PA3CLQ's Leuke Linken Nr. 459


Beste mede amateur,

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

This mail contains a link which the 31th- 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

                                                        At your remembrance

CQMM DX module can be found at the N1MMLogger plus website at:

An so called CallHistory file is an up to date CWJF Memberlist for use in N1MMLogger plus by Editor pa3clq and can be found at:


Kubla Khan poem sent by semi-automatic key (bug) by N1EA

I heard someone with a beautiful fist sending "Kubla Khan" by Samuel Taylor Coleridge so I wanted to do a version with a bug.

    I tried to get my video recorder to record my wrist because many of the newer operators who operate paddles with their fingers weren't introduced to the wrist motions that older operators were taught.

    I only caught the wrist motion a few times and the video is blurry, but I had little control over the recording as I was sending and a friend was recording.

AF2Z sends this poem on his Junker here:

73, David



I've been playing with this thing the last few days.

I seems to be working OK. I can set the contact spacing real close so it take very little effort to key it....

After considering how I wanted to build this, I remembered I had a couple of T-bar drawer pulls left from a household upgrade.

Since I don't own a milling machine, the T-bars saved me a lot of elbow grease.

It was a fun project and give me a sideswiper to play with.

See you on the air

73 Jerry N0JRN


Resonant Speaker follow-up

I am delighted with the performance of the speaker.

However, I noted that it is rather unstable -- wanting to tip over or move at the slightest touch.

I decided to add a weighted base.

I got an extension and glued a knock-out plug.

I then lined it with duct seal (you can use clay).

Then I filled it half-way with BBs and then added another layer of duct seal.

 I then mounted the speaker's bottom into the extension. It is very stable now.

Andy, k2oo


Andy es all; I too had a problem with the speaker being bottom light/top heavy.

I picked up a bushing that the 45 street pushes into then I used a cd on the base.
I have a 700hz cf transducer, and found the 45° elbow to be perfectly (approximately 710hz) resonant. I'll try to upload pic.
73 all Dean K2WW


Skimmer version 4.0b5 (beta 5) has been released

SKCC Skimmer version 4.0b5 (beta 5) has been released.

It fixes a problem where K3Y appears as the callsign of the actual operator in your ADI file.

This version skips over these QSO entries.

The Skimmer is expecting to find the actual SKCC callsign of the operator in the callsign field, and then the K3Y designator in the comment field.

You can download the new version here:

73, Mark K7MJG SKCC Group


[slowspeedwire] WU Tubes

SHORPY photo .... Question: I thought they would just go to various op positions within the large office.

The caption says they connect to other offices in the city. 
Who might know for sure? 
73 , Skip Luke

Hi Skip, I don't see the link to the Shorpy photo.

That said, it is my understanding that yes the pneumatic tubes went around the cities, I've at least read that New York and Chicago had them as well as London and Paris.

I do not know how extensive they were.

    Remember in large cities 100 years ago and more local transportation was still pretty much horse drawn and it could take quite a lot of time to transverse the city.

So there was a lot of intra-city communications needed and the tubes provided this.

I've read that if you sent an intra-city telegram that sometimes the recipient would actually get the original you had written on because it had been sent entirely by the tube system.

 I've also read that in large cities there would frequently be a telegraph office every 5 blocks or so.

Even if you had a messenger called to your office (he would come from the nearby telegraph office) he would take your document and it would be sent by tube to the main office and then as it was a local telegram it would be sent out to the office nearest your designated destination by tube and then a messenger would carry it to its final destination.

This could all easily happen within an hour.

Almost the same thing was true if you sent a long distance telegram to another large city.

The messenger would pick it up and take it to his local office where it would be sent by tube to the main office in that city.

The routing clerk would then transfer it to an outbound wire to the destination city where it would be received by a telegrapher and the routing clerk there would then have it sent out the tube system to the nearest office to the destination where, again a messenger would carry it to its destination.

If the message required a quick response and the messenger waited for it, the response would take a similar return path and the response could easily be in the hands of the original sender within a couple of hours from when he had sent the original request.

    Remember, William Orton who was president of W.U. from 1867 to 1878 when he passed away, once said that the success of the telegraph service was not that it was faster than the mails but that it actually "annihilated time".

The tubes aided in that effort.

The volume of traffic just within large cities would have overwhelmed even the largest staff of telegraph operators.

73, Chris Hausler SlowSpeedWireGroup


Chris: That was interesting as we didn’t have pneumatic tubes other than inside telegraph offices here in Western Canada.

We had them in Saskatoon and Vancouver as the telegraphers in both cases were on the 2nd floor and telegrams were taken and sent out from the first floor, with access to the street.

Lavina Shaw


June 1943. Washington, D.C. "Miss Helen Ringwald, employee at the Western Union telegraph office, works with the pneumatic tubes through which messages are sent to branches in other parts of the city for delivery." Medium format nitrate negative by Esther Bubley for the Office of War Information.

Skip SlowSpeedWireGroup


New ICOM product announcement in Japan at:

Bob Irish K5zol



73, from the town at the rivers "De Bergsche Maas" and "De Dongen" Geertruidenberg (800+ years city rights) at: 51.702211N 4.853854E

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: