Instruction manual

ManualsBrandsWiMo ManualsAmplifierGS-31

WiMo Antennen und Elektronik GmbH

Am Gäxwald 14, D-76863 Herxheim, Tel. (07276) 96680, FAX: 6978, e-mail: info@wimo.com

CWKtiny Instruction manual V. 2.70

The CWKtiny is a self-contained microprocessor unit with built-in AT keyboard interface, usable as

morse type writer in connection with a standard PC keyboard. It's independend from a PC, easy

to operate and suitable for portable activities. Features known from electronic paddle keyers as

well as CW practising programs are part of the software. Furthermore the CWKtiny is applicable as

a control unit for beacons and repeaters or as a QRSS keyer.

Available characters

To simplify operating the second keyboard level (SHIFT) is not used. Thus, the key "?" had to be

transferred to a position in the first keyboard level. I've arbitrarily chosen the key right from the "L"

(US ENGLISH layout).

numbers:

0 - 9

letters:

A - Z

punctuation marks:

comma, full point, hyphen, stroke, question mark

internet symbols

@ (the new Morse signal "at")

Keys without any function show no effect, i.e. the error signal described below is not generated.

CW speed

Use Left / Right Arrow Keys to adjust coarsely, and Up / Down Arrow Keys to fine tune

telegraphy speed. While coarse adjustment the letter "v" is transmitted. Left / Right Arrow Keys

even take effect when CW transmission is already in progress. The

"ENTER" key

toggles

between speed1 and speed2. When speed2 is active the "Caps Lock LED" lights. At the

moment you change over from one to the other speed the currently active one is saved first in

RAM. For storing the new settings permanently press

"F10"

before you switch off the device.

PTT control / SPACE key / aborting CW transmission

"DEL" keys the PTT line constantly. Pressing DEL a second time returns to the state before.

Typing SPACE bar inserts an additional pause between words, except in some QRSS modes.

"TAB"

stops a running CW transmission immediately or aborts all kinds of inputs (e.g. into

memories).

Standard message memories

For storing QSO standard messages the keys F1 ... F8 are used. To save a text first press "ESC"

The "Sroll Lock LED" now signals active programming mode. At the same time CW speed 2 is

switched off to achieve an initial state for programming. After pressing ESC choose the F-key you

want to program then write the text and terminate again with "ESC". To program for instance "F1"

do the following:

ESC F1 this is the text ESC

Summary of content (15 pages)

PAGE 1
WiMo Antennen und Elektronik GmbH Am Gäxwald 14, D-76863 Herxheim, Tel. (07276) 96680, FAX: 6978, e-mail: info@wimo.com CWKtiny Instruction manual V. 2.70 The CWKtiny is a self-contained microprocessor unit with built-in AT keyboard interface, usable as morse type writer in connection with a standard PC keyboard. It's independend from a PC, easy to operate and suitable for portable activities. Features known from electronic paddle keyers as well as CW practising programs are part of the software.
PAGE 2
All of the characters mentioned above are applicable. The text messages may contain control characters, e.g. to increment the contest number automatically by the character (+) or to transmit 599 with a faster speed (ENTER). Alt-key combinations are valid too. Wrong inputs are indicated by flashing keyboard LEDs. Four 32 Byte (F1...F4) and four 64 Byte memories (F5...F8) are available. F1 ... F4 F5 ...
PAGE 3
S: L: G: B: R: Dit length (short) Dah length (long) space between dots and dashs (gap) space between characters (break) you have all messed up ? => back to standard values (reset) Default parameter setting example: "F12" (practising on) => "1" (number of program) => "R" (reset) => "F10" (save parameters) CW prosigns The most common telegraphy prosigns shown in the following table were programmed as ALT-keys : AR Alt-A BK Alt-B CL Alt-C KN Alt-K KA Alt-O SK Alt-S AS Alt-W VE Alt-V WR Alt-
PAGE 4
Overflow indication In programming mode keyboard LEDs flash to indicate overflow if more characters are written than memory space is available. Typing very fast while sending is underway can cause an overflow of the type-ahead buffer (64 bytes). In this case the Num-Lock-LED is already warning when 5 characters free space are still remaining in the buffer but under normal circumstances it is hardly imaginable to reach such a state.
PAGE 5
The volatile "quick memory" is not suitable in "auto beacon mode" as it losts its content in powerless state. Return to normal mode as usual with TAB. The keyboard can be removed from PS/2 socket in "auto beacon mode" but be aware, if the beacon text contains commands that switch on keyboard LEDs a software hang up is caused due to the missing reply of the keyboard.
PAGE 6
^C ^D ^S T (speed three) ^S F (speed five) ^S 1 ... ^S 9 ^S 0 ^S N ^H F text ^ ^H M text ^ ^H S text ^ ^H D text ^ ^Q ss ww nn ^Z ss dd nn ^F ss ww ^B ss ww ^J ss ^G S text ^ ^G F text ^ ^G T text ^ FSKCW mode “on/off”, takes only effect if an ^S command was given before DFCW mode “on/off”, takes only effect if an ^S command was given before QRSS3 "on" (dot length 3 sec.) QRSS5 "on" (dot length 5 sec.) QRSS10...90 "on" (dot length 10...90 sec.
PAGE 7
FSKCW (Frequency Shift Keying CW) The PTT line is keyed permanently as long as the FSKCW transmission lasts. During pauses between dots, dashes or characters the frequency is shifted downwards. Whilst the upper trace shown on the screen carries the morse information the lower trace is drawn during signal pauses. The advantage of this mode is its redundance.
PAGE 8
FAT CW The dots and dashes of FATCW (fixed element length) are formed by square waves of a very small FM deviation (1 DAC step) to let items appear fatter on screen. Other graphical wave forms The commands ^F and ^B output falling and rising ramps whereas the ^J command sets the binary counter which controls the D/A converter to a specified value. In combination with ^P and ^T arbitrary signal shapes can be generated.
PAGE 9
1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) 15) Ü / A Ö Ä Y M , . - 0 ? Q W Z 1 - Q W Y A ? Z M , . / A Z Y Q M W ? . / , - 2 3 ? Q W Z / A Y M , . - 4 ? Q W Y / A Z M , . - 5 / Q W Y ? A Z M , . - 6 / Q W Y ? A Z M , . - Paddle keyer modes For using the modes described below a 2-lever-paddle is necessary. It consists of two separately actuated switches.
PAGE 10
Ultimatic Much more user-friendly is the Ultimatic logic of "yesteryear" as more characters are supported than just squeezing an A,C, N, or a period in Iambic mode. But confirmed users of either mode A or mode B iambic keying probably won't like Ultimatic mode. Once a certain keying sequence is ingrained, it's hard to change to something new.
PAGE 11
Connectors and external circuitry The following figure presents all details of connecting power supply, radio, keyboard, squeeze paddle and D/A converter. Paddle keyer Connect the DIT/DAH paddle switches from keyer pins to ground level as shown in the figure above. Do not apply external voltage to these pins because no precautions were taken to prevent damages of the processor inputs. For more security one might insert a weak resistor into these lines (22 ...47 Ohms). DIT paddle DAH paddle JP3-2 (P3.
PAGE 12
In this case the combined resistance of R2,R3,R4 is a minimum and so is the voltage at the varicap. When the output is switching to "High" the influence of R2/R3 is decreasing, the rising voltage on R4 lowers the capacity of the varicap and the frequency jumps up. You could use here as well a transistor stage which switches a capacity in parallel to the frequency determining circuit.
PAGE 13
There is still a slight unlinearity at step 8, 16 and 24 as you see it in the picture which might be corrected by adjusting the values of R1 - R5. Output control The digital keyer outputs are also applicable for switching between different power levels, antennas or frequencies. How to influence outputs was already said in chapter “Output control commands”. In addition to that an example circuit for transistor stages attached to the CWKtiny outputs.
PAGE 14
Contest operation Depending, if you're looking for callers or call yourself CQ the procedure is similar to the first and second example. F1 could contain a contest call and F4 the self-incrementing check number. The usual "599" report and the "test" mark can be transmitted with increased speed. Adjusting tempo 1 to a slow and tempo 2 to a fast speed is meaningful in this case. F3 is prepared to request the QSO partner for repeating the control number.
PAGE 15
4) unsymmetrically square wave By influencing the DAC pins directly with the commands ^1 and ^3 it is possible to generate an unsymmetrical square wave with a 2 sec. "H"- and a 6 sec. "L"-portion, which is 5 DAC steps high. The inner part of the programming sequence is repeated 5 times. Outputs 2exp0 and 2exp2 are set to "HIGH" by ^1 and ^3, which is equal to the decimal value 5. ^P ^R05 ^1 ^3 ^T02 ^1 ^3 ^T06 ^R ^P 5) Triangle wave An endless triangle wave of 10 DAC steps and 0.33s step length is sent.