Thoughts for HF/VHF Truck/SUV mobile operation


The LDG RT-11 from LDG Electronics seems to be the best value.


For mounting a whip antenna, split ball mount behind the drivers side of the cab, on the cab. Watch the height of this location. In the US, max legal height is 13ft 6in for most places.

My experience with springs is that they are more trouble than they are worth. (I’ve tried lots of ’em.)

Definitely go with a quick disconnect for the antenna mount. Not all QD’s are created equal. I like the one’s I’ve been buying from wb0w.

Also, not all split balls are created equal. You will want something like one of the Hustler heavy duty models. You can get ’em with either UHF or terminal connections on the back side of the ball. Another nice feature of these is that the plastic insulator has a crown of sorts on it, that helps to keep the mount from rotating.

An alternate mounting location and much stronger, would be to get a sheet of metal, cut it off into a triangle and mount it near the corner of the bed. This mounting location would be sturdy enough to support the biggest of antennas.

In any mounting location, make sure you have a good ground. I use a dremel tool with grinding bit to get to bare metal.


Screw driver will work great and be expensive, but you won’t need the tuner.

You could use a CB whip as an ultimate compromise vertical.

If you get a set of “hamstick” type antennas with QD connectors you can use each one +/- 1 band. Use 15M on 17M and 12M w/tuner.

Or you could home brew a vertical solution for ~$35. My HB antenna lets me do 2/6M or any band 10M-30M while mobile. I can do 80M stationary with the addition of a ~40’ wire. I am working on a solution for 40M mobile.

Btw, I hope you had the RF filter installed in the fuel pump.

If you couldn’t tell, I love mobiling.

Also, if you give it some advance thought you could configure things so that you could easily transition it all to a back pack with battery, counterpoise wires, spare coax, etc.
Here is where the LDG Z11 and whips with QD connectors have an advantage.

73 DE Bryan, k0emt

Tips for new FT-817 owner

2021 update

Yahoo groups are a thing of the past. Look for a group or a FaceBook group.

Also, we’ve gone from the 817, to the 817ND, and now the 818.


W4RT has long since gone out of business and the filters and compressors are no longer available.

Crystal filters are pretty much impossible to obtain for CW.

SOTABeams sells a digital filter that someone with advanced building/soldering skills can add into the rig. They also have an external version.

SOTABeams also sells an external speach compressor that is plugged inline with the microphone.


The 817 series has finals that are sensitive to high SWR and leaving batteries in them on the shelf. I recall reading something about how the finals stage was still getting power to it even when turned off (soft switch).

Check your output. Odds are that you will at some point in time join the blown finals club. Luckily, the 818 finals board works throughout the 817 series and is available from Yaesu. Fortunately, it is not an overly expensive part.

Internal Battery

Just skip on the internal batteries. If you insist, know that not all AA NiMh are the same. Look for those with a capacity over 2400mAh. The 817 series is a power pig and won’t last very long on 1500mAh batteries.

Check the 3D printing sites. There are some options for getting a 3S 18650 internal battery set up. WindCamp also sells some options on eBay

External Battery

Print, make, or buy a Yaesu DC connector to Anderson Power Pole adapter that secures to the back of the radio.

I personally acquired a Bioenno 3Ah battery and charger.


Visit PortableZero products. They have battery cases that include a nice one for the 3Ah Bioenno. It also mates well with the 817 series. PortableZero also makes a bracket/bail combo that protects the front of the 817 series. The bail feature nicely positions the display and controls for field ops.


I typically used this with a wire antenna and tuner. Otherwise, a commercial buddistick.


I built and use an Elecraft T1 with the 817. Add the control cable for some automated band switching. Not an inexpensive setup, but compact and very functional.

Linear Amplifier

Check out PCBHobby and their HardRock 50 for a kit to build a 160m-6m 50-60w amplifier. There are options for an internal tuner and QSK operation. The 817 can be interfaced to the HR50 for band switching.

OLD and mostly obsolete information

You should join and research in the ft817 yahoo group.
(NOT to be confused with the ft-817 group.) READ THE FAQ!

Also, check out

A CW filter is a must. You may want to consider the dual filter from w4rt. The w4rt is the only one giving you both a narrow ssb and narrow cw filter.

Do a google search on w3ff and buddipole for both commercial and home brew versions of this portable multi-band dipole.

DON’T buy an ATX antenna. Probably better off to avoid the maldol whips as well. The miracle whip sucks. If buying a commercial dummy load, check out the super antennas MP-1. Any of the HF antennas will need a good counterpoise. Elevating the wire is better too.

Consider a 7aH gel cell and some fused power-pole leads for when want to work more than an hour or so.

If you want a linear check out the Tokyo Hy-Power HL50 80M-6M. Order from the factory, they’ll adjust for 5w drive, 50-60W out.

For auto-tuner consider LDG Z11. For manual tuner ZM-2 or other.

FT-817 Commander is good free software for programming/control/digital modes.

Drop me a line with any questions.

72 de Bryan - k0emt

Yaesu FT-817 QRP Portable Station

This is an index to pictures of the Ambico bag model V-4420ASST. I use it for transporting my Yaesu FT-817 along with antennas and other accessories.
This bag is padded, has lots of zippered compartments and has a life-time warranty. I purchased it for less than $20 at Wal-Mart.

Since taking these pictures I have started using a Super Antennas 3/8"-24TPI mounting bracket. With this bracket on, the bag will NOT zip shut.

If you use the long whip and modified RS 11M back of set antenna, they can protrude from the same opening.

With everything that I stuff into the bag, including two extra sets of AA batteries, the bag weighs in at 10lbs.

June 2002

I have switched to UG-174 coax for quite a bit of weight and bulk savings. However, I do prefer the RG-58 when doing VHF+ weak signal stuff.

Also, Sears, a US department store, was clearing out some 35mm camera bags. I picked up one for $3 that a 7Ah SLA snugly fits into.
I put a fused pig tail on it with Anderson Power Poles. In the little front pouch I put the 817 barrel connector and PP pig tail and some spare fuses.
I threw in a couple higher rated fuses in case it needs to be used on another rig.

Pictures of the bag and contents: