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Version: 13. Sepe

,m

er 2004

4

switchable HF bands. Based on the Black Forest, the Tramp and the Spar-
row, it was possible to develop a kit in 4 months, primarily using conventi-
nal parts (only some 12 SMD’s), for a 5 band SSB/CW transciever, leaving
nothing to want for its price class. Peter, DL2FI, nicknamed it SPEAKY (
Gonzales) as complement to the  Miss Mosquita. The following data speaks
for themselves:

Speaky technical data:

-

From 1 to 5 HF bands switchable from the front of the box.

-

Modulation: SSB/ CW/ PSK31 etc.

-

Power input: 10W PEP

-

DDS/ PLL- frequency control, with programmable frequency

steps.(rotary encoder)
-

choice of RIT or XIT; integrated keyer

-

VFO tuning range 500KHz

-

optional digital frequency readout.

-

automatic bandwith selection ( 2,4KHz/ 600Hz) of the 4pole 8MHz-

crystal filter
-

tunable high Q preselector

-

High current RF input circuit with dynamic feed back.

-

+7dBm- Schottky- ring mixer ( TUF- 1)

-

High current J- FET IF amplifier

-

> 90dB IF dynamic range (A244 IC)

-

AGC production with peak to peak rectifier.

-

AF section with power for loudspeaker

-

robust PA with 2 x 2SC1969

-

Transmitter output of 10W PEP

-

switchable harmonics filter

-

integrated speech compressor with a compression of max. 15: 1

-

[please change this] Modulationsklirrfaktor of the compressor < 1% !!

-

adjustable transmitter power

-

CW- VOX with adjustable decay

-

10,8- 15V power supply

-

Stable enclosure with prepunche holes

-

Digital Frequency readout - measuring LO frequency

-

Bargraph S-meter/relative Power Meter

Description of the individual stages:

1. Band switching:

One of the main qualities of the transceiver is the ability to switch up to 5
HF band modules. To conserve space, only electronic switching was conside-
red. All band specific parts are mounted in replaceable band modules. The
following sections are switched when changing bands.:

-

VCO

-

Band set oscillator

-

RX/ TX preselector

The inputs and outputs of all band modules are connected via the PIN
diodes D1- D2- D5- D6 to a common bus. The 10V switching signal activates
the diodes of the corresponding HF module. The chosen module is RF-wise
connected to the bus. All other diodes on the inactive modules are blocked
and high impedance. The systems impedance of the RF ports is some 50-
100 Ohms, so the inactive modules are effectively decoupled.

Содержание DL-QRP-AG

Страница 1: ...DL QRP AG Speaky 5 Band CW SSB PSK Transceiver QRPproject Motzener Stra e 36 38 12277 Berlin http www QRPproject de Telefon 49 30 85 96 13 23 e mail support QRPproject de Manual fiservice Peter Zenker...

Страница 2: ...Section 4 AF Amplifier 16 Testing Section 4 17 Section 5 Carrier osc and Switch 18 Testing Section 5 19 Section 6 BFO IF Amp AGC 20 Testing Section 6 21 Section 7 IF Amplifier IF Filter 22 Torroid Sc...

Страница 3: ...56 20 by 20 mm squares Horizontally marked from A to H and verti cally 1 to 7 Every part is easy to find from this square grid At the end of each text section you will find a test description Please...

Страница 4: ...r loudspeaker robust PA with 2 x 2SC1969 Transmitter output of 10W PEP switchable harmonics filter integrated speech compressor with a compression of max 15 1 please change this Modulationsklirrfaktor...

Страница 5: ...he difference between the output frequency of IC2 and IC4 This voltage is smoothed in the loop filter of R3 R4 C1 and passed to the VCO to give equal phase of the two 66 kHz signals If the VFO frequen...

Страница 6: ...ing of the IF signal to the IF filter We use a 4 pole 8 MHz Cohn filter with electronically adjustable filter band width The usual capacitors are replaced by capacity diodes BB112 The crystals are cho...

Страница 7: ...dynamic range for 1 dB og output dynamic range The klirrfaktor please change of the output signal is less than 1 This compressor will allow the PA to swing to the QRP allowance of 10W PEP This gives...

Страница 8: ...transmitter is followed by a 3 stage Chebychef low pass filter with a cut off frequency of 33 MHz to reduce harmonics in the BC TV bands by more than 60 dB The in band variation is a maximum of 0 3 d...

Страница 9: ...tage all critical parts are supplied by a stabilized 10 V derived from the low drop regulator IC15 This concept limits the supply voltage for the transceiver to 10 8 to 15 Volts The 5 Volt regulator a...

Страница 10: ...ith a loupe D32 is a comparatively large component D1 and D2 looks alike but have a printed marking The cathode is marked by a ring When diodes are mounted standing up it is always the cathode lead th...

Страница 11: ...he pins Here you will mount a switch later on Testing Section 1 1 Visual inspection As a first test inspect every section with a loupe to find shorts Take this test seriously Even a master solderer ma...

Страница 12: ...t a few values 101 100 pF 0 1nF 0 0001uF 102 1000 pF 1 0nF 0 001uF 103 10000 pF 10nF 0 01uF 104 100000pF 100nF 0 1uF 221 220pF 0 22nF 0 00022uF 222 2200pF 2 2nF 0 0022uF 223 22000pF 22nF 0 022uF 224 2...

Страница 13: ...TO92 casings as the voltage regulators of section 1 Check the marking with a loupe to avoid mixing them up The mounting direction is shown in the placement diagram For the MOSFETs remember to dischar...

Страница 14: ...As most cheap multimeters today measures capacitors to below 1 pF this should pose no problem Multimeters are offered by QRPProject at 29 Euro C13 1nF 102 C6 C14 8p2 8p2 C6 C15 220pF 221 n22 C6 C16 6...

Страница 15: ...stors temporarily under the crystal as placeholders during soldering Remember to remove the resistor leads again after soldering Q1 4 096MHz HC18 B6 7 St3 connector A6 St4 connector A B7 PIN7 A B7 To...

Страница 16: ...ave a strong 4 030 signal Method 2 Oscilloscope owners could inspect the signal at C13 It should be some 2 3 Vpp Method 3 With an absorbtion frequency meter or a grid dip meter in absorbtion position...

Страница 17: ...2 PIN33 E3 PIN34 E3 PIN43 E F 1 2 PIN44 F1 2 PIN 8 D2 3 Test Building Group 4 BG 4 1 Visual inspection see Section 1 2 Resistance test see Section 1 Connect power supply as described at building Group...

Страница 18: ...rs in a metal case Caution first compare the three terminals exactly with the respective holes on the pc board The trim potentiometers are gliding very easy into the holes if they are mounted right If...

Страница 19: ...Neosid filter 7 1 F10b B1 22 turns 0 1mm lacquered copper wire AWG 38 We only have to put in 3 pins to finish this section pin 28 C D2 pin 29 D2 pin 38 E2 Test Section 5 1 Visual inspection see Secti...

Страница 20: ...rize the tantalum capacitors correctly The long wire is PLUS C101 10 F 16V Tantalum pearl A B4 C102 1 F 35V Tantalum pearl B4 C104 10 F 16V Tantalum pearl B4 Mount the electrolytic capacitors correctl...

Страница 21: ...e test see Section 1 current should be abt 85 mA 4 Functional test After switching on a definite noise should be audible in the phones If the pin 20 to ground bridge is removed the noise should decrea...

Страница 22: ...und connections 4 pcs The following 5 diodes are in TO92 casings They look like transistor but only have to leads Mount according to the placement diagram D15 BB112 C4 D16 BB112 B4 D17 BB112 B4 D18 BB...

Страница 23: ...next turn must be clockwise to get the right geometry for Tr7 If you start front to back you must wind counter clockwise This rule is only for Tr7 Developers have their oddities too Wayne the construc...

Страница 24: ...turns Should calculations ever result in half turns you ignore the half turn and accept the slight asymmetry With unsymmetrical secondaries you put the secondary turns between the turns of the primar...

Страница 25: ...oss R 57 If Mr Ohms law is correct and we get 10 mA you should see U RxI 220R x 0 01A 2 2V If you measure much more ore less the current is not ok and you must change the Resistor assuming Mr Ohms Law...

Страница 26: ...Film E6 C2 10nF 103 D E7 C3 22nF 223 D7 C4 47nF 473 D7 C5 220pF 221 D7 C6 1nF 102 D E7 C7 10nF 103 C D7 C8 1nF 102 D6 7 C9 100nF 104 C D6 C10 100nF 104 E5 6 C11 100nF 104 B6 C12 220 F 16V rad B6 Now t...

Страница 27: ...ard This should be made from isolated wire in square E4 E5 and soldered in This section cannot be tested yet as the band set oscillator and the VCO of the band modules are needed Put the main pc board...

Страница 28: ...e is marked with a band or a dot The short leads are just long enough to con tact the corresponding holes in the PCB but long enough to go through the holes Because our PCBs are throughplated that doe...

Страница 29: ...g The activation pins vor each band module are on the main board Which one you use is on yours the bandmodules are all in parallel but only one is actually activated by its corresponding activation pi...

Страница 30: ...how to orient it Shown as the mixer as a transparent object in the drawing M1 Mixer TUF1 D3 4 Now a few diodes check their value with a loupe not to mix them up D4 BA479 E F3 D5 BA479 E3 D6 BA479 D3 4...

Страница 31: ...inding for coils too Cut a 15 cm piece of 0 2 mm wire AWG 32 and feed it through the pig nose as shown in the diagram One turn is done by going through one hole and back through the other Make three t...

Страница 32: ...st Section 9 1 Visual inspection see Section 1 2 Resistance test see Section 1 Bridge pin 47 to pin 18 Connect rotary encoder to the DDS Put pin 29 to 10 Volt see section 1 Put pin 19 to 10V Put pin 1...

Страница 33: ...k proceed to section 10 Section 10 SSB Generator and SSB amplifier P13 22K Piher PT6 lying A1 2 P14 50k Piher PT6 lying A1 P15 220K Piher PT6 lying B1 P16 2 2K Piher PT6 lying B1 X IC17 SSM2165 1 SO8...

Страница 34: ...n see Section 1 2 Resistance test see Section 1 3 Smoke test see section 1 Apply power as in section 1 test current about 240 mA 4 Functional test During the following test remove all bandmodules from...

Страница 35: ...A H4 x R41 4 7R SMD H4 x R42 4 7R SMD H3 x R43 1R SMD H3 R44 270R 1 Watt Metal film G4 R45 5 6R H1 2 R46 10R G H3 R47 10R H3 X R48 1R SMD 1206 H2 X R49 1R SMD 1206 H2 X R50 1R SMD 1206 H2 X R51 1R SMD...

Страница 36: ...fore mounting to remove the lacquer It is easier if the wires are long enough for them to be held firmly to the pc board during soldering Tr3 QRP double hole core G H4 Repeat this for transformer Tr4...

Страница 37: ...re well distributed over an Amidon FT50 43 Take note of the necessary geometry Dr8 Amidon FT50 43 F G1 That should be all The rest is just trimming Instead of another section test I recommend that the...

Страница 38: ...D E3 pin 33 E3 pin 34 E3 pin 35 10VS F3 pin 36 10V F3 pin 37 POut Anz F2 pin 38 E2 pin 39 10VE E2 pin 40 10VS E1 pin 41 Ue_ E1 2 pin 42 Us_ E1 2 pin 43 E F 1 2 pin 44 F1 2 pin 45 PWR ON E F1 pin 46 P...

Страница 39: ...e core of L7 higher or try a 22 H coil in parallel to L7 Re peat steps 5 6 and 7 8 The lower voltage on the output of IC12 corresponds to the LSB carrier frequency the higher one to the USB carrier fr...

Страница 40: ...ency range resolving and sensi tivity are always identical We were looking for a multiple usable counter which could be used as a single device but also as a module for a multi functional set Finally...

Страница 41: ...ming a frequency shift Counting mode In counting mode is made a difference between direct counting and coun ting with frequency shift Switching between these modes is possible without a reset of the c...

Страница 42: ...terminals must turned backward by 90 Backward means away from the labelled side IC3 7805 Socket IC1 74HC00 Socket IC2 16F84A D1 N4148 D2 1N4146 P1 1 x 10k Piher PT10 Resistor Array 1 5x4k7 CAUTION PI...

Страница 43: ...ether and tightened with screws and distance bolts to one unit Terminator J2 will be connected to 12 Volts and ground coming from the basic unit J4 is connected to the display backlight switch and J1...

Страница 44: ...lio trimmer violet C12 10nF C13 2 5 60pF Folio trimmer black C14 2 5 60pF Folio trimmer black C15 22nF C16 12pF C17 12pF C18 47nF C19 47nF C20 56pF C21 22nF C22 270pF on PC board soldering side C23 27...

Страница 45: ...0 45pF Folio trimmer 7mm violet C12 10nF C13 2 5 60pF Folio trimmer 7mm black C14 2 5 60pF Folio trimmer 7mm black C15 10nF C16 10pF C17 10pF C18 22nF C19 22nF C20 27pF C21 10nF C22 150pF on PC board...

Страница 46: ...35pF Folio trimmer 7mm brown C12 10nF C13 2 0 45pF Folio trimmer 7mm violet C14 2 0 45pF Folio trimmer 7mm violet C15 10nF C16 3 3pF C17 3 3pF C18 10nF C19 10nF C20 27pF C21 10nF C22 56pF on PC board...

Страница 47: ...1 8 30pF Folio trimmer 7mm Diameter red C12 10nF C13 2 0 35pF Folio trimmer 7mm Diameter brown C14 2 0 35pF Folio trimmer 7mm Diameter brown C15 10nF C16 2 7pF C17 2 7pF C18 10nF C19 10nF C20 27pF C21...

Страница 48: ...5pF C10 100pF C11 1 8 30pF Folio trimmer 7mm red C12 10nF C13 1 8 30pF Folio trimmer 7mm red C14 1 8 30pF Folio trimmer 7mm red C15 10nF C16 2 2pF C17 2 2pF C18 10nF C19 10nF C20 22pF C21 10nF C22 33p...

Страница 49: ...voltages Therefore they were substituted by ceramic or multilayer capacitors of high quality with a 1 10 raster and are soldered on the PC board directly Parts List Part Value Material C1 1000pF NP0...

Страница 50: ...SOLF DK1HE 40m 30m 20m 17m zur Antenne 15m 12m 10m Rel1 Rel2 Rel3 Rel4 Rel5 Rel6 Rel7 L1 L2 L3 L4 L5 L6 L7 L8 L9 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 Dr1 Dr2 Dr3 Dr4 C15 C18 C20 C22 C24 C27...

Страница 51: ...Version 13 September 2004 51 upper side lower side...

Страница 52: ...0dB 10dB S11 10Log P 50dB Marker f 10 965MHz Trace1 0 2dB Trace2 13 7dB Start 1MHz Stop 100MHz 101 points RFSim99 D Eigene Dateien _PM_Manuals SPEAKY TPF17m cct 10dB S21 10Log P 50dB 10dB S11 10Log P...

Страница 53: ...Version 13 September 2004 53...

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