Build a $2 USB Radio Programming Cable

Frustrated with that generic programming cable? This $2 solution might just be your ticket to sanity.
Let’s See…You purchased a radio and programming cable, loaded the software, and that’s as far as you’ve gotten.  You’re fighting with error messages:
– Radio did not respond
– Could not open COM port
– Run Time Error
and Windows (TM) 10 keeps changing your drivers.Now you do what many owners do. Put the radio in the drawer to be worked on later.  This is like buying a rollaway treadmill and putting it in the closet until the next time you want to exercise.  (NOT gonna happen)But wait, yours has the company name and logo right on the cable.
– It doesn’t matter. Keep reading.There are a few options available, such as an  FTDI  cable.  It’s truly Plug ‘n Play, and costs about $20.But here’s a project that just might solve the issue for around $2. All you need is a small flat blade screwdriver, a soldering pencil, and a CP2102 board.

CP2102

The CP2102 is a USB to TTL UART chip.   What?
Long story short…  It’s the same thing that’s in your current cable now, except these work.

CP2102 boards can be found on  eBay  for around $2 and on Amazon.

Here’s How

Let’s start with that original cable.

Take a small screw driver and pry the open the case from the back where the cable enters.

It should only be snapped together.

Unsolder the 3 wires connected to the board.
GND is Black, TX is Red, RX is White

Solder the 3 wires to the corresponding terminals on the new board.

Note 1: Some boards may have the TxD and RxD reversed. If it doesn’t work the first time, reverse the two wires. No damage has been done.

Note 2: Some boards have pins on the back requiring small connectors. You can either remove the pins, solder to them, or use the connectors. Whatever floats your boat.

Driver

When you insert the new board into the USB port, give Windows a chance to find and load the new driver. Should take about 30 seconds. When it says Driver Found, you’re done.

If the driver is labeled CH340 instead of CP210x in Device Manager, that’s not a problem. Both chips are designed to do the same thing.

But I don’t have a Cable

If you don’t have a generic cable, you can use 2.5 and 3.5mm stereo jacks. Here are the pin outs, and what Jim’s  (KC9HI)  cable looks like.

Cosmetics

If you are adventurous, try retrofitting the new board inside the original plastic housing.  This will require a Dremel tool, X-Acto knife, Glue, and some patience, but it can be done.

If the board only has 5 terminals instead of 6, it’s not an issue. You only need GND, TX and RX.

Some come protected with a piece of clear heat shrink over the board so you can see the cool blinking lights.

Note 3: If you are trying to retrofit the board inside an existing shell, the red board below is a bit shorter and easier to fit.

For a dollar or so more, you can find the same boards in a metal case.

What’s the Advantage

– First and Foremost, it works. Take the radio out of the drawer, program it and have some fun.

– Next, it only cost around $2 to save the generic cable from the trash.

– Very Important – Bragging Rights. Now, when you go to a club meeting and someone says they can’t get their cable to work, tell them they can build their own, just as you did.

I hope you had fun with this project.  It’s super simple and very rewarding. I’ve made several and never had a failure. Say goodbye to driver issues.

My thanks to Jim KC9HI for his input on this project.

John 'Miklor', K3NXU, is a special contributor to AmateurRadio.com and writes from Pennsylvania, USA. Contact him at [email protected].

Shack photo

This was me on the 2m FM net in East Cambridgeshire last night. There were only 3 of us on last night. These days I tend to use WSPR quite a bit as my voice is still pretty poor. We meet on 144.575MHz FM at 8pm local time most Mondays. Note, this is in the all-mode section. Newcomers are always welcome to join us. QSOs are never more than 1 hour and frequently much less.


Roger Lapthorn, G3XBM, is a regular contributor to AmateurRadio.com and writes from Cambridge, England.

630m Trans-Pacific Path Alive


In spite of the recent high levels of geomagnetic disturbance (or maybe because of it), just as it did last year at this time, the path between North America and Australia has sprung to life once again. Last night saw the reception of  both WH2XND (NI7J), in Phoenix and WG2XXM (K5DNL), near Oklahoma City, by VK2XGJ in New South Wales, Australia. Not to be left out, VK2DDI, also in NSW, copied WG2XXM as well. Some of K5DNL's 630m gear can be seen here.

courtesy: John Langridge (WG2XIQ / KB5NJD)

The American beacons were operating in the WSPR mode, which has become very popular amongst 630m experimenters as well as those just interested in listening-in. WSPR is not a QSO mode but strictly a one-way 'beacon' mode. Although two stations may each spot each other, it is not considered to be a valid two-way QSO. A check of evening  WSPR activity will often reveal dozens of stations actively spotting what they are hearing.

VK2DDI runs the Berry Mountain Grabber, providing other VK and ZL experimenters a handy way of checking their system progress or propagation conditions but during good T-P nights, it can be a good place for U.S. stations to watch for their signals as well.

If you have been doing any WSPR work on HF, you might be surprised at what you can hear down on 630m, even without a dedicated antenna for that band. Surprisingly good results can often be had with a non-resonant antenna as the signal to noise ratio can often be better even though signals may sound weaker. Give it a try and spot what you hear!

If you are interested in learning how to receive WSPR, here is a nice tutorial by ZS6SGM. 

Should you be interested in knowing more about obtaining a Part 5 licence to transmit on 630m, John, KB5NJD / WG2XIQ, has a wonderful 630m resource page here, as well as more details about the recent down-under receptions. While there, be sure to check out his up-to-date 630m links page. He can be contacted via email or you can find him hanging-out most nights on the ON4KST kHz (2000-630m) chat page.

To keep on top of what is happening or who is on-the-air, most LF'ers rely on three sources:


Radio amateurs in Canada have had 630m as an amateur band since May of last year but unfortunately are not allowed to contact any of the experimental stations. Hopefully the U.S. will also obtain 630m as a ham band some time soon. In the meantime, a Part 5 licence for any U.S. amateurs would be a good way to be all set when that day eventually comes!

Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

Frog Transceiver

You will have doubtlessly heard about the super cheap Pixie QRP TXRX. Well for those feeling a little flush there is a (and always has been) a real high powered alternative knocking about on eBay. The Frog Transceiver is around the £8 mark at the moment and will give you about 1.5w on 40m and an evenings worth of fun putting it together.

Frog TXRXI’m off work this week for my summer hols and in between kayaking on the sea, being eaten alive in Ennerdale by voracious midges (my own fault for going there when there was no wind and not taking any insect repellent) I’d planned on assembling this little friend to add to my growing collection (along with the Pixie).

The PCB is as one would expect, not bad but not brilliant, components are fit for purpose but the packaging was a little shabby with everything just thrown in a bag, not much protection for the IC’s. So I’m getting my excuses in early….this might not work!

Still £8 is less than an evening at the pub, less than a trip to the cinema (for one) but more than a Pixie ?


Alex Hill, G7KSE, is a regular contributor to AmateurRadio.com and writes from Cumbria, UK. Contact him at [email protected].

The 10 Essentials for Hiking (and SOTA Activations)

hike-shoe-printMost backcountry hikers are familiar with the Ten Essentials that you should take with you whenever you head into the wilderness. Over the past few years, I noticed that I was getting a bit sloppy with regard to what is actually in my pack when I head out on the trail. This hit home one day when my GPS battery went dead. I fumbled around to find my compass which was supposed to be in my pack. Well, it was in my pack, the other one that I left at home.

This caused me to review the list of ten essentials to make sure I had the right stuff in my kit. A search on the internet revealed that the classic list of ten has been modified and augmented by various people to make it better. (Innovation runs rampant on the interwebz, you know.) One of the better resources I found was this page on the REI web site, which explains how the Classic Ten Essentials have been updated to the Ten Essential Systems:

  1. Navigation (map and compass)
  2. Sun protection (sunglasses and sunscreen)
  3. Insulation (extra clothing)
  4. Illumination (headlamp/flashlight)
  5. First-aid supplies
  6. Fire (waterproof matches/lighter/candles)
  7. Repair kit and tools
  8. Nutrition (extra food)
  9. Hydration (extra water)
  10. Emergency shelter

Read through the REI web page to get the fine points of this system approach. I won’t repeat that information here. They also include a Beyond the Top Ten list which calls out the need for:

Communication device: Two-way radios, a cell phone or a satellite telephone can add a measure of safety in many situations.

Of course, what they really mean is an amateur radio transceiver and antenna but they probably can’t say that in print due to licensing issues. (Not everyone in the backcountry has an FCC ham license. I know, they all should have an amateur license but many don’t…very hard to understand.)

So how are you doing with your Ten Essentials list? Are you consistent in taking along the right stuff in your pack? Any tips to share with hiking hams?

73, Bob K0NR

The post The 10 Essentials for Hiking (and SOTA Activations) appeared first on The KØNR Radio Site.


Bob Witte, KØNR, is a regular contributor to AmateurRadio.com and writes from Colorado, USA. Contact him at [email protected].

On a scale of 1 to 10

Today was about a 30 - maybe even more.

The day started sunny and bright. As soon as I walked outside at 7:00 AM, it was easy to tell it was going to be a hot one. Summer! I love it!

I set out one of my 12 Volt SLA batteries on a patio chair in the backyard and hooked up one of my small solar panels to get it charged up.  I had used the battery as a power source so I could program the Juentai VHF/UHF radio in the house, as well as to do some test transmissions.  At 20 Watts out, I depleted the battery rather quickly, so I took the opportunity to use sunny days both yesterday and today to get it back up to full capacity.

I had gone to Mass on Saturday evening, so I used the quiet time (and "cool" morning) to install the Jeuntai into the Jeep. I mounted it "sideways" to the front console in the Patriot, where the transmission gear shift stick is. This is a really lousy photo, but it will show you what I mean:


I had to go to Home Depot to get some shorter sheet metal screws. The ones that came with the unit were about 3/4" long. I put my hand up and in behind the housing/fairing and could not feel anything vital behind my proposed mounting area, but I still wanted shorter screws. I got some 3/8" ones that did the job magnificently. The unit will sit a few inches from my right knee, but it is completely out of the way and non-interfering with the operation of the car. Not that I use it that much, bit it's great to have VHF/UHF in the car again.

Shortly after, I went down the basement shack to see if I could work any lighthouses during International Lighthouse and Lightship Weekend.  The bands were terrible!  I managed to hear and work one - W8F, the Fort Gratiot lighthouse at Port Huron. Michigan.  QSB was terrible, but I gave Stan a 579 and he gave me the same.


Then at 1:30 PM, I left to take a short drive over to Dave KD2FSI's house. Dave was hosting the South Plainfield Amateur Radio Club's Digital Rookie Roundup effort.  He had his two Yaesu's hooked up and raring to go. He also had on display a Heathkit transciever that he recently bought at the Sussex County Amateur Radio Club Hamfest in July.  Talk about pristine!  Dave "lifted the hood" and let us take a look inside - it looked like it was built yesterday. It is immaculate, and looks like brand spanking new. And on the table next to it was an HW-8.

The bands were as terrible at Dave's house as they were at mine (surprise!). There wasn't a lot of Rookie RTTY activity, so Dave graced us with demos of PSK31 and the other digi modes and we had a great time shooting the breeze. Marv K2VHW and Drew W2OU were there in addition to a couple of Dave's neighborhood friends.  I think between Dave, Marv, Drew and I, we gave his friends a good enough rundown on Amateur Radio that they could have passed the Tech test had we given it to them!

I had to leave at around 3:30 PM as I had promised my son Joey and my wife Marianne that I would accompany them to the community pool this afternoon. They've made use of the pool a lot this summer, and I haven't - so I promised I would go today. As I was leaving Dave's house and saying my good-byes, Dave says to me, "Make sure you don't leave without your radio." All I could do was shoot him a "?????" look.  "The HW-8 ..... it's yours."

I was speechless. He had said that he had read somewhere (guess where?) that the HW-8 was my first QRP rig and that I had very much regretted parting with it years back.  He had his son scour eBay for a good deal and acquired it for me.  I was still speechless.  I managed to croak out a "Thanks, Dave - you shouldn't have". But that is soooooooo inadequate. Dave has a heart of gold and as much as that HW-8 means to me, Dave's frienship means even more. I can't ever re-pay his generosity, but that sure doesn't mean that I'm not going to try - somehow, someway, someday.


As you can see, the rig is in pristine condition, besides the writing on the power supply, there's not a mark or scratch on it.  Whoever had it made one modification that I can tell, they traded out the original RCA connector that was used for the antenna connection with an SO-239 - so that's perfect! This baby is going to get a lot of use. Yes, it's a HW-8, but I now have one back in my hands, and it's also a testament to the generosity of a great Ham and better yet, a great friend.

I did go to the pool with Marianne and Joey and even went in the water. I stayed at the shallow 3 foot end as I never learned how to swim as a kid.  Even so, Marianne, Joey and I stayed there for about two hours, enjoying the cool water and we played a game of catch with this "Wubba" pool ball (small, soft, floats, unsinkable) that Joey had purchased when we were up at Lake George.

The evening was rounded out with a delicious dinner of grilled Teriyaki chicken, baked taters and corn, all consumed while leisurely sitting around the patio table in the back yard. We were able to enjoy the cooler evening air and each other's company.

So, yeah, on a scale of 1 to 10, today was about a 30 - heck, maybe even a 50!

72 de Larry W2LJ
QRP - When you care to send the very least!



Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

Failed 136kHz QRSS3 test

Well, I optimised my 136kHz QRSS3 beacon match into my earth electrode “antenna” used on 472kHz and tested it in the house and right outside. All looked promising, so I headed for my local car-park about 1.8km  away. I was quite confident that with an E-field probe on the car I’d get a decent result. From the old QTH I got to the far side of Cambridge before I gave up as copy was so good!

Not a dicky bird – nothing at all, indeed I only got copy again when I entered our close at a range of a few hundred metres. As at VLF, the earth electrode “antenna” at this QTH is useless.

Not only that but at the end of the test I realise how poorly I still must be as I was totally exhausted. In my fitter days this test would have been totally trivial, but not any more. I think my trees and short baseline make this “antenna” totally out of the question at this QTH at LF. I need a better antenna for LF and MF use.

So, 136kHz was bad. A poor result and quite a lot worse than I was expecting. I was hoping for an encouraging result, but none was to be had.


Roger Lapthorn, G3XBM, is a regular contributor to AmateurRadio.com and writes from Cambridge, England.

Subscribe FREE to AmateurRadio.com's
Amateur Radio Newsletter

 
We never share your e-mail address.


Do you like to write?
Interesting project to share?
Helpful tips and ideas for other hams?

Submit an article and we will review it for publication on AmateurRadio.com!

Have a ham radio product or service?
Consider advertising on our site.

Are you a reporter covering ham radio?
Find ham radio experts for your story.

How to Set Up a Ham Radio Blog
Get started in less than 15 minutes!


  • Matt W1MST, Managing Editor