PA3CLQ's Leuke Linken Nr. 444


Beste mede amateur,

Dear fellow amateur,
In deze mail staat een link waarop het zevenentwintigste DKARS-Magazine is te downloaden.

This mail contains a link which the 27th- DKARS-Magazine is available for download.
De Dutch Kingdom Amateur Radio Society is een stichting die de belangen wenst te behartigen van ALLE radioamateurs binnen het gehele Koninkrijk der Nederlanden.

The Kingdom Dutch Amateur Radio Society is an organization that seeks to represent the interests of ALL radio amateurs throughout the Kingdom of the Netherlands.

De DKARS doet niet aan copyright en het staat een ieder vrij om deze link aan zoveel mogelijk radiovrienden door te sturen.
The DKARS does not copyrighted and any person shall be free to forward this link to as many radio friends.

DKARS Magazine verschijnt 1x per maand en wij stellen het uiteraard op prijs als je ook (radio amateur gerelateerde) bijdrages wilt leveren.
DKARS Magazine appears 1x per month and we obviously appreciate it if you (related radio amateur) to provide contributions.
Namens de Dutch Kingdom Amateur Radio Society wens ik je veel leesplezier nadat je op deze link hebt geklikt:

On behalf of the Dutch Kingdom Amateur Radio Society, I wish you pleasant reading after you click on this link:

Wil je in plaats van een PDF te downloaden het Magazine on-line doorbladeren?
Dat kan ook, ga dan naar deze link:

Want to download the magazine browsing on-line instead of a PDF? This can also go to this link:

73 namens de DKARS
Peter de Graaf
Secretaris DKARS


Parallel Port Windows 7

Here is an LPT port test utility (thanks to K8UT) that will help you verify the real address of your new LPT port:

select from the menu on the left side of the page.

73, Ted W4NZ N1MMLogger plus Group


W6SFM Bug Roundup Event Coming Soon

Announcing W6SFM's BUG ROUNDUP at:

The Samuel F. Morse Amateur Radio Club, a Sacramento, California based CW enthusiast club wanted a special time to bring bug operators together on the air.

In the same spirit as ARRL's Straight Key Night, participants are encouraged to make simple, conversational, chewing-the-fat QSOs using their bug type key. This is an opportunity to exercise, share and exhibit your personalized fist.

This is NOT a contest.

Simply Call "CQ BR" so folks know you are a Bug Roundup Participant.

Grab that bug, clean those contacts, and leter fly!

Lets hear that Banana Boat / Lake Erie Swing" or that commercial KPH/WCC quality fist.
Reserve the day! Saturday November 19th-20th, 2016 7:00 AM to 7:00 AM Pacific Time (LOCAL) 1500 UTC through 1500 UTC
For more information and to help assist in spotting, potentially increasing QSOs, an On-line chat window will be available at the bottom of Bug Roundup home page located at the URL above.

We hope to hear you all on the air! 73,
W6SFM SlowSpeedWire & SKCCUserGroup


The semi annual Bug Roundup event is a lot of fun.

There are people from all around the world that enjoy getting on the air with their Bug Style keys, calling "CQ BR" to have a real QSO and not just exchange signal reports.

The purpose of the CQ BR event is to give the opportunity to those that have a Bug Style key a chance to make use of it.

Especially those who have not been on the air with their bugs in a while.

Although we do not discourage or stop those who have only a straight key, it really isn't the focus of this 'straight key' type of event.

Maybe this event will encourage you to pick up a nice second hand bug and give it a go?

The link in the announcement was changed some how by Yahoo when posted.

For some reason the top link worked fine, but the bottom one dropped off the .html ending.

Once again, the complete website address for more information (and some pictures) is located at the URL above.

Remember, there's a great 'spotting' chat style page there so you'll always be able to find someone on the air.

I hope to hear all of you out there! 73,



Heathkit VF-1 VFO

Anyone using a Heathkit VF-1 VFO with a Viking Adventurer?​



I used a VF1 with a DX20 about 52 years ago !

73, John...K8JD


In the past, yes, Bob.

We used the VF-1 to drive several different crystal controlled rigs.
What we had to watch was the supply Voltages.

My DX-20 & DX-35 did not have stable enough power supply.

I ran mine off a dedicated PS I built.
Joe V31JP


Thanks for the input

I'll look into that


Oh, for what it is worth, the VF-1 is what is in the DX-100s, also.
Joe V31JP


Yes, the DX-100 used the same basic circuit, but the 6AU6 VFO and its 12BY7 buffer stage had their plates supplies regulated by a 150 Volt 0A2 regulator tube.

That is why a lot of folks used a separate regulated power supply for their VF-1s.

With my DX-40, I used a Knightkit V44 VFO which had its own built-in regulated power supply.

Roger K9LJB


Gotcha beat John got my VF-1 in early 60s (61 I think).

Though I had died and gone to heaven after operation with two 80 meter crystals and one 40 meter crystal (with a strapping homebrew twelve watt xmtr).

I remember my VF-1 had some sort of instability (ground problem maybe?) such that when I moved my hand close to the case, the freq would shift!

Oh my what great memories ....

Dave W1DV


Yep Dave, my Novice and early General station was a matrix of homebrew stuff lashed together.

After high school I went on to study Ohm's and Circuitry and you went to study the Lord's Law and Prophesy, You WIN :D

73, John...K8JD


I bought my VF1 in 1957 and it had an 0A2 built in regulator, but took the voltage from the DX-35.

Unfortunately the series resistor was too large and the 0A2 stopped firing when the key was down.

It had a lot of chirp and some drift, but was good with as little chirp and drift as any VFO after the resistor was replaced with a lower resistance.

I remember it well because it was my first of many design changes.

I am afraid the VF! got a very poor reputation from this and suffers to this day.

I have three and an HG-10 which I have acquired recently, but have not tried as yet.

Cookie, K5EWJ


The voltage supply from the Viking Adventurer is sufficient that there is no chirp and this one is stable.

Just won't drive the Adventurer.

Still working on that.



Diagram zie attachment pse

the fall of HeathKit and the Rise of SparkFun

73, Editor

Is anyone interested in this key?

I bought it new and never used it.

My email is valid in
You can view it here:

Gary NZ8Y


Google Glass is being used to teach people Morse code:

Researchers at the Georgia Institute of Technology in the US decided to use Glass for this study because it has both a built-in speaker and tapper

Scientists have used Google Glass to teach people Morse code within four hours using a series of vibrations felt near the ear.

Participants learned it without paying attention to the signals they played games while feeling the taps and hearing the corresponding letters.

After those few hours, they were 94 per cent accurate keying a sentence that included every letter of the alphabet and 98 per cent accurate writing codes for every letter.

Researchers at the Georgia Institute of Technology in the US decided to use Glass for this study because it has both a built-in speaker and tapper (Glasss bone-conduction transducer).

In the study, participants played a game while feeling vibration taps between their temple and ear.

The taps represented the dots and dashes of Morse code and passively taught users through their tactile senses even while they were distracted by the game.

The taps were created when researchers sent a very low-frequency signal to Glasss speaker system. At less than 15 Hertz, the signal was below hearing range but, because it was played very slowly, the sound was felt as a vibration.

Half of the participants in the study felt the vibration taps and heads a voice prompt for each corresponding letter.

The other half - the control group - felt no taps to help them learn.

Participants were tested throughout the study on their knowledge of Morse code and their ability to type it.

After less than four hours of feeling every letter, everyone was challenged to type the alphabet in Morse code in a final test.

The control group was accurate only half the time.

Those who felt the passive cues were nearly perfect.
This research also shows that other common devices with an actuator could be used for passive haptic learning, said Thad Starner, professor at Georgia Tech.
N0PME Joe Fehrenbacher



Hello friends,
Part 1

FYI, our friend Jean-Claude - F6FCO has updated his website (in French).
This fellow is an excellent CW operator, an experienced technician and a talented handyman.

Have a look at his well made DIY stuff, not only radio equipment.

Homebrew vertical sideswiper, DV1:

Homebrew Carterpillar sideswiper:

Interesting articles, lots of hints and tips, I'm sure you'll enjoy the visit.
Have a nice day gents, BCNU.

Part 2

I wrote this memo for future reference if my TS-480SAT has a relapse.

I thought this might be of interest to other TS-480SAT/HX users as well.
    Anatomy of a miracle.
80m band brought back to life on TS-480SAT.
F5LAW, 13/10/2016.
Just after an automatic antenna tuning on 80m, the whole segment 2.5 - 4.7 MHz disappeared, no RX.
The procedure described below solved the problem.
1. Save data: Memory, Menu, and Auto Mode frequencies with KENWOOD Radio Control Program ARCP-480.

- Rig ON; Menu 56 PC data rate COM port communication speed: 9600 bps; Rig OFF.
- Connect PC to rig, here USB-to-serial adapter + F-F DB9 RS-232C straight cable (straight = cable pin 1 to 1 etc., ignore PC/rig socket layouts).
- ARCP-480, Menu Control > Set up..., select COM port and Baud rate: 9600 bps.
- Rig ON; ARCP-480, Menu Control > ON.
- ARCP-480, Menu File > Save...; Check all checkboxes; Save the .abk file.
- ARCP-480, Menu Control > OFF; Rig OFF.
- ARCP-480, Menu File > Exit.
- Remove RS-232C cable.
2. Firmware update and full reset procedure.
Information and firmware updating program:


3. write the data back after firmware update and full reset, ARCP-480.
- Rig ON; Check Menu 56 PC data rate COM port communication speed: 9600 bps; Rig OFF.
- Connect PC to rig with RS-232C cable.
- ARCP-480, Menu Control > Set up..., check COM port and Baud rate: 9600 bps.
- Rig ON; ARCP-480, Menu Control > ON.
- ARCP-480, Menu File > Open...; Open .abk file, transfer data.
- ARCP-480, Menu Control > OFF; Rig OFF.
- ARCP-480, Menu File > Exit.
- Remove RS-232C cable.

Yann, F5LAW

Thank's yann for sharing your useful experience.

As i am an owner of a TS480SAT, this procedure is in a safe place in case.

73, Med CN8YR

Part 3

Dear Yann and SSN friends.

After some time using my plastic copy of the above key I find it quite a noisy key to operate and I got to thinking that maybe the real Dyna Maniflex keys, being like an upturned metal bath/trough might be the same.

Would be interested in any comments.

Kindest regards to all

Martin g4zxn


Hi Martin,

You might try using a flexible contact strip like I use on my keys.

The Twanger also used the same contact strip arrangement and it makes the key very quiet.

Regards, Steve, W1SFR

Part 4

Howdy Martin, Steve and the group,
You are right Martin and I'm sure your version of the Maniflex is quieter than the original one.

Yes, the molded metal base really looks like an upturned trough and acts a bit like a resonator.

This isn't a real nuisance but if one day I mount the key on a flat base I would fill up the hollowed base with foam or a similar material, leaving a gap for the sliding post screw.

As Steve mentioned, flexible contact strips would make the action smoother and quieter although the clickety-clack isn't too disturbing.

In my opinion the main drawback of the Maniflex is its too flexible blade, at least on mine, too much unwanted vibrations + resonator base = a "jaw harp" key...
FYI, on some keys a hollowed base was used as a resonator to monitor one's sending.

I have an old French training key (end of 19th century) having a cast iron base that rings hollowly when used.

Most old landline French keys had a hollowed wooden base for the same purpose I assume, imagine the roar in a telegraph office...
Thanks fellows, keep up the good work, BCNU.

73, Yann, F5LAW.


73, from the town at the rivers "De Bergse Maas" and "De Dongen" Geertruidenberg (800+ years city rights)

your Editor Jan Pieter Oelp PA3CLQ



My simple website about Gigantic DF-Antennas

Part 1 "DF-Antenna Wullenweber Array"

Part 2 "DF-Antenna USSR Variants"

Part 3 "DF-Antenna USA Variant"

Next Part 4 "USSR OTHRA DUGA 1,2 & 3" at: