Shortly after acquiring a lab599 Discovery TX-500 earlier this year, I did what I always do: invest an insane amount of time in researching and configuring a dedicated field radio kit.
As I’ve mentioned numerous times, I’m a serious pack geek, so this is incredibly fun for me even though the choice is often difficult.
I like to buy packs and cases from manufacturers in the US and Canada when possible, so started searching through all of the options.
I wanted a pack that was compact, versatile, and offered proper padding (even knowing the TX-500 is a rugged little transceiver). I don’t handle my packs with kid gloves, so I expect them to cope with sometimes rough field conditions and still protect the gear inside. I also like a certain level of organization inside the pack.
I wanted the kit to be relatively compact, but large enough to hold the transceiver, all accessories and connections, logging pad and pencil, paddles, a proper arborist throw line, portable ATU, and a 3Ah LiFePo4 battery. A the end of the day, I wanted this TX-500 field kit to be fully self-contained.
In the end, I adopted a pack with which I’m already very familiar…
The Red Oxx Micro Manager
Red Oxx is my favorite pack company and if you’ve been a reader for any length of time, you’ve obviously seen a number of their bags and packs in my field reports.
Back in 2016, when they introduced the first iteration of the Micro Manager EDC bag, they actually reached out to me–as an existing customer–knowing that I had been looking for a good radio pack with proper padding (many packs don’t require side padding and internal padding). They sent me a prototype of the Micro Manager for my feedback and then incorporated some of my suggestions.
I also purchased a Micro Manager for my wife who quickly turned hers into a mobile art studio!
Much like my buddy Steve (AC5F)–whose XYL creates some amazing water color art in the field–my wife (K4MOI) is also an artist and loves to paint/draw during park and summit activations. Her art kit is always at the ready and she’s traveled with it extensively over the past five years.
The Micro Manager is a pack carried over the shoulder, much like a messenger or laptop bag. Those times when my field activations require a lengthy hike, I’ve simply pulled all of the items out of the Micro Manager (since I do modular packing, this is super easy), else I’ve even been known to stick the entire Micro Manager pack into a backpack!
Over the years, Red Oxx has made iterative upgrades to the Micro Manager including a pleated front pocket, slip-in external pocket, and they started lining the internal pocket with a more flexible and thinner dense foam padding. The new padding not only fits the TX-500 better than the first Micro Manager version did, but I believe it will have enough dimension to accommodate the TX-500 battery pack when that’s available next year.
Inside the Micro Manager I also use a Tom Bihn Large Travel Tray to hold all of the TX-500 accessories: key, microphone, ATU, battery, and cables.
I own a number of these large travel trays and highly recommend them. I especially like the ballistic nylon versions for radio kits as they open and close so smoothly.
I made a short video tour of the TX-500 Micro Manager kit before a recent activation at Table Rock:
I’ve used this pack for a number of field activations and couldn’t be more pleased. Looking back at the contents, it’s funny: the pack and almost every single item inside (save the notepad and pencil) are made in the USA while the radio is made in Russia! A bit of international harmony going on here!
If you have a field pack for the TX-500 (or any radio), I’d love to know more about it. Please consider commenting with details or even submitting a guest post with photos!
After completing a successful activation at Fort Dobbs State Historic Site on Wednesday, August 25, 2021, I decided to fit in one more activation that day. I thought about heading out to one of the game lands I hadn’t hit in a while, but frankly, I needed a park a little closer to home due to my time constraints that day, so Lake Norman State Park it was!
Lake Norman State Park (K-2740)
Lake Norman is such an effortless park to activate. Their main picnic area has numerous tables (including two large covered areas), and tall trees providing support for antennas and much needed shade from the NC summer sun!
One thing I had not decided upon was what antenna I’d use at Lake Norman. Earlier, I used my trusty speaker wire antenna at Fort Dobbs, but I like to shake things up. I checked the trunk of my car and found the Chameleon MPAS Lite. Seeing how propagation plummeted after my previous activation, I decided that I wanted a large wire antenna deployed rather than a vertical.
The MPAS Lite can be configured as a wire antenna, of course: instead of attaching the 17′ whip to the “Hybrid Micro” transformer, you attach the 60′ wire that might normally be used as a counterpoise.
Setting it up was quite easy, in fact. I used my arborist throw line to snag a tree branch about 45′ high, then attached the throw line to the floating dielectric ring on the Chameleon wire spool. I stretched the entire length of wire out, attached the end to a tree, then hoisted up the center, forming an inverted vee shape.
Even thought the 50′ coax shield would act as a counterpoise, I really wanted another ground wire attached, so I pulled one of the wires off of my speaker wire antenna and attached it to the grounding post of the MPAS Lite’s stainless spike. I figured a little extra counterpoise wouldn’t hurt.
Although I’d never used the CHA MPAS Lite quite like this, I was pretty confident my Elecraft T1 would find a match. The Chameleon transformer (the Hybrid Micro) brings most any (but not all) lengths of wire within reasonable matching range of an ATU.
I started on 40 meters and found that, without employing the ATU, I had a match that was slightly below 2:1. Not terribly surprising since I had a good 60′ of wire in the tree. Still, I hit the tune button on the T1 and easily achieved a 1:1 match.
I will add here, though, that perfect 1:1 matches are not that important–especially at QRP levels. I’m certain the TX-500 would plug along with a match of 2.5:1 or higher and still radiate perfectly fine. I’ve known hams that truly equate that 1:1 match with an antenna that’s performing efficiently, but that’s not always the case. Keep in mind a dummy load will give you a 1:1 match but is hardly efficient. The ATU’s job isn’t to make the antenna radiate better–it’s to match impedance.
The CHA MPAS Lite will get you within matching range across the HF bands and, many times, it’s close enough that an ATU isn’t really needed.
I started calling CQ POTA on 40 meters and within 28 minutes had logged the ten contacts needed for a valid park activation–all with 5 watts, of course. I was very pleased with these results because, as I had suspected, the bands were still pretty darn rough.
I then moved up to the 30 meter band where I worked a couple of stations and then, for fun, found a match on 80 meters and worked one NC station (possibly on ground wave!).
Here’s a screenshot of my logs from the POTA website:
I must say that I do love using the Discovery TX-500. It’s such a brilliant little field radio. I’m just itching to take it on another SOTA activation soon!
I’m also loving the TX-500 field kit that I built around a Red Oxx Micro Manager pack.
I used the same bag (different color) for my KX2 NPOTA field kit in 2016. It’s such a great size and can even easily hold my arborist throw line along with all of the station accessories and rig, of course. I’ve made a short video showing how I pack it and will upload that video when I have a little bandwidth!
I did make a real-time, no-edit video of my entire Lake Norman activation. Feel free to check it out below or via this YouTube link. No need to worry about ads popping up–my videos have no YouTube ads!
A Brief Public Service Announcement…
If I have a little advice for you this week, it’s this: don’t wait to play radio because someone says you don’t have the right gear for the job.
I received an email this morning from a ham that’s new to field operation and just received an antenna he had ordered. He was upset because a YouTuber claimed his antenna was basically a dummy load. To add insult to injury, he also found a blogger or YouTuber was also highly critical of his recently-acquired Yaesu FT-818. [Note that the FT-817ND–the 818’s predecessor–is one of my favorite field rigs.]
Keep in mind that many of these YouTubers are trying to produce “click bait” videos that will stir up a reaction and, thus, increase their readership numbers which will have a direct and positive impact on their ad revenue. It’s a red flag when someone doesn’t have real-world examples and comparisons proving their points and typically a sign that they’ve never even used the products in question.
I’ve been told antennas I use don’t work, yet I’ve snagged some incredible QRP DX with them. I’ve been told that some radios I use are junk, yet I’ve hundreds of successful field activations with them. And funniest of all are those who tell me that QRP is ineffective and–quoting from an actual message recently–“a complete waste of time.”
My advice is to simply ignore these folks. The proof is in the pudding! Get out there and play radio! In the words of Admiral Farragut, “Damn the torpedoes. Full speed ahead!” 🙂
As always, thank you for reading this field report and a special thanks to those of you who are supporting the site and channel through Patreon and the Coffee Fund. While certainly not a requirement–my content is always free–I really appreciate the support.