CW Filter for my FT-857D

Last year I decided that I wanted to learn and use CW. To that end, I enrolled and completed the CW Academy Level 1 class with the CW Ops group ( I have 2 CW QSO’s under my belt and I need to get on the air and make some more. Ion preparation for that, I decided to get the 500Hz CW Filter to add to my FT-857D. The radio has two slots for optional filters. Looking online, it seems the filters for the FT-857D are getting harder to find. I found one on INRAD’s web site and ordered one. It came a few days later and sat on my desk for a couple days. being Saturday and getting some things done, I decided to install it. I found it’s really very easy to install this filter.

To start with, there are 7 screws that hold on the top cover of the radio. 2 on each side and 3 on the top. The labels are simply my way of remember where things go in the back of the radio while it’s in my portable rack.

After removing the cover the locations for the filters are in the back left corner, as shown in the lower left portion of the photo below.

An up close look.

The filter is pretty easy to orient. There are 3 pins on one and and 4 on the other so it’s hard to get it backwards. There was also a reminder from INRAD that the circuit board went down and the label faces up. Here is after the installation which is simply pressed in.

After the installation, I wanted to make sure it was recognized by the radio so I powered it in and looked at the filter menu option and the 500Hz filter showed up as option B.

Now all I have to do is get on the air! When I do that, I will try to remember to make a video demonstrating how the filter affects reception of CW signals.

If you have a FT-857(D) and would like a CW filter for it, you might put this project on your list. I can imagine a day when these filters are really hard to find!


Wayne Patton, K5UNX, is a regular contributor to and writes from Arkansas, USA. Contact him at [email protected].

Amateur Radio Weekly – Issue 141

To help with your NPOTA withdrawal
Like NPOTA, WWFF was devised in order to get Amateur Radio ops off their duffs and into the Great Outdoors. I love their catch phrase – “Make nature your shack!”

BY70-1 Satellite camera operating guide
An open telecommand is designed to allow radio amateurs to send commands to take and download an image.

Today: KB6NU streaming General Class course
The classes are going to run from 10 am – noon, and will probably run through the end of March.

80m doublet antenna
Technically, what I have is almost an 80m Doublet – there’s about 18m of wire on each “leg” and I’ve about 20ft of 300-ohm slotted feeder which comes into the Shack and through an FT240-31 choke and then about 30cm of coax to the back of the MFJ-847 tuner.

Accomplished my first DMR QSO today with K5IMO (thank you Larry!) on the TG3184 TalkGroup for the State of Texas.

Propagation prediction tool
Area coverage maps and point-to-point HF propagation predictions.

Mystery cosmic radio bursts pinpointed
As the name suggests, Fast Radio Bursts (FRBs) are short-lived – but powerful – pulses of radio waves from the cosmos.

Automatically recognising digital modes with machine learning
There is a good prospect of using machine learning image recognition for guessing digital modes. Ideally this would be built in to clients but it might make a good app (using the phone camera to capture the unidentified signal) or a web site where you upload a screen shot.
marxy’s musing on technology

Shortwave Pirate Radio 2016 – A Year In Review
Overall, 2016 was another great year for shortwave pirate radio listeners.

The missing Q signals
Some Q signals have never made it to the ARRL’s official list.


New FM transponder satellite BY70-1
2E0ICL works 2E0SQL via a new amateur radio FM satellite, BY70-1, launched into orbit on 28 December 2016.

How to install powerpole connectors
I introduce you to Anderson Powerpole connectors and how to solder and crimp the connector pins. This connector has become a standard among Amateur Radio operators.

Contact via UHF ISS Digipeater
For this video I recorded the audio from my Kenwood TH-D72a and later played it back to Soundmodem+UISS. Soundmodem decodes many more packets than my radio does. I made a screen capture of UISS and its map so you can see the complete details of every received packet.

Maclogger DX walk-through
Is there a Mac in your Shack? This time I’m looking at the Maclogger DX logging software and rig control for the Mac platform.

Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at

2017 North America SOTA Events

Here’s your handy list of North American Summits On The Air (SOTA) activities for 2017, as supplied by Guy N7UN:

The post 2017 North America SOTA Events appeared first on The KØNR Radio Site.

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

David’s Time Machine

A quick read of the latest postings on the excellent "The RadioBoard Forums" revealed a recent donation, by RadioBoard regular Graeme Zimmer, of his extensive collection of scanned vintage radio books to The American Radio History website. For those not familiar with this site, it is a superb and extensive archive of radio-related magazines and publications developed and maintained by the very dedicated David Gleason. There are probably very few radio or electronic magazines of the past that you could name that won't be found on David's website.

Graeme's donation was extensive enough to garner its own page listing and many of the book titles will ring-nostalgic to a lot of us baby-boomers that were grabbed by the magic of radio while still in our formative years.

I was delighted to see one particular author's name in the list of publications, Alfred P. Morgan ... a name that many of you might recall with fond memories. I remember checking out many of his 'Radio For Boys' series of books from the top-floor school library when still in elementary school. I longed to construct some of the simple radios but at the time I was really too young to gather the needed resources and components to put something together. I had yet to develop any of the needed skills, other than the yearning desire to learn as much as I could about these complex-looking one-tube receivers ... but it was already too late I think, and like thousands of other young 'radio boys', Alfred Morgan had planted the seed that continues to flourish some sixty years later. Thanks to Zimmer's donation of over 100 different titles from various authors, many of those hypnotic publications can now be found on David Gleason's amazing time machine!


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

CQRLog CAT control for FT-857D

My last post, I talked about getting Linux setup for my new ham laptop. This is a short post to cover another small step in that process.

Tonight I was working on getting Rig Control working for my FT-857D and CQRLog on Linux. A lot of times, when I read posts like this, or watch youtube videos, people ignore the hardware side and just focus on the software side of things. I am going to try and cover both.

The hardware setup is simple. I am using the programing cable (CT-62B cable) that came with my RT Systems software to connect the CAT port of the FT-857D to a USB port on the laptop.  Windows will see this cable a COM port, in my case, COM3 when I booted to Windows.

I found I had to install a couple things in Linux in order to get this working properly. When I intalled CQRLog, hamlib was installed along with it. I also had to install a package called libftdi1. When I look at the output of “dmesg” I see that the CT-62B cable shows up as ttyUSB0 which is the name of the serial port in Linux that I am going to use to communicate with the radio.

In CQRLog I set the following:

  • RIG Model = 122 FT-857
  • Device = /dev/ttyUSB0
  • Serial Speed = 4800 (This is what the radio is set to)
  • Check the box for “Run rigctld when program starts”

Everything else on the TRX control setup in CQRLog is set as default and not changed from the installed values.

One last Linux setting, in the /etc/group file, I had to add my user name to the “dialout” group. This can be done with the command usermod from a terminal. In openSUSE which is what I am running, I ran the command “usermod -G dialout k5unx”. I then logged out and back in and started up CRLog. When I opened the TRX control window the frequency matched what was one the radio and when I spun the radio dial, CQRLog changed with it.

More to come as I get up and running with Linux on my ham radio laptop. 

Wayne Patton, K5UNX, is a regular contributor to and writes from Arkansas, USA. Contact him at [email protected].

Powering the K-Pod via its RJ12 cable.

The 2 resistor through hole and SMT
 Once I received my K-Pod I wanted to get it up and operating to see how it worked. One of the things that had to be done was to power up the K-Pod. This can be done one of two ways either via a separate power cable or with a small mod to the Elecraft K3 you can power the K-pod with the RJ12 inter connecting cable. The fasted way at the time was to power it via my power supply. In time I would do the mode so only one small cable would run between the Elecraft  K3 and the K-pod.......Well that time had come and the mod was to be done.  Elecraft gave you a choice of resistors
Front panel removed 
for the mod, an SMT as mentioned already or a through hole resistor. I chose the SMT as the leads from the though hole resistor had to be maneuvered around other SMT resistors. This method seemed to be asking for a short to a neighbouring SMT. It was time to replace a small (and I mean small) SMT resistor in my Elecraft K3. The resistor is supplied by Elecraft along with very detailed
Now that is small!!
instructions. The first step was to remove the front control board from the K3, this would get me access to the area the SMT  resistor was to be installed. With the front panel off and in front of me my next step was to identify R82 in the lower left corner. I located the resistor and the job on a scale of 1-10  was about a 7 for me. So It was now time to heat up the Weller soldering station and get to work. Now having said that I do want to make it clear that I am never really thrilled about placing a soldering iron anywhere close to my rig! Elecraft does offer there services for this if you want to ship them your radio......BUT.....I have done other modes to the Elecraft K3 in the past and without issue. Fortunately the old SMT resistor did not have to be removed, the new one could be mounted on top of it. After some very deep breaths the deed was done and it was time for the smoke test! With the K-pod connected to the K3 I powered up the radio and low and behold the K-pod was alive and well. 
The deed was done not pretty but it works fine. 

Mike Weir, VE3WDM, is a regular contributor to and writes from Ontario, Canada. Contact him at [email protected].

To help with your NPOTA withdrawal

There IS a Parks On The Air program that has been up and running for a while.  In the USA, POTA is part of the World Wide Flora and Fauna program, which is international in scope.  Like NPOTA, WWFF was devised in order to get Amateur Radio ops off their duffs and into the Great Outdoors. I love their catch phrase - "Make nature your shack!"

POTA is the United States arm of WWFF and POTA encompasses not only NPOTA, but State Parks as well.  So if NPOTA was difficult for you as an activator, POTA should be easier as it will include many places that were not part of POTA.

Take for instance, the Great Swamp Wildlife Refuge (KFF-0454)  here in NJ.  I drive through it every time I go up to HP28, Morristown National Historical Park (KFF-0746), which is part of NPOTA.  Since the Refuge is administered by the US Fish and Wildlife Service, it was not part of NPOTA - but it IS part of POTA. My favorite portable operating spot, Washington Rock State Park, is also part of POTA (KFF-1635).

Activation requirements for WWFF are a bit stricter. For a valid activation, WWFF requires 44 QSOs, while NPOTA required only 10.  Happily, according to my good friend Greg N4KGL, POTA also requires only 10 QSOs for a valid activation. A good day's worth of portable operations should cover you. If you're bound and determined to work towards Activator awards, then you have a good program here to fill your heart's desire.. Me? I'll just be happy to have the "excuse" to go out and put some NJ parks on the air.

I've only just registered and have not looked into all the details about how to upload logs and stuff; but I am bound and determined to put some parks in New Jersey on the air this coming Spring and Summer for the chasers that are really into this.

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

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

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