kHz, from Tongoy, Chile. Although on the air for many years, this was the first time I have ever heard it ... on both Friday and Sunday evenings.

Located in coastal central Chile, 'TOY' runs some serious power at 3,000 watts. Along with its large vertical and rural location, I'm surprised I haven't heard it before.

Tongoy, Chile courtesy: https://www.google.ca/maps

The nearby airstrip in seaside Tongoy is apparently no longer in service and the beacon appears to be an 'enroute' navigational beacon, similar to the high-powered ones in many unpopulated regions of northern Canada.

TOY-260 courtesy: https://www.google.ca/maps

Tongoy Airstrip courtesy: https://www.google.ca/maps

I have to wonder just how long beacons of this type will be useful enough to maintain as most aero navigation is now reliant on much more accurate GPS, RNAV and RNP systems ... time will tell, but NDBs appear to be going silent with increasing frequency throughout North America.

Another highlight was 500-watter 'QY'-263kHz, located in the heart of Sydney, Nova Scotia and not logged here since 2013. 'QY's large vertical appears to be located in a residential area, but perhaps the beacon was there long before the neighbours moved in. I'll put 'QY' into the receiver's memory as a good indicator of propagation to the east.

QY-263  Sydney, NS courtesy: https://www.google.ca/maps

Logged using the Perseus SDR and inverted-L tuned to 300 kHz:

27 08:00 260.0 TOY Tongoy, CHL
27 08:00 260.0 ZXS Prince George, BC, CAN
27 08:00 260.0 YSQ Atlin, BC, CAN
27 06:00 260.0 MTH Marathon, FL, USA
27 06:00 260.0 JH Jackson, MS, USA
27 07:00 260.0 SNE Santa Elena, TX, USA
27 08:00 261.0 D6 Fairmont Hot Springs, BC, CAN
27 08:00 263.0 OAY Norton Bay, ALS
27 06:00 263.0 CVM Alton, IL, USA
27 10:00 263.0 3Z Russell, MB, CAN
27 07:00 263.0 BF Scottsbluff, NE, USA
27 06:00 263.0 QY Sydney, NS, CAN
27 10:00 263.0 YBB Kugaaruk, NU, CAN
27 07:00 263.0 ZQT Thunder Bay, ON, CAN
27 11:00 264.0 SZT Sandpoint Apt, ID, USA
27 08:00 264.0 ZPB Sachigo Lake, ON, CAN
27 10:00 266.0 ICK Annette Island, ALS
27 14:00 266.0 XD Edmonton, AB, CAN
27 14:00 266.0 VR Vancouver, BC, CAN
27 05:00 266.0 BZ Bozeman, MT, USA
27 08:00 266.0 GH Fort Good Hope, NT, CAN
27 07:00 266.0 SLE Salem, OR, USA
29 09:00 266.0 PYX Perryton Ochiltree Co Apt, TX, USA
27 05:00 268.0 ZWL Wollaston Lake, SK, CAN
27 05:00 269.0 YK Castlegar, BC, CAN
29 10:00 269.0 BEX Bloomfield, IA, USA
27 06:00 269.0 UDE Delta Station, MB, CAN
27 06:00 269.0 PK Park Rapids, MN, USA
27 14:00 269.0 ZW Teslin, YT, CAN
27 07:00 512.0 HMY Lexington, OK, USA
27 07:00 515.0 OS Columbus, OH, USA
27 06:00 515.0 PN Ponca City, OK, USA
27 07:00 515.0 CL Cresent Beach, WA, USA
27 05:00 516.0 YWA Petawawa, ON, CAN
27 07:00 521.0 ORC Orange City, IA, USA
27 05:00 524.0 MNL Valdez, ALS
27 05:00 524.0 HRD Hardin, TX, USA
27 07:00 525.0 ICW Nenana, ALS
27 05:00 529.0 SQM Sumner Strait, ALS
27 13:00 529.0 FDV Nome, ALS

The logs / reports from all participants may be viewed (once they have been posted) here  on the NDB List website.
Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

During my ongoing apprenticeship in D-Star, I continue to make mistakes and, mostly learn from them.

My latest: To “simplify” use of the DR feature of Icom ID-51A+, instead of loading all 750 repeaters the machine can hold, I loaded only those from areas where I expected to travel; i.e., Georgia, Florida, Tennessee, Kentucky, Ohio, and the Carolinas. Then, I promptly forgot having done that. Consequently, when I went to New York last weekend, I was dumbstruck that there were “no” D-Star repeaters in all of New York City or its environs. Flabbergasted, I was. When I saw the closest showing on my radio was in Ohio, I recollected what I’d done. So, what to do?

I traveled without my handy-dandy RTS programming cable and also sans computer; bringing only a tablet on this short trip. But, there is a micro SD card in the ID-51 and one in my tablet, so maybe I download the complete North America repeatercropped-id-51a info from http://www.dstarinfo.com to the tablet, format the tablet’s SD card in the radio, put it back in the tablet, copy the list to the card, put card back in radio and Bob’s Your Uncle I’ll be in business. I had several hours to kill and was situated in a warm and pleasant Italian restaurant in Briarcliff Manor at lunchtime with no crowd, so I could immerse myself in pizza, beer and ham radio fiddling with no pressure – perfect!

Well, actually maybe not so perfect; first, getting the SD card out of the tablet was tricky and ultimately required the use of a borrowed lady’s earring post to release the little door (we hams are resourceful!); then, I find out the repeater list will not download to an Android tablet and neither will the needed CS-51 program. But wait, there’s still hope: the repeater list can be downloaded as a csv spreadsheet file so let’s try that. By golly, that appeared to work as a download but alas, not as an upload. Nothing is as simple as it ought to be. Threw my hands up, downed my beer, and called it a day.

Days later, back home with computer I learned that the CS-51 (or the RTS equivalent) is totally necessary, and also that naming a new icf file has to follow the awkward format exactly, i.e., Set20180114_01 and not a more user-friendly “Jan 14 2018 settings,” even though the Nifty! Mini-Manual says you can. I did, however, learn how to program the radio using the SD card and not relying on the RTS cable which could be handy next time I’m in survival mode.

So now I have 750 repeaters loaded from all over the United States and Canada in my radio so I can’t run out unless I travel further abroad, and guess what, my HT is barely heavier than it was before!

Wayne Robertson, K4WK, is a regular contributor to AmateurRadio.com and writes from Georgia, USA.