Tag Archives: Yaesu FT-818

Antennas, Field Reports, Guest Posts, News, Portable, SOTA

Steve tests the Diamond RHM-8B during a SOTA activation

1 Comment

Testing the Diamond RHM-8B portable screwdriver antenna

By Steve (MW0SAW)

I have seen many amazing K4SWL SPOTA pileups on YouTube using the AX1 antenna and the extension coil. I have fancied trying a small walkie talkie style whip antenna for a while now.

I have a AX1 and KX2, but my Yaesu FT-818 was the radio with a fully charged battery. So I pulled out The Diamond RHM-8B, an antenna I purchased a while ago but never used in the field. It has a BNC fitting and you tune the antenna by sliding the coil up and down for loudest signal and best SWR. They make one very chunky walkie talkie together! Diamond products do have a fantastic air of quality about their construction.

Radio conditions weren’t great, and bands were busy being the weekend of the CQ WW CW contest. So decided to go the my nearest summit that’s amount 12mins in the car and about a 25mins hike up. This was GW/SW-034 Garth Hill. On a clear day you can see out over the Bristol Channel into England, but mist/fog were the order of the day.

I wore the FT-818 and rubber duckie around my neck with the neck strap for a couple of 2m FM contacts, before setting up on 40m SSB sitting on the ground. Without a tablet or chair with me I found it most comfortable to support the radio between my knees.

I was really pleased to get 9 QSOs in the log, some 59 reports, some difficult contacts. Moving on to CW I managed another 8 QSOs with an S2S into Germany.

All the QSOs were UK and mainland Europe, but I was more than happy with the haul for such a small antenna.

So conclusion about the Diamond QRP antenna.

Can you qualify a SOTA summit on a short 1.5m whip antenna? Absolutely, no sweat!

Does it work as well as a full size wire antenna? Of course not. Nowhere close.

However, its makes such a great rapid deploy, ultra packable option with the Yaesu. Not quite as small as a AX1 but you have the bonus of not requiring a tuner. Definitely something for a travel bag if you own a FT-817/818.

Equipment:

Best 73
Steve
MW0SAW/P

Accessories, Digital Modes, FT8, News, QRP

BG6LH Designs a Board for Integrated Yaesu FT-817/818 FT8 Operation

4 Comments

Many thanks to Cao (BG6LH) who writes:

Hi, Thomas!

I would like to share my QRP FT8 kit for Field Operation.

A long time ago, I was seeking the most lightweight QRP kits for FT8 field operation. My goal was to have just one radio, one antenna, one phone, without too many cables, boxes, etc.

Finally, I designed a PCB. It is a Bluetooth DIGI Adapter and can be mounted on the rear panel of my FT-818.

Just plug it to the DATA and ACC jacks. It can be powered by ACC jack’s 13.8V Pin.

It works well with FT8CN, an android FT8 app.

Now, my dream has come true!

My Antenna was a so-called GAWANT, designed by JF1QHZ, I guess it’s a simple Vertical EFHW. I built it with a 1.2 meter rod.

It’s working on 7~28MHz bands, not very efficient, but so small and portable.

For FT8 QRP POTA, field operation, all of these components can be put in a small bag, and deployed in minutes.

I shared my PCB design on Github. If anyone wants to modify it, you are welcome to do so!

https://github.com/BG6LH/FT-81x-BT-DIGI-Adaptor

Thank you for sharing this, Cao. This is absolutely amazing and an incredibly clever design! I suspect a lot of FT-818/817 enthusiasts will make this same build via your design!

Thank you for reaching out and for sharing your work with the QRP community! 

CW, Field Reports, Guest Posts, News, Portable, POTA, QRP, Travel

Matt’s Summer Vacation Mountain POTA

9 Comments

Many thanks to Matt (W6CSN) who shares the following post  from his blog at W6CSN.Blog:

Summer Vacation Mountain POTA

by Matt (W6CSN)

Our family regularly enjoys a summer vacation in the mountains. There is no shortage of mountains along the Pacific Coast, but if you refer to “The Mountains” around our house everybody knows you are talking about 5500 feet up the western slopes of the Sierra Nevada along Highway 4 near the town of Arnold.

Summer Cabin

Last year’s trip to “the mountains” was my first foray into portable QRP operating and I successfully hunted a few Parks On The Air stations. In the year since, I’ve become much more involved with (some would say addicted to) POTA, especially as an activator.

The cabin sits on a small lake.

For the “base” operation of hunting other stations, I set up the FT-818 with an EFHW strung between the deck and some trees adjacent the nearby lake. The 26 ga polystealth wire antenna literally disappeared into the trees, the only giveaways being the 64:1 transformer floating in space off the deck rail and, more likely, the the bright orange arborist line used for the downhaul at the far end.

I made a few hunter QSOs during the morning hours from the cabin, but this location wasn’t hearing particularly well. Signals weren’t strong and I sent more than a few 229 reports. However, this “hunter mode”operation was secondary to my main objective of activating some new to me parks while on this trip.

Hunter QSOs from the cabin

On the first full day in the mountains we headed back down the hill a ways to visit Railtown State Historic Park in Jamestown, CA. After riding the excursion train and enjoying lunch by the roundhouse, I brought up the possibility of an activation. However, with the July heat well into the triple digits, the family wasn’t in the mood for dads radio obsession. Quite frankly, I wasn’t too excited about setting up the station in the heat, so it was an easy choice to put this one off for another time.

No activation attempt at Railtown this time

The next POTA activation opportunity came when we had made plans to head up for a day at Lake Alpine. We chose to go up to the lake around 10AM on Monday, hoping for smaller crowds. Also, we had plans to visit Calaveras Big Trees SP the following day.

This gave me an idea: I could make the short drive from the cabin up to Calaveras Big Trees (K-1134) in the morning while everyone was sleeping in and try to get the activation done before heading to Lake Alpine. This way the family visit to Big Trees wouldn’t be interrupted by dad playing radio. Continue reading Matt’s Summer Vacation Mountain POTA →

News, Portable, QRP, QRP Radios, Surveys, Travel

Survey #3 Results: What QRP HF transceiver would you or do you choose for air travel?

17 Comments

This past week, I posted the third of several surveys on QRPer.com, this time asking:

“What QRP HF transceiver would you or do you choose for air travel?”

I turned off the survey at 6:30 EDT today, with a total of 475 responses.

Survey Results

Here’s a pie chart showing the top 18 results in the survey. To see detail, you will need to click on the image below (or click this link) to enlarge it in a new window:

The top choice was the Elecraft KX2 which accounted for 22.9% of the votes.

It’s funny: I had assumed the Icom IC-705 might take first place in this survey. Then I realized that I own both the KX2 and IC-705 and, this summer, I chose the KX2 each time I traveled. Indeed, I can’t think of a time in recent memory that I didn’t take the KX2 with me during travels.

The reason I picked the KX2 each time is because it’s such a comprehensive HF radio with a superb built-in ATU and battery pack. There’s no field situation I can throw at it that it can’t handle. In fact, if a site doesn’t allow any antennas on the ground, I can even pair it with my AX1 or AX2 tabletop antennas.

I see why so many of you picked it as your first choice.

Your second choice was the Icom IC-705 which accounted for 14.3% of the votes.

The IC-705 has one very cool feature for travel: you can charge it with a common Micro USB charger!

No need to take a separate power supply, battery pack, or custom charger. Simply bring a Micro USB cable and plug it into the hotel USB charger, your phone’s charger, or even a Lithium power pack. If you’re happy with 5 watts of output power, you really need no other battery, power supply, or charger.

Of course, the IC-705 is compact, sports the entire HF band, VHF, and UHF and is multimode. It can also receive FM and AM broadcasts along with weather radio, and the AIR band.

You can even do D-Star natively and allow the GPS in the IC-705 to find the closest repeaters and load them to memory.

The IC-705 is a very savvy travel transceiver!

Your third choice was the Yaesu FT-817/818 which accounted for 9.9% of the votes.

At first, I was a little surprised the FT-817/818 would gather more votes than, say, the Elecraft KX3, but then again it’s actually a very compact radio. I remember when I used to travel Europe for a living, I would tuck my FT-817 into my carry-on and I hardly noticed it was there.

It also ships with a NiMH battery pack, and you can also buy a much longer-life and faster-charging Li-Ion pack.

The FT-817/818 is a rugged radio. You don’t have to worry about it being harmed in a pack and it lays pretty flat as well so it’s easy to protect and pad among your clothes.

The Elecraft KX3 took forth place with 8.6% of the votes.

The KX3 is one of the highest-performance field radios ever made and it is incredibly portable.

I added the Side KX panels to my KX3 many years ago. With those installed and using the Lexan cover, it’s a very rugged radio. Simply toss it on your flight bag and you’re good to go!

The KX3 is also a very efficient radio, so you could easily power it with, say, a $25 Talentcell USB battery pack–one that TSA wouldn’t blink at.

I’ve traveled pretty extensively with my KX3 so I see why it ranks so high on the list. Like its newer sibling, the KX2, it has an amazing internal ATU. You can also load the KX3 with AA cells for short on-the-air sessions or longer listening sessions.

Fifth on this list of travel radios is the Xiegu X6100 which accounted for 6.1% of the votes.

No doubt, what makes the X6100 so appealing is that, like the KX2, it’s a proper shack-in-a-box. Indeed, I would also add the X5105 to this same list.

The X6100 contains a high-capacity rechargeable internal battery pack and an excellent ATU. It’s an all-in-one radio solution that’s actually quite rugged and could easily handle the bumps and jolts of air travel.

Notable mention…

There was another winner in this survey. It wasn’t any one model, but rather a whole class of HF transceivers: super compact portable transceivers. If lumped together as a category, these would have placed in the top five.

I’m talking about radios like the: Mountain Topper series, QCX-Mini, QMX, QDX, SW-3B, (tr)uSDX, TR-25, TR-35, and similar. These radios are so incredibly tiny that they can be packed away in a very compact pouch.

Indeed, I have a complete dedicated POTA/SOTA station built around my Venus SW-3B (see photo above). It’s all contained in a small BROG headrest pouch that I could easily toss in a travel bag.

These pint-sized radios aren’t general coverage radios like the top 5 listed above, and many are CW-only. Still: if your goal is to hit the field a bit during your vacation, they’re incredibly effective.

This radio class also represents some of the most efficient and affordable transceivers on the market.

Full Results…

If you would like to see the actual number of votes for each of the 48 radios in this survey, click the link below to load the rest of the page:

  • Elecraft KX2: 109 votes
  • Icom IC-705: 69 votes
  • Yaesu FT-817 or FT-818: 47 votes
  • Elecraft KX3: 41 votes
  • Xiegu X6100: 29 votes
  • lab599 Discovery TX-500: 27 votes
  • Xiegu G90: 20 votes
  • (tr)uSDX: 15 votes
  • Elecraft K2: 11 votes
  • Penntek TR-35: 10 votes
  • FX-4C, FX-4CR or FX-4L: 9 votes
  • Venus SW-3B: 9 votes
  • Elecraft KX1: 8 votes
  • Mountain Topper MTR-3 series: 8 votes
  • QRP Labs QCX-Mini: 8 votes
  • The following received less than 7 votes
    • Icom IC-703
    • Mountain Topper MTR-4 series
    • Xiegu X5105
    • QRP Labs QCX
    • QRP Labs QDX
    • uBITX transceiver (any model)
    • Xiegu G106
    • Elecraft K1
    • Pentek TR-45L
    • Hendricks PFR 3 series
    • YouKits or Ten-Tec Branded 2-4 band CW QRP Transceiver
    • Flex Radio Flex 1500
    • M0NKA mcHF
    • Penntek TR-25
    • Xiegu G1M
    • Hamqrpkits EGV+
    • Expert Electronics SunSDR2 QRP
    • Hermes-Lite 2
    • DSW-20
    • QRP-Labs QMX

More QRP radio surveys on the way!

What did you think about these results? Was your choice in the top five? Feel free to comment!

Also, stay tuned as I have quite a few QRP radio survey questions in the works.

I’ve tagged all of these reviews so they’re easy to browse, just bookmark or note: QRP Radio Survey Series.

News, QRP Radios

Jens shares current, voltage, and power comparisons between the IC-705 and FT-818

8 Comments

Many thanks to Jens (DJ2GMS) who recently reached out to share results from some very simple tests he performed on the Icom IC-705 and Yaesu FT-818. Jens writes: 

A comparison of the Yaesu FT-818 and the Icom IC-705 (no comments, just facts):

On ext. 10,1V the FT-818 only needs 32 mA more than the IC-705

IC-705 (342 mA):

FT-818 (374 mA):

Min ext. voltage for TX of the IC-705 is 10,1V (appr. 1,8 Watts)

With 10,1V the FT-818 delivers 5 Watts

Minimum ext. voltage for TX of the FT-818 is 8V (appr. 3,5 Watts)

Thanks for sharing this, Jens!

Articles, News, Portable, QRP Radios

Confession time: I bought a brand new Yaesu FT-818ND

37 Comments

I know what you’re thinking:

“But Thomas, don’t you already have two FT-817NDs–?!”

Why yes, I do!

Before you label me as a hopeless radio addict (I am, but let’s shelve that for a moment),  let me explain myself…

First off, why two FT-817s?

If you’ve been a reader for very long, you’ll already know that I’m a huge fan of the FT-817/818.

I won’t go into the reasons here because I published a very long-format article on this topic last year.

Suffice it to say: I believe the FT-817/818 an effective, durable, versatile, and frequency agile multimode radio.

I purchased my second FT-817ND because:

  1. I wanted it for full-duplex satellite work (funny: many satellite enthusiasts call a pair of 817s the “Yaesu FT-1634”)
  2. The unit I purchased was like-new with all original accessories and side rails for $350 shipped.

Although my first FT-817ND has a Collins narrow CW filter installed, I decided to build one for this second unit as well. That way, I could grab either radio on the way out the door to activate a park or summit.

So why the new FT-818ND?

It was always my plan to eventually replace out one of my FT-817NDs with an FT-818ND. Here are the reasons:

  1. I was having difficulty finding a TXCO. The  FT-818ND has a TCXO-9 high-stability oscillator built-in.
  2. I wanted one of my two radios to be a late model.

I had planned to buy a Yaesu FT-818ND sometime in 2023. Possibly at the 2023 Hamvention.

When Gavin (GM0WDD) informed me that Yaesu was discontinuing the FT-818ND on December 28, 2022–only moments after the announcement was made–I immediately hopped over to DX Engineering and purchased one. I realized that the remaining inventory of new radios would be depleted in short order and I was right. By the following day, all major US retailers were out of stock.

Are FT-818ND prices going to soar?

No. I don’t think so.

The FT-817 and FT-818 have been on the market since 2001. In that time, Yaesu has sold bazillions of them. Seriously. These pop up in the classifieds and at hamfests all the time because there are so many floating around out there in the wild.

The FT-818/817 is sort of the opposite of a rare, limited-production-run radio. If you’re looking for a used ‘818, I think you’ll find that the prices are relatively stable.

I would discourage you from paying a premium for an FT-818ND.

Next steps with my ‘818ND

I am going to set this unit up for POTA and SOTA activations; it can do double duty for satellite work.

I’ll remove the Portable Zero side rails from one of my other 817s and attach them to the FT-818.

I initially planned to yank the narrow CW filter out of my 2nd Yaesu FT-817, but that just seemed cruel. If/when I sell that radio, I would like to give the buyer a narrow CW filter option.

I decided, instead, to order a Collins filter from Japan and filter board from Artur in Poland and build yet another 500Hz filter.

I also purchased RT System’s programming software and cable for the FT-817/818. I’ve adopted RT systems for all of my other VHF/UHF radios, so it’ll be easy to load, change, and clone all of the frequency memories. I’ll be nice having both SOTA calling frequencies and repeaters pre-loaded on my radios.

I’ve thought about actually making a no-edit video of building/installing the CW filter and side rails.

Speaking of videos about building a narrow CW filter, though, check out this one Jonathan (KM4CFT) published only recently.

Zero buyer’s remorse

While the announcement by Yaesu may have prompted me to pull the ‘818 trigger a few months early, I have no regrets whatsoever.

The only challenge I’m going to face down the road is trying to sell the “extra” FT-817ND.

Then again, I’ve thought about keeping the third one decked out in the TPA-817 pack frame (see photo above) and lending it out to local POTA/SOTA newbies who want to test out the healing waters of QRP.

Articles, News, Portable, POTA, QRP, QRP Radios, Reviews, SOTA

The enduring Yaesu FT-817 and FT-818 series transceivers

54 Comments

The following article originally appeared in the October 2022 issue of The Spectrum Monitor magazine:

The enduring Yaesu FT-817 and FT-818 series transceivers

by Thomas (K4SWL)

Last April, our family went on a camping trip at New River State Park in Ashe County, North Carolina; we had an absolutely brilliant time.

Naturally, as with any camping trip or extended travel, I’d put a lot of thought into choosing the portable transceiver and field kit to take along.

The great thing about camping at a state park is that I can “activate” that park via the “Parks On The Air” (POTA) or “Worldwide Flora and Fauna” (WWFF) programs pretty much anytime: early morning, late afternoon, or even in a late shift well into the night. Or, of course, all of the above.  Since my activation site is also where I’m eating and sleeping, my radio usually gets heavy use.

Before leaving on that April camping trip, I knew what radio I wanted to operate the bulk of the time: my Yaesu FT-817ND. For a lot of reasons which  I’ll delve into later, I think the FT-817ND (or its latest iteration, the FT-818ND) is an amazing QRP field radio.

Despite unstable propagation and a little campground QRM that moved in over the weekend––no doubt from a neighboring RV, chock full of noisy switching power supplies––I found the FT-817ND activation to be a most enjoyable experience. I posted a few field reports and activation videos from my New River activations on QRPer.com. 

The thing is, each time I publish a field report using the FT-817ND, I receive a string of questions from subscribers and readers. Questions such as…

  • Should I buy a new FT-818 or a used FT-817?
  • Why do you like the FT-817ND so much?
  • What’s the difference between the 817 and 818?
  • How does the FT-817/818 compare with _____ radio?

Most queries, however, are a version of this comment from reader David:

“We have such a wide array of QRP rigs available to us these days, I’m curious what brings you back to the Yaesu for activations? It’s bigger than our more modern radios, with no ATU and more current draw.   I’m just wondering if there is something that you find it does particularly well, or if it’s just ‘because I like to use it,’ which to me is an entirely valid reason, too! My 897 served me well, as does my 891; I’ve had Yaesu handhelds forever, so I’m certainly a fan. I don’t own an 817/8 but they have a devoted following so I just wanted to get your perspective on it.”

Or as another subscriber distilled the question:

“Why choose a legacy design like the 817/818 when newer QRP transceivers have better overall field specs and features?”

Of course, these types of questions are simple enough when it comes to asking, but when it comes to answering, much more complex.

Of course, as I said in my recent TSM article about choosing a field radio, one’s love of a particular radio is by definition quite subjective, and this certainly applies to my response…we all have our own personal preferences.  But behind these preferences are objective facts, such as product’s unique features, specifications, and form factor; let’s take a look at these.

Continue reading The enduring Yaesu FT-817 and FT-818 series transceivers →

Accessories, Articles, CW, Hacks and Hints, How To, News

How to assemble a narrow CW filter for your Yaesu FT-817/FT-818/FT-857/FT-897 (an affordable YF-122C equivalent)

30 Comments

QRPer.com readers know that I’m a big fan of the venerable Yaesu FT-817 and FT-818 series transceiver.  So much so, I own two FT-817NDs–I purchased a second unit last year primarily for full duplex satellite work.

As I mentioned in a previous post, the one gotcha with the FT-817 and FT-818 is narrow CW filter availability. The YF-122C 500 Hz and YF-122CF 300 Hz Collins filter boards are no longer produced. Neither are the Inrad equivalents.

With the renaissance of CW we’re experiencing along with the growth of POTA, WWFF and SOTA, narrow CW filters for the FT-817/818 are very difficult to find and come at a premium when you do find them. I saw one sell recently for $250 US–over double what I paid two years ago.

In addition, this same filter not only fits the FT-817/818, but I believe it also fits the popular FT-857 and FT-897 series transceivers (please correct me if I’m wrong about this).

The Problem: I wanted another narrow CW filter

One of my FT-817NDs is loaded with a Collins 500 Hz mechanical filter that I purchased from my buddy Steve (WG0AT) nearly two years ago.

The second FT-817ND had a narrow Inrad 2 kHz SSB filter that came with the radio when I purchased it used (see image above).  Initially, I had no intention of buying yet another narrow CW filter because I’d only planned to use the second unit for FM and SSB satellite work.

Then, during field day this year, I decided it might be fun to build a quick-to-deploy portable HF station with something like an Armoloq TPA-817 pack frame. That thought experiment made me realize that I should simply bite the bullet and get a narrow CW filter for the second FT-817ND.

I started searching in late June and was simply not willing to pay the price for the very few filters that have shown up on the the used market.

The Solution? Assemble one!

I owe QRPer reader, Petr (OK1RP), for this tip.  Thank you, Petr!

The process of assembling your own narrow filter is actually quite simple and affordable. If you have even the most basic soldering skills, you’ll be able to manage this easy project. If interested, keep reading and I’ll show you how you can assemble your own…

Continue reading How to assemble a narrow CW filter for your Yaesu FT-817/FT-818/FT-857/FT-897 (an affordable YF-122C equivalent) →

CW, News, QRP Radios

The Yaesu FT-817/FT-818 and narrow filter availability

38 Comments

IMPORTANT UPDATE:

After this article was originally posted, I discovered a very easy way to assemble your own narrow CW filter. Click on this link to read a post that describes, in detail, how you too can build a replacement Collins narrow CW filter for the FT-817/818 series radios (plus other similar Yaesu models). 

What follows is the original article:

So I’m a big fan of the Yaesu FT-817/818 series radios. This general coverage QRP radio has had a longer market run than any other transceiver I can think of and for good reason.

While the 817/818 lacks some of the advanced features of more modern field rigs and have no internal tuner, it makes up for it by:

  • sporting multi-mode HF, VHF, and UHF coverage,
  • having two selectable antenna options (a front panel BNC and back panel SO-239),
  • being incredible durable/rugged,
  • featuring excellent QSK (albeit with a bit of relay clicking…which I actually like),
  • and  generally being very affordable (prices typically from $400 used to $650 new).

In addition, they tend to hold up well with time.

For the price? I feel like you get a lot of radio with the FT-817/818.

This is the reason why I often recommend the FT-817ND and FT-818ND if it sounds like a good match for the operator.

One gotcha though…

I’m starting to realize that there is one downside to this rig especially if you’re primarily a CW operator: optional narrow filter availability. Continue reading The Yaesu FT-817/FT-818 and narrow filter availability →

Antenna Tuners, Antennas, Field Radio Kits, Grab And Go, Portable, Portable Power

Brent’s updated review of the CQHam TB Box

8 Comments

Many thanks to Brent (VA3YG) who writes:

Hi Thomas, hope you’re well.

Just a short message to bring you up to date on the performance of the new equipment.

In a nutshell, it’s brought me back to my old faithful friend, the FT-817. I bought my FT-817 20 years ago and it’s served me flawlessly all these years. It’s not the best at everything but it’s a perfect QRP shack-in-the-box.

The TB Box makes the little Yaesu a pleasure to use. The tuner tunes my 43’ vertical and K6ARK end fed random wire from 80-10 for the vertical and 40-10 for the ef random wire.

The battery tray slips out to reveal 6 Panasonic 18650 cells. The battery life is exceptional even with the 817 set on 5 watts. I’m just now in the process of topping the batteries up.

Attached are a couple pics of my operating situation today….it was such a nice day out on the driveway. I have a telescopic pole attached to the RV and strung the 41’ of wire up. Also, a closeup of the battery tray and one of the cells.

I can whole heartedly recommend this piece of gear to supplement an FT-817/FT-817ND/FT-818ND.

Loving it!

72/73,
Brent VA3YG

Very cool! Thank you for sharing the update, Brent! I’ll admit that I like the “old school” simplicity of this power and trans match system.

Click here to check out the CQHam TB Box on eBay. (partner link)