15 August 2021

Schlepping It All Around

 Well it's Sunday, and it's turned into '705 Sunday' at the QTH. And why not... can't do much else, it's so damned hot and humid here in the Peach State, as we sit and await the potentially possible arrival of Hurricane Fred.

For a few weeks now I've been contemplating better ways to carry the IC-705 to the field. So far I've been using Pelican cases (real Pelican cases, not the cheapo Harbor Freight knock-offs). They work great and provide unparalleled protection. But if I just want to grab a radio and accessories for a quick trip to a park the Pelican case(s) are bulky and gobble up too much space. Plus, it's hard to walk down a trail lugging a Pelican case. So I thought I'd give a backpack a try.

I took a pass on the Icom LC-192 backpack. It's over-priced, not sized well for (ahem...) 'larger' Americans, and I don't plan on talking on the 705 while I walk, so I don't need all the antenna brackets and pass-thru ports. I just need a backpack that provides good protection and enough space for the radio and accessories I want to take to the field.


Too expensive & too small

So, having some experience in the photography world, I figured a good camera backpack might do the trick. These backpacks are designed with two goals in mind. First, to protect the somewhat fragile and very expensive camera gear inside. Second, to provide ease of access. Perfect requirements for my IC-705 deployment project. 

There's plenty of camera backpack options out there (just Google 'DSLR backpack'), with some low-end examples selling for around $30 and some pro models selling for over $300. Three hundred bucks may sound like a lot, but when you are carrying around $10,000 of professional camera gear, paying $300 for best-in-class protection makes sense.

I'm trying to proof a concept - can I put an entire HF/VHF/UHF station into a backpack? Radio, antennas, tuner, laptop, battery, cabling, everything I'd need for several hours of off-grid operation. But I didn't want to spend a hundred bucks or more on a 'concept' backpack, so I went searching. I found what I was looking for on Amazon - one of their 'Basics' line of products that got very good reviews. Even better, the cost was just a smidge under fifty bucks.

The backpack arrived a few days ago, and I have to say I'm pretty impressed. While it's not Mystery Ranch quality (if you know Mystery Ranch you know what I'm talking about), but for $50 it's surprisingly well designed and put together. Stiff and heavily padded compartments using dense foam, lots of accessory pockets and an overall good layout. The backpack isn't wateproof, but to my surprise Amazon includes a rain cover as part of the purchase, a nice touch. Just in case though, I plan on bringing along a few standard issue M1-A1 Hefty trash bags.


What's in the backpack?

This afternoon I decided to do a test load-out, to see if it would hold all the items I need for a few hours in the park. I was delighted to find that not only would it hold what I need, there's actually space left over for some non-essentials (like a cold Diet Coke).




So what fits? Let's look at the list:
  • IC-705 with the Windcamp 'cage'
  • AH-705 tuner with cables
  • 4.5 amp hour LiFePo battery (Bioenno)
  • Speaker-mic
  • 25' of lightweight RG-316 coax
  • Par EndFedz Trail Friendly 10 - 40 meters wire antenna
  • Comet HFJ-350 multi-band HF vertical ('Toy Box')
  • 23' random wire antenna with counterpoise
  • UHF/VHF/50 mHz 'rubber duck
  • Small bag of connectors and jumper cables
  • Fully rugged Windows 10 tablet/laptop with detachable keyboard and mouse
  • Notebook & pen
  • IC-705 documentation

I'll be adding about 30' of lightweight braided nylon cord and a throw weight to get wires up over tree limbs, and a Diet Coke.

This setup should allow me to operate voice and digital for at least 4 hours completely off-grid, and provide ease of carry and good protection. 

If you are interested in the backpack you can view it here on Amazon:




Is this backpack the be-all and end-all for this project? No. If I find the concept works as I expect it will I plan on investing in a more expensive camera backpack with some better exterior lash point options for things like carbon fiber poles as antenna supports. But for now, this looks like a crackerjack setup.

Stay tuned and I'll keep you updated.

W8BYH out

08 August 2021

Going Wireless

Back in June I put up a post where I outlined the USB RFI issues I've had with my IC-705 and stated that I no longer recommend it.

Recently a fellow ham asked me if I still feel the same. Yes, but...

In the interim I've had the chance to test the Icom RS-BA1 version 2 rig control and interface software, and I can say unequivocally that the Remote Utility portion of the RS-BA1 suite is the savior of the IC-705. It is well written, robust, stable, well documented and is easy to install, configure and get working. When set up, I have been able to run Winlink, JS8CALL, Fldigi and WSJT-X over wi-fi. By switching to wi-fi, all the rig's RFI issues go away. This, more than anything else, proves that the issue really does lie with the USB cable and connection.

The only drawback with the RS-BA1 software, and it's a biggie, is price. You have to shell out an extra $150 for a copy of the software. My position is that IC-705 owners shouldn't have to shell out anything extra just to get their radios to work as advertised. Icom needs to provide the RS-BA1 software free of charge to all IC-705 owners. Really, all they need to provide is the Remote Utility package. It would take a smart programmer at Icom about a day to develop an IC-705-only version - just strip out the support for all the other Icom radios and make it a free download on the Icom website.

But Icom doesn't seem to think there's a problem. Actually, they've acknowledged the problem, and have admitted there's no fix, but they don't seem too bothered by it. They continue to state in their product literature that the radio can be run on digital modes via USB. So, the radio stays on my 'not recommended' list unless the potential buyer is interested in running it voice-only, or is willing to shell out an extra $150 to get the radio to run like it should. Or until Icom provides the RS-BA1 software for free.

But it's not all grim, and we'll be talking more about the IC-705 - the good points - in later posts.

And for those of you reading this and shouting "Hey, what about wfview?", we'll talk about that down the line, too.

W8BYH out

11 June 2021

Told Ya' So

A week ago I published a post titled The IC-705 Reassessed, where I pulled back my previous endorsement of the IC-705 due to the often crippling RFI issues. I linked my post to the most active IC-705 Facebook page and, as anyone with experience with Facebook can guess, the flamers and the tolls crept out of the shadows and accused me of everything from exhibiting signs of advanced dementia to criminal-level stupidity when it comes to my ability to investigate and mitigate RFI.

I knew it would happen, and I enjoyed the repartee. 

But I also thought I'd give Icom a chance to respond to the issue, so I sent them a tech support request through their website:

"Dear Icom, I have a problem with RFI over what I suspect is the USB connection that is nearly impossible to mitigate. The issue exists for both the battery charging over USB connection and USB rig control. I've tested with a variety of USB cables, all heavily 'choked' using ferrite cores, and tested with a small group of Windows 10 laptops and tablets. The RFI, particularly on digital modes, overwhelms the rig. The problem exists on 20, 40 & 80 meters, but seems worse on the lower bands. Has Icom worked out any mitigation strategies for this issue?"

Here's the response I got from Icom USA:


Well gee, even Icom admits there's an issue...

I have a lot of confidence that Icom will get this fixed. The IC-705 is a flagship product in Icom's Amateur Radio lineup, and the rig has the potential for a very long (and very profitable) production run, so Icom knows they have to get this right. I think my biggest fear is that the RFI issue isn't one that can be addressed in firmware, and IC-705 owners will have to send their rigs back to Icom for board-level work.

I intend to 'poke' Icom USA on this at regular intervals, so stay tuned.

W8BYH out

05 June 2021

The IC-705 Reassessed

Two months ago I wrote an initial review of the IC-705, giving it all-around high praise.

Today I have to pull back on that somewhat slobbering fanboy of a review, and remove the IC-705 from my 'recommended' list. The radio has a major, and crippling, RFI issue if you want to run it on digital modes over USB under field conditions.

Simply put, the induced or coupled RF noise picked up by the USB cable floods the rig with RFI. We are talking noise and hash from one end of the band to the other, and the noise gets worse if the software you are running, like Winlink, initiates a command dialog with the radio (in Winlink, that's referred to as 'starting a session'). And it's a complex issue. It's not simply USB line coupling, or laptop interference, or antenna location. It seems to be a sensitive interplay of all three. You can never really be sure what the real root of the problem is. The one key factor, however (based on my testing) seems to be antenna location. The further away your antenna, the less of a problem you will have.

I didn't notice this issue when I did my first post back in March because I hadn't run the IC-705 in a portable (field) environment. All my testing was done in my shack, where my antenna is 75 feet away on the other side of my house. Operating this way, the radio is a champ on digital modes, and that's how I wrote it up in my March review. But a week later I set the radio up at a local park using my Chameleon vertical antenna and the same laptop I use in my shack, and that's when I discovered the noise. I've since had the rig in the field twice more, testing with various antenna setups - a mag loop and an EFLW - and the problem is always present.

Here's a video I made while using the IC-705 and my Chameleon mag loop antenna a few weeks ago during a POTA activation:



Now, this RFI problem is not unique to me, or to my radio. I have three friends in my local Amateur Radio club who own IC-705's and they report the same issue. If you go to the IC-705 Facebook page or the IC-705 Groups.io email reflector you'll find plenty of discussions on this issue. Of course the fanboys will crawl out of the woodwork and tell you you're not keeping enough cable separation, or you are using the wrong type of USB cable, or you've got a 'noisy' laptop, or you are not using enough chokes, or the solar flux-to-ground coupling ratio is too low, or some such bullshit. I have tried every reasonable fix for this issue. I've tested against multiple laptops and Windows 10 tablets, I've tried a wide variety of heavily choked USB cables. I have enough common mode chokes attached to the feedlines to soak up a nuclear-level EMP. Nothing fixes the problem entirely - the 'hash' is always there at some level.

As I mentioned above, the one big delta - the variable that seems to provide the best mitigation - is antenna location. All things being equal - the same radio, laptop, USB cable, feedline chokes and antenna design (EFLW) - at home I get virtually no noise or hash when running digital modes, in the field the radio is overwhelmed by RFI.

The IC-705 was specifically designed for portable field use, and that's how Icom markets it. The owner has a right to expect that the radio will work in the field, on all modes, with a less-than-ideal antenna and cabling setup. The expectation shouldn't be that the owner has to schlepp around 75' of coax and enough iron ferrite (in the form of chokes) to sink sink a small boat, just to send a Winlink message. 

So let me recap where I'm at with the IC-705:

  • On voice modes, whether in your shack or portable, this is a superb little rig. It is every bit as good as its fanboys claim it is
  • On digital modes, in the right environments, the IC-705 is a digital mode beast. I have run my rig, in my shack, on JS8CALL for eight hours continuously and it never broke a sweat
  • Portable on digital modes, however, it's a mess, particularly with Winlink and JS8CALL. The RFI issue makes it all but unusable and it's virtually impossible to fully mitigate the interference

Because of this last bullet point, I no longer recommend the IC-705.

This RFI issue is Icom's to address and fix. Frankly, I'm surprised this issue wasn't caught by Icom in testing, and I'm disappointed that the ARRL test lab didn't catch is in its otherwise outstanding review of the radio.

There's more to come on this RFI problem. Right now I'm focusing on the radio's wi-fi connectivity feature as a solution, but I'm still testing and evaluating. So stay tuned for an update on the 705 saga!

W8BYH out

01 June 2021

It's June 1st - You Know What That Means!

 


I get almost as excited about the opening of hurricane season as I do about Christmas. For those of us who live 'on the corner' (on the corner of the southeast US) - Florida & Georgia - we are prone to get hammered by both Atlantic basin storms, and Gulf of Mexico storms. It's inevitable. Set your watch by it. Then toss in the southeastern 'tornado alley' that stretches across northern & central Georgia, and this state gets some complex and dangerous weather from March through September. 

So 'Jawjah', get your emergency radios and flashlights ready, go buy a couple dozen spare batteries, keep your phones charged, your gas tanks full, and keep your weather eye on the horizon.

Because it's coming. Maybe not this year, or next, but it's coming.




And on that cheerful note...

W8BYH out

12 May 2021

Position, Navigation, Timing

The on-line magazine GPS World posted an article today that brought out the geek in me. The article titled GAO Report: 'Use resiliant tech vs. GPS as DOD primary PNT' discusses vulnerabilities in our GPS system and encourages development of autonomous solutions that are less vulnerable to jamming or unintentional interference.


Here's the bottom line: our GPS signals, in fact all satellite navigation (GNSS) signals - the US GPS (Navstar), the EU's Galileo, the Russian GLONASS, the Chinese Beidou, and others like India's regional NavIC network - are relatively easy to jam. In fact, hostile actors like North Korea and Russia do it all the time. Yet dependency on GPS-based positioning, navigation and timing continues to grow within the DoD (and more exponentially, in the civilian world). And as dependency grows, vulnerabilities grow.

What does this mean for Amateur Radio? More and more radios are being designed with built-in GPS receivers. They've been in HTs for well over a decade (every DSTAR and C4FM HT, and most mobiles, now have integrated GPS). The GPS signals are used mainly to determine location - figuring out where you are so the radio can find nearby digital repeaters. But more and more HF radios are being built with integrated GPS receivers. There's a few reasons for this. For example, Icom's new IC-705 has a built-in GPS receiver that is there mainly to locate the radio for DSTAR functionality. But the GPS receiver signal can be out-boarded to a computer to support location based apps and synchronize the computer's clock with GPS time.

This functionality will become increasingly important as the ham radio community moves more and more to 'time sliced' digital modes like FT8 and Automatic Link Establishment (ALE). There is even talk about expanded use of frequency hopping, which is legal in the Amateur Radio Service as long as a public frequency hopping key is used. Frequency hopping is absolutely dependent on precise timing, and all radios in the frequency hopping network must use the same time base. The best source for that common time base is GPS.

[Geek segway here. So, how come GPS time is so accurate? Each US GPS satellite carries two atomic clocks, and those clocks are constantly monitored and adjusted by the GPS ground control stations. An extremely accurate time signal is continuously broadcast by every satellite, as part of the navigation signal. A GPS receiver can strip out that time signal and make it available for use by other applications. This is why there's a GPS receiver on every cell phone tower in the US. The tower doesn't care about the location signal - it knows were it is. What the receiver does is provide the very precise time signal needed to coordinate cell zone hand-over.]

What impact could GPS jamming have on Amateur Radio? Honestly, not much in the near term. We're still not dependent on extremely accurate time signals. The dependency is coming, but it's not here yet and likely won't be for years. Additionally, the risk of a hostile actor like the Chinese or North Koreans jamming GPS signals over the continental US is unlikely; such an act would be interpreted as an act of war, and as goofy as some of our enemies are I doubt any of them would be dumb enough (or are capable enough) to try something like this.

But large-scale Amateur Radio dependency on precise time coordination is coming, so we'll keep an eye on this. After all, it's not like I've got anything better to do with my time.

W8BYH out

08 May 2021

The Worst Book You Need To Read

This is very much an 'anti-woke' post, so if you are offended by concepts like personal responsibility, the death penalty, useless degrees and ugly truths, then do us both a favor and move on...

________________________________________________________________________________


Still here? OK, let's get going.

A friend of mine, fellow ham, and something of a medical expert (a real one, not a self-appointed one) has been recommending the book One Second After for over a year now. So recently I had some holes in my Kindle reading list and decided it was time to give this a read.

I'm of two minds on this novel. On one hand, it covers a lot of critical topics related to a total collapse of society due to something like an electromagnetic pulse (EPM). On the other hand, it's poorly written and can be a tough slog (more on this at the end). 


The author, William Forstchen, clearly has a strong grasp of the issues related to an EMP event. Forstchen uses the (somewhat likely) nuclear weapon scenario - North Koreans and mad mullahs cooperating to pop air-burst nukes across the US. The same thing can happen if the Sun belches out a Carrington Event-level coronal mass ejection (CME) (less likely in the short term, but inevitable in the long term). One of the things I like is that Forstchen almost completely avoids the silly survivalist fanboy stuff - which rifle or caliber is best, which knife blade shape or handle material is best, which lean-to shelter design is best, etc. Instead, he focuses on the immediate and long term impacts on society. When national, state and even county-level government is incapacitated or wiped out, how do small isolated cities and municipalities manage issues like establishing a functioning government, selecting leaders, prioritizing resources, providing services, enforcing laws and establishing a common defense. 

The decisions quickly become pretty basic, and brutal. How do you manage a shrinking supply of food and medicine? How do you ration medical care? What do you do with hardened criminals when they can neither be jailed, banished, or effectively rehabilitated? Do you establish and carry out a death penalty for crimes that used to just get people locked up, but now are a direct threat to the survival of a small society (stealing food or medical supplies, sabotaging key infrastructure like water purification systems, etc.). In this situation, morality gets re-defined, and communities will be grasping for ideas and rules around which they can build a functioning moral and legal center. When the nukes go off, all fluff and pretense is stripped away. No 'wokeness', no ambulance chasing lawyers threatening to sue, no freeloading. You step up and contribute in real ways, or you die.

The book is a novel, and Forstchen sets the story in a semi-rural town in North Carolina. The town is small and isolated enough that everybody knows everybody, but not so isolated that outside influences don't come into play. This sets up a very plausible scenario of a small town forced to fend for itself with only the resources it has on hand, and ultimately having to make hard choices about how to deal with external threats, from relatively innocent refugees just looking for food and water, to roving bands of criminals intent on raping and pillaging as they move from town-to-town.

Let me put this out there for the Amateur Radio audience - there's virtually no discussion in this book of ham radio beyond a passing reference about checking to see if some unnamed ham radio operators still have working equipment. Like I said, this book focuses mainly on the larger societal impacts of an EMP event, not the nuts and bolts of survival. Does Amateur Radio have a role in this scenario? Yes, but only if modern, sensitive radio gear survives. This implies foreknowledge of the attack or event, and the ability to shield equipment from the EMP pulse. We'll likely have a day or two of warning if it's a CME. An attack by hostile actors will come with no advanced notice. Your spiffy new SDR radio is just as EMP-proof as your iPhone, which means it'll be toast.

As I mentioned above, the author clearly has a firm grasp on the overall impacts of an EMP event (he's even testified before Congress on the subject). A post-EMP world will be a grim place. There will be no electric power - the power grid will be fried. Literally fried. Everything electronic will be gone - either destroyed in the initial high energy pulse, or incapacitated by the lack of electricity. That's not just your laptop and smartphone. Your cars won't start. You won't be able to get to your bank accounts. All of your electronic appliances will be destroyed, and this includes any medical devices you depend on. The electronic controls that manage things like the water purification systems in your municipal water supply won't work. There'll be no 911 dispatch. No police response. No fire response. No EMS response. Fresh, refrigerated and frozen food will spoil within days. There'll be no lights. When the sun goes down, darkness will overtake everything, and predators - human and animal - will rule the night.

From a human behavior perspective, it'll be a world turned upside down. The best and worst in people will quickly emerge. This is when the true leaders will rise to the surface - people who know how to motivate others, manage resources, set goals, organize effort, set the example, and make the right decisions regardless of how tough they are. These will be mostly ex-military (mainly officers and non-commissioned officers), law enforcement and emergency services personnel. It's also when we'll see the value of the people who keep our infrastructure up and operating - electricians, carpenters, mechanics, plumbers. Medical personnel, particularly doctors, nurses and PAs with strong backgrounds in emergency medicine, general medicine and public health will be worth their weight in gold. Sadly, they'll be working with quickly dwindling stocks of medicines and other supplies, and they'll soon be battling to control basic health issues like water and insect-borne diseases (dysentery, malaria, etc.), infections, malnutrition, and a whole host of 'third world' health problems.

Who else would be considered of value? If you learned a trade or got a degree in something useful like electrical or civil engineering, or served in the military and developed basic leadership and organizational skills, or know how to farm and raise livestock, you have something to contribute and should be OK. But let me be blunt here - if you never developed a work ethic, spent your days playing on-line games, or never thought beyond the next welfare check, you better be willing to learn fast and develop some needed skills, or you will be quickly turned out. And no, cooking meth is not a 'skill', and that women's studies degree you're hoping Bernie Sanders will help you pay off will be as useless as tits on a boar.

I also need to touch on something that Forstchen mostly ignores - the importance of faith, church communities and the clergy. Many people will immediately turn to their local pastors and their church community for guidance and support. In my opinion, clergy (I'm talking mainly about trained and ordained Christian and Jewish clergy here) will be absolutely essential. They will provide the moral guidance and the left and right boundaries needed as leaders struggle with the task of rebuilding a functioning society. In addition, many Protestant denominations like the Mormons, the Salvation Army and the Southern Baptists view disaster relief as an important ministry. They have the organization, training and supplies needed to provide at least short term relief in many communities.  

If you think this is all just academic and nobody really knows what will happen, I've got news for you. This happens in small and limited scale almost every year. Think Hurricanes Katrina and Maria. Immediately after Katrina, people in the rural areas of lower Louisiana and Mississippi who did not evacuate, but had basic skills and emergency supplies, did OK. Not great, but OK. New Orleans, on the other hand, quickly descended into a lawless and chaotic cesspool. I'll leave it up to you to figure out why. The same thing played out in Puerto Rico after Hurricane Maria in 2017. We all heard the tales of woe coming from the major cities on the island, as the elected politicians (another useless skillset) pointed fingers at everyone but themselves. But in the rural areas of the island, in the small towns and villages that were used to frequent power outages and poor communications, the residents essentially did OK. The had the necessary supplies - generators, battery powered radios, flashlights, food, water, etc. They had also developed the mental toughness needed to see them through something like Maria. 

Getting back to the book, while the author has a firm grasp on the aftereffects of an EMP or CME, he's no novelist. The book is readable, but Forstchen has no real experience in writing dialog, his characters are poorly formed, and he suffers from a bout of what I call 'Tom Clancyism'; all the good guys are heroic, all the bad guys are the lowest of the low. All former military are steely-eyed combat veterans who never make bad decisions. All law enforcement are highly competent, all politicians are crudballs (well, at least he got that right). 

But the book is important because it makes you think. I urge you to read it and then spend some time considering your own situation. Do you have the skills, the basic supplies, the mental attitude and toughness it will take to survive the rebuilding of a society that has been set back 150 years?

W8BYH out