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The MTR-5B

Five band Mountain topper

KD1JV Designs

[email protected]

revised 12-12-15

(shown with optional enclosure sold by LnR Precision, production kits use white backlight display)

Features:

Switch selected 40/30/20/17/15 meter bands

(no band modules to lose or change out)

Wide operating voltage range, 6 to 12 volts

15 ma Rx current at 12V supply

Efficient transmitter. Low current with 4W output

LCD display

Push button or Optional rotary tuning

24 hour clock built in, with battery back up

Three 63 character programmable message memories

Message beacon mode with adjustable pause time

Small size: can fit into a 4” x 3” x 3/4” box

MTR-5B Page -1-

Five Band Mountain Topper - KD1JV Designs

Manufactured by LNR Precision, Inc. www.LNRprecision.com

Manual Revision 12-12-15

Содержание Mountain Topper MTR-5B

Страница 1: ...perating voltage range 6 to 12 volts 15 ma Rx current at 12V supply Efficient transmitter Low current with 4W output LCD display Push button or Optional rotary tuning 24 hour clock built in with batte...

Страница 2: ...witch functions Frequency Tuning The UP arrow Tune Up and DOWN arrow Tune Down switches change the operating frequency in 50 Hz steps Holding the switch closed for longer than 1 second begins a fast t...

Страница 3: ...p will turn on straight key mode 2 TAP the RIT switch while in Adjust Code Speed mode Tapping will toggle straight key mode ON and OFF Straight key mode cannot be turned OFF if a mono plug is in the p...

Страница 4: ...nd message entry mode will return for another message if desired When done TAP EXIT to escape to normal operation TAP RE to escape back to message entry mode without storing TUNE TUNE Tune mode allows...

Страница 5: ...the first word space after the paddle is closed and normal operation restored when the paddle is released Beacon repeat mode After a message is in progress the message may be set to repeat by HOLDING...

Страница 6: ...oard pad while applying little pressure to be sure it lays flat on the PC board Be sure to heat both the pad and the end of the part Generally additional solder is not needed for this connection Secon...

Страница 7: ...Construction Reference photos of assembled board MTR 5B Page 7...

Страница 8: ...MTR 5B Page 8...

Страница 9: ...1206 1 LM386MX 1 NOPB AUDIO AMP SO 8 1 680 pfd 681 Blue 100V C0G 10 1206 1 LM4808M AUDIO AMP DUAL SO 8 11 30 pfd green Trimmer caps 1 MSP430G2433IPW28 16 BIT 8K PROCESSOR TSSOP 28 1 AD9834BRUZ 24 BIT...

Страница 10: ...are not marked so these have been color coded with a marker on the part carrier using the resistor color code to indicate their value in pfd SOT 23 parts have numbers printed on them but are very har...

Страница 11: ...ues Capacitors are highlighted in light Blue 101 100 pfd 103 10 000 pfd 0 01 ufd Resistors are highlighted in yellow Inductors are highlighted in Orange Through hole and semiconductors are highlighted...

Страница 12: ...ber on the 8 pin ICs to tell them apart Using a magnifying glass and tilting the part slightly to the light will aid in reading a part number The rest of the ICs are in unique packages and are easier...

Страница 13: ...ted on the D1 D2 and D7 diodes is also hard to grasp D8 should be easy to identify as it is the only two legged part of its size and somewhat larger than the D1 type diodes Color coding is used on the...

Страница 14: ...few left over resistors and one 10 uHy inductor which will go on the top side of the board Be sure to put these in a safe place for later use If planning adding the 80M band and eliminating one of the...

Страница 15: ...eir height the two aluminum electrolytic caps will be installed later with the through hole parts Otherwise the board will not sit flat when you install the top side parts You will have a few caps lef...

Страница 16: ...ures the adjustment screw is grounded and will not be affected when using a metal screw driver to adjust it F1 is a resettable fuse It is different than the other 1206 sized cap parts as it has a gree...

Страница 17: ...installing the slide switches solder just one pin and then double check to make sure switch is sitting flat and square to the board If the switch is cocked and more than one pin is soldered straighte...

Страница 18: ...ce will start with 80m in the L17 L18 positions and all the other bands will move over one slot Typically when adding 80m 15m will be deleted but any other band can be eliminated instead Just keep the...

Страница 19: ...on a kit does not work and catching them now will save much time and effort and possible damage later Power Jack and Antenna jack wiring The power jack will need to wired to the board before the board...

Страница 20: ...he display will read CAL REF on the lower line Connect an accurate frequency counter to TP1 located the left of the display and just below R32 Use the tune up or tune down switches to set the frequenc...

Страница 21: ...t 2 5 watts with a 9V supply and about 4 5 watts with a 12V supply Advance to the next band and test Repeat for next band Power output is sensitive to inductance of the input side transmitter low pass...

Страница 22: ...gular shape Another option is to drill an oversized round hole and make a thin plastic overlay to cover the panel and hide all the sins Cutting the large rectangular hole for the display is most easil...

Страница 23: ...RX Schematic MTR 5B Page 23...

Страница 24: ...Filters MTR 5B Page 24...

Страница 25: ...CPU DDS TX MTR 5B Page 25...

Страница 26: ...MTR 5B Page 26...

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Содержание Mountain Topper MTR-5B

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LNR Mountain Topper MTR-5B, Руководство пользователя

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Содержание Mountain Topper MTR-5B

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