Friday, December 26, 2008

Learn CW using the Koch Training

Amateur license restructuring is here. You no longer need to pass a 13- or 20-word-per-minute (wpm) test to gain full operating privileges. Passing a 5-wpm test gets you everything. However, there are good reasons why you should do more than that. Having a level of Morse proficiency that is of real use on the air, meaning that you can copy at 12-13 wpm or more, will add immeasurably to your enjoyment of Amateur Radio.

Such rewarding HF activities as DXing, contesting and QRP operating still rely heavily on CW. Thousands of hams enjoy CW for its own appeal as a relaxing mode different from most other means of communication. And even on VHF and higher frequencies, you'll find that exciting activities such as Moonbounce and weak-signal work still require Morse skills for full participation.

The pressure to reduce the code-speed requirements came from the widespread perception that getting to 13 or 20 wpm is a nearly imsurmountable barrier. That perception is wrong. For little more investment of time than it takes to pass the 5-wpm test, you can gain real, higher-speed code proficiency that will enhance your enjoyment of the hobby.

Most of what you've been told about learning Morse Code is wrong -- dead wrong. Amateur radio operators traditionally have used the slowest, most frustrating, most painful and least effective techniques possible for gaining code proficiency.

You can gain real code proficiency. You can do it in a reasonable amount of time and with a minimum of frustration and pain. In order to do so, you must approach code training from a different perspective and use different techniques from those common among amateurs for the past half century.

Learn Morse Code using the Koch Method

It will require work (just as it does to get to 5 wpm). You will have to commit yourself to at least one 15-30 minute training session every day until you reach your goal. You may succeed in a month or in several months; individuals differ greatly. Without this committment, however, you may as well not bother.

So what's new here? By using a code training method devised by the German psychologist Ludwig Koch some 60 years ago, you will progress as quickly as you possibly can, with ample reinforcement and little frustration. By understanding this method and how it builds your code proficiency, you will know why you have to spend time practicing and you'll be able to make a reasonable prediction of how long the total effort will require.

We're going to start on your road to success by throwing some time-honored ham-radio traditions onto the trash heap where they belong. These are:

  • Slow (5 wpm) code -- It ought to be illegal to teach anyone code at 5 wpm. Every minute spent toying with 5 wpm code is irrevocably wasted. In addition, as we'll see later, starting with slow code is a virtually-guaranteed path to frustration and quitting. Morse at 5 wpm and Morse at 15 or 20 wpm are completely different critters, and you don't want to waste time on the wrong one.

  • Charts, mnemonics, musical cues and other "memory aids" -- These things make you think about what you're doing while trying to copy code. That is deadly to proficient copying.

  • Code tapes -- In very short order, and unconsciously, you'll memorize the tape. This will lull you into false confidence in your ability. That false confidence will be quickly shattered when you hear transmitted text that you haven't memorized.

  • Copying QSOs off the air -- You don't know the speed of code you find on the bands, and much code on the air is pretty badly sent. All this makes it useless for training purposes. Formal code-practice sessions, such as those on W1AW, are OK, however.

Now that you know what you're not going to do, let's start examining just how you can best gain code proficiency.

The Mechanics: Just what is code training, anyhow?

Go to the shack of a veteran CW operator, or visit the CW station at a club Field Day operation. Watch people copy and send code at 30 to 35 wpm. You'll notice they're pretty relaxed about it; they're not sweating each character as it comes out of the speaker and they're not racking their brains to "figure out" what's being sent. Code has become second nature to them.

That's the key to code proficiency. Copying code must be a thought-free process. When you hear a character, you should know, without thinking, what it is. It should be a reflex. In fact, copying above about 10 wpm can only be done by reflex. Above that speed, thought processes are too slow to succeed.

That's why slow code is a deadly trap, and why traditional amateur methods of code training are so painful and frustrating. Most hams are told to memorize all the characters, then start building their speed. When you do it this way, you build a "lookup table" in your brain, comparing each character you hear with those in the lookup table until you find a match. This process shuts down from overload at about 10 wpm. That's why people experience a "plateau" at 10 wpm, and don't see any progress for weeks or months.

Those who finally get over that "hump" and progress beyond 10 wpm do so because, through constant practice, they have begun to copy code by reflex instead of by thought. They are the lucky ones; this 10 wpm barrier is where many folks give up out of frustration.

Code training, then, should completely bypass the lookup-table phase and begin by building copying proficiency as a reflex. This was recognized in the 1930s by the German psychologist Ludwig Koch, who devised the most efficient method known for Morse training. It's his method, and how you can use it, that we're going to examine in detail.

Morse Training by the Koch Method

Koch's method is a simple, direct way of building reflexes. However, it requires either a computer and Morse software or a personal trainer. That's why it was overlooked for so many years. Now that computers are commonplace, it should become the standard Morse training method. Here's how it works:

You start out by setting up your computer (or a microprocessor-based code tutor machine) to send you Morse characters at 20 wpm and at an overall sending speed of at least 15 wpm. You then get out your paper and pencil and have the machine start sending -- but only two characters. That's right, for your first sessions, you'll only have two choices. Copy on paper for five minutes, then stop the machine and compare what you copied with what the machine sent. Count characters and calculate your percentage of correct copy.

(Here is a GREAT Koch-method training software package: G4FON's CW Trainer from G4FON, Ray Goff. NOTE: I HIGHLY RECOMMEND THIS TRAINING METHOD - Tomas, NW7US)

(See Setting SuperMorse to do Koch for tips on using the Koch method with SuperMorse.)

If your score is 90 percent or better -- congratulations! You just learned your first two characters, and, importantly, you learned them at full speed. You'll never have to learn them over again. If you didn't make 90 percent, practice some more. As soon as you can copy the first two characters with 90 percent accuracy, add a third character to your practice. Your accuracy will drop as you work on assimilating the new character, but it will rise again to 90 percent or better. Then you add the fourth character, and so on.

This method does not allow you to build that lookup table in your brain. To copy at full speed, you must build the reflexes in order to achieve 90 percent accuracy. And that's what you're spending your time doing -- building reflexes. Think of it as a parallel to perfecting a tennis swing or mastering a gymnastic routine; you're practicing until you get it right. The Koch method of building code proficiency character-by-character is similar to standard methods of teaching touch typing, another skill that must be reflexive.

This is a very individual method of training -- you progress at your own best speed, and spend only the time required to gain each new character. This means that you will waste no time in reaching your goal.

How much time is required? That will depend on the individual. Koch himself, with hand-picked students, got a group to master 12 wpm code in a mere 13.5 hours. You probably won't match that, but that's much faster than any other method in the psychological literature. You can get an idea of how long it's going to take after you've mastered a few characters. Keep track of your training sessions (some software will do this for you) and calculate your hours-per-character rate (or characters-per-hour if you're really fast!). That, multiplied by the 43 characters in the amateur Morse test, will give a rough idea of how long it's going to take.

While the Koch method is the fastest method of Morse training, speed alone is not its principal advantage. Its principal advantage, and a major difference from other methods, is that it provides you with constant positive reinforcement. This begins with your realization, after mastering the first two characters, that you can copy code at 15 or 20 wpm, because you just did it. After that, each new character mastered is further proof of your progress. Contrast that to slowly trying to build speed up from 4 or 5 wpm, then hitting the plateau at 10 wpm and seeing no progress for a long time. With the Koch method, frustration is at a minimum.

Constant testing is necessary to ensure that you maximize the effectiveness of the Koch method. You must copy on paper, so you can grade yourself. Remember, if you score 90 percent accuracy or better, add another character. If you score any less than that, try again. By constantly testing yourself on continuous copying of at least five minutes, you know exactly how you're doing and exactly when you should add another character. This results in the fastest progress possible.

Naturally, with the Koch method, you'll be copying random groups of characters, rather than words, until you've mastered the entire character set. If your software allows, make these groups of random length, rather than a constant stream of five-character groups. This will ease the transition from random groups to actual words. Yes, there is a difference in the rhythm and "feel" of words and random groups. Once you've become accustomed to copying words, you should start copying sample QSOs, which are the format of the amateur tests. Pay special attention to callsigns, locations, and numerals; these are the types of things that can form questions on the test.

As you proceed toward your goal, remember that some days are just going to be better than others and some characters will take longer to assimilate than others. You know, however, that you can reach your goal because you've already mastered some characters and proven that copying at full speed is something you can do. Keep in mind that what you're doing is building reflexes, and that takes time. The amount of time you require has nothing to do with your intellegence; it's just how long it takes for characters to "sink in" and become part of your reflexes.

So there it is -- your path to real, useful Morse Code proficiency. After you've used this method, and start enjoying the wonderful world of HF radio, try a few CW QSOs. With Morse code developed as a reflex, you may just find that you really enjoy using it on the air. After all, you've gained proficiency without the frustrating ordeal that most hams have endured for decades. See you on the HF bands!

Questions? They're probably answered in Morse Code: Breaking the Barrier, the author's complete book on code training and CW operating, published by MFJ Enterprises, Inc.


Bibliography

Finley, D.G., "Reducing the Barrier: Effective Morse code training," Radio Fun, May 1995, pp. 14-15.

Finley, D.G., "Effective Training for High-Speed Morse: An Auditory-Learning Based Model," Morsels, Volume 2, Number 2, Fall/Winter 1996/1997, p. 3.

O'Keeffee, V., "Learning Morse," QST, August 1972, pp. 58-62.

Peak, H., "Koch's Method of Learning Code Reception," Psychololgical Bulletin, XXXIX (1942), p. 495.

Taylor, D.W., "Learning Telegraphic Code," Psychological Bulletin, XL (1943), pp. 461-487.

Taylor, D.W., "The Learning of Radiotelegraphic Code," American Journal of Psychology, LVI (1943), pp. 319-353.

Installing The FT-857 Options

Author: Dave Fifield (AD6A) - dave@ad6a.com

Here are some photos showing the procedure to install the optional filters (and a few showing off the color display), TXCO-9 and DSP-2 to the Yaesu FT-857 rig. There's nothing hard about installing any of these modifications. The instructions in the Yaesu manual are fairly comprehensive and the menu options to select them are easy to get right.

Make sure to get the filters and TXCO-9 round the right way. As with it's big brother, the FT-897, it's worth noting that the FT-857 optional filters are labeled with different part numbers than are on the boxes they come in! The YF-122S is marked XF-119SN and the YF-122CN is marked XF-119CN.

The schematic of the FT-857 is almost identical to the FT-897. Both rigs support the ATAS-100 and ATAS-120 antennas with every option you can think of for diplexer/separate antenna use. Please email me if you have any questions or comments. Click on any of the pictures to see it in full detail. Hover your mouse over the pictures to see my comments on it.

The FT-857 opened up ready for the options to be added. The standard oscillator - tucked away in the corner by the rear heatsink. The FIL-1 and FIL-2 optional filter positions - pretty obvious!

The 2.3KHz SSB filter installed. The TXCO-9 option installed. The 300Hz CW filter installed.

The DSP-2 board is fitted vertically - the connector is all that holds it in place, but it seems mechanically rigid enough. The DSP-2 option board - vertically mounted. The other side of the rig - the power amps and filters/switching. Note the two internally mounted fans that blow air over both the top and bottom PCBs in the rig - nice design feature!

The rear panel - note the trend towards no direct labeling - I don't like this! The label showing the rear panel connections is on the underside of the rig... The cooling air intake - behind the front panel, but fully exposed when you remote mount the head - good design IMO!

Well, I tried to capture some of the colors - this is meant to be green, but the digital camera doesn't seem to think so! ...and this is meant to be bright red....

...and this is meant to be blue - oh, it is!..... ...and finally, purple (violet, whatever). There are 32 shades of these basic colors - coolio!

Legal notice - All the material on this website is Copyright 2003 Dave Fifield, AD6A, all rights reserved - please ask for permission if you would like to utilize any or all of it in any form other than for your own immediate personal use.

This article can also be found at http://www.ad6a.com/FT857options.html.

MARS mod of the FT-857 (US version)

FT-857 (US version)
Modification for TX:
1.8-56MHz, 137-164MHz, 420-470MHz
  1. Remove the seven screws affixing the top panel of the transceiver, and gently lift it upward.

  2. Carefully remove the small 2-pin speaker plug from the left rear corner of the transceiver interior then remove the top case and set it aside for the moment.

  3. Locate the nine jumpers about 2" from the front edge of the main unit and about 3/4" from the left edge. For 144/430MHz expansion only, remove the jumper at JP1002, leaving the other jumpers alone. For complete expansion per the above listing, place jumpers at JP1007/1008/1009, and remove the jumpers at JP1001/1002/1003/1004/1005 (leave the jumper at JP1006 in place). NOTE THE UNUSUAL SEQUENCE FOR THE NUMBERING.

  4. Replace the top panel; don't forget to re-connect the speaker lead removed in step 2.

  5. With the transceiver off, press and hold in the [F] and [V/M] keys; while holding them in, turn the radio on. Modification is now complete.


Hanno Vogels, DG8JZ

Wednesday, December 24, 2008

Yaesu VX-7R Mods

———- Transmit Mod VX7 ——————————————————————————————————————
Remove the battery pack.

Remove the sticker/cover seal for the pressure sensing unit (SU-1), in the battery compartment. This is the black strip above cellular warning label and is where the SU-1 option goes.

Locate row of eight jumpers. They are numbered.

For Mars/Cap, remove solder jumper 5.

For Freeband, remove solder jumper 4 and 5.

Reset microprocessor. (Press and hold in the 4, band, and v/m keys while turning the radio on.

You can do all of this or you can do a soft-mod using VX-7 Commander which can be found at KC8UNJ.com. It’s free software and all you need is a programming cable and adapter. This is the route that I took when modifying my VX-7 since it is extremely easy to do, and just as easy to return the radio to it’s original state.
If something should happen to KC8UNJ’s server here are the files on my server.
Download VX7 Commander Version 1.3.4
Full Installer 2.4MB zip

Download VX7 Commander Version 1.3.4
Full split into floppy-sized chunks 2.4MB zip

Download the VX-7 Commander 1.3.4 update
only if you ALREADY HAVE VX-7 COMMANDER 1.3.3 INSTALLED

Download VX-7 Commander Japanese Direct Input Version 1.3.3
(Requires Japanese Windows)

ENJOY
TX Frequencies:
Freeband: 40-224.995Mhz and 300-579.995Mhz
Mars/Cap: 50Mhz-54Mhz, 140Mhz-174Mhz, 222Mhz-225Mhz, and 420Mhz-470Mhz.

—————————————————————————————————————————————————————————-——- Free Band Mod VX7 (Europe)—————————————————————————————————
If you have a vx-7 europe version here is how to modify.

Remove the battery pack.

Remove the sticker/cover seal for the pressure sensing unit (SU-1), in the battery compartment. This is the black strip above cellular warning label and is where the SU-1 option goes.

Locate row of eight jumpers. They are numbered.

For Freeband, remove(Unsolder) all solder jumper exept 3

Reset the transceiver by holding down MON/F + HM/RV + Internet Key and power up the transceiver
This will display the Vertex Standard logo instead of Yaesu. Bear in mind that resetting the transceiver by holding down 4 + BAND + V/M and powering up the transceiver WONT work!

TX Frequencies:
Freeband: 40-224.995Mhz and 300-579.995Mhz

—————————————————————————————————————————————————————————-——- Another European VX-7 TX MOD ———————————————————————————————-
I own the B1 European version (Label outside the box indicates DST:EXP / TYP:B1). Prior to any modifications the transceivers jumpers was soldered on positions 2,4,5,7 (factory setting) and the unit was capable of working on the following frequencies ONLY!

50-52MHz (RX ONLY, NO TX Possible!)
144-146MHz (RX/TX)
430-440MHz (RX/TX) Reception was NOT possible anywhere outside these limits!

In order to modify it you should:

Unsolder every jumper

Reset the transceiver by holding down MON/F + HM/RV + Internet Key and power up the transceiver
This will display the Vertex Standard logo instead of Yaesu. Bear in mind that resetting the transceiver by holding down 4 + BAND + V/M and powering up the transceiver WONT work! It will just enter a curious set up:

RX on all bands

No WX Channels

Menu Item Misc Setup 20: BEAT SQL (Instead of WX Alert)

Menu Item Special Memory 6: JR (Instead of Marine)

Menu Item Misc Setup 17: Japanese (Instead of English)

Transmittion on 50-54MHz, 137-174MHz, 420-470MHz
After the aforementioned modification you will have continues RX coverage from 504KHz up to 999MHz (including analogue cellular frequencies – NO GAPS!)

—————————————————————————————————————————————————————————-——- More on the European Version————————————————————————————————-
Model- EXP/B2 Europe
All jumpers open.
What you get
TX - 40~222 Fm and Air band- yes
300~550
RX - As the manual says.
What you lose:

ARS on Ham bands
.Special Marine Memory-instead you get JR Memory and TV in Weather channels ( MONF+ 3 WX)