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QRPproject Speaky Manual

5 band cw ssb psk transceiver
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DL-QRP-AG
Speaky 5 Band CW SSB PSK Transceiver
© QRPproject Motzener Straße 36-38 12277 Berlin http://www.QRPproject.de Telefon: +49(30) 85 96 13 23 e-mail: support@QRPproject.de
Manual: fiservice Peter Zenker DL2FI email:info@qrpidee.de
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  • Page 1 DL-QRP-AG Speaky 5 Band CW SSB PSK Transceiver © QRPproject Motzener Straße 36-38 12277 Berlin http://www.QRPproject.de Telefon: +49(30) 85 96 13 23 e-mail: support@QRPproject.de Manual: fiservice Peter Zenker DL2FI email:info@qrpidee.de...

  • Page 2: Table Of Contents

    Preface to building Section 11, TX driver and PA The Speaky Transceiver, preface Winding Instructio TR5 technical data Pin Placement Description of individual stages TrimPot Placement Band Switching Adjustments Local Oscillators Building the Frequency Counter RX Input Partlist Bandmodul 80m...

  • Page 3: Preface To Building

    The manual chairman of the local Berlin chapter of the As the Speaky is quite complex, all diagrams and parts lists are put DARC (German ham radio club), as I rather prefer doing something to just into a separate cover. This is to avoid flipping back and forth in the quarrelling.

  • Page 4: Technical Data

    (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 ( One of the main qualities of the transceiver is the ability to switch up to 5 Gonzales) as complement to the Miss Mosquita.

  • Page 5: Local Oscillators

    2. Local oscillator signals: quency range is the range of the DDS- VFOs (4,0- 4,5MHz) . The via L1 inductively coupled amplifier T1 serves to raise the output signal of the mixer to the required input level of the following 64: 1 divider, IC2. At the output of IC2 is some 66 kHs, to feed to the frequency/phase comparator of IC3.

  • Page 6: Rx If Section

    diode D13 and C81 to the input of the gate coupled IF preamplifier. By parallel coupling of JFETs T12-T13 a 50 Ohm termination is achieved for M1; the forward steepness of some 20 mS gives a stage amplification of some 15 dB. The gate coupling gives good large signal characteristics and reduces the risk of intermodulation.

  • Page 7: Sideband Oscillator

    proach. Unpleasant overloading effects from insufficient regulating voltages at low speech frequencies is thus minimized. The decay is regulated by R72. R76-R77 defines the attack. You can attach an optional 100 µA instrument at P5 to give a relative field strength indication. The combined IF/AF regulation is more than 90 dB!!! Input signals of S9+60dB are regulated distorsion free.

  • Page 8: Transmitter

    saturation 8. Transmitter: The transmitter is followed by a 3 stage Chebychef low pass filter with a cut The transmission frequency is obtained by mixing the 8 MHz signal with the off frequency of 33 MHz, to reduce harmonics in the BC/TV bands by more than 60 dB.

  • Page 9: Stabilization

    Author: Peter Solf DK1HE 11. 12. 2003 In the mean we designed a 3 digit frequency display for to the Speaky. This should be used if you use the very small tramp enclosure or a similar small...

  • Page 10: Building The Speaky

    1 Volt higher than the output voltage. Please take care to mount the correct regulator in As the Speaky is very small, yet not use SMD parts, most resistors are the correct place!! Many small signal transistors and voltage regulators are mounted vertically.

  • Page 11: Testing Section 1

    E/F1 3. Smoke test [ ] PIN47 If Speaky passed the resistance test, try applying voltage to the pc board. [ ] PIN18 Put between 10 and 15 Volts between pin 50 (PLUS) and pin 51 (GROUND). Use a laboratory supply with a current limiter, or put a 100 mA fuse in line.

  • Page 12: Section 2, T/R Switch

    Measure at test point, 47 = 10V +/- 5% Section 2 T/R Switching We begin with the trimming potentiometer P12, as mounting this is easier, Measure at test point U2 = 6V +/- 5% (Track from c129 field B1 to the when no other parts ar present.
  • Page 13 When no plus is found, the positive terminal is marked by a dash. The The resistors should pose no problem. longer lead allways shows the positive terminal. Tantalum capacitors are often used, when low leak currents are needed at high capacities. [ ]R104 [ ]R105 [ ]C128...

  • Page 14: Section 3 Dds Vfo

    10V when keyed. today measures capacitors to below 1 pF, this should pose no problem. (Multimeters are offered by QRPProject at 29 Euro). For a closer look to the function have a look at the logic plan in the sche- matic part.

  • Page 15: Assembling The S-Meter

    [ ]IC7 AT90S2313 (programmed) A/B7 [ ]St3 connector The following part is an integrated 25 MHz oscillator. Pin 1 is marked on [ ]St4 connector A/B7 the part and in the placement diagram. [ ]PIN7 A/B7 [ ]IC8 25MHz oscillator To use the section, the rotary encoder should be connected.

  • Page 16: Section 4, Af Amplifier

    With an absorbtion frequency meter (or a grid dip meter in absorbtion [ ]C125 10nF position), you should be able to demonstrate the function of the DDS. [ ]R79 E2/3 Methode 4: [ ]R80 Those who have allready built the speaky counter or own anothe counter [ ]R83 100k...
  • Page 17 [ ]R84 measure the current during this test. Without hum it should be about [ ]R85 60mA. If you touch PIN 33 it may increase to as much as 150 mA. [X] R86 SMD 0805 [ ] R87 3,3R Connect PIN 7 or PIN 8 of connector 4 to ground. If you tune up Trimpot [X] R88 4,7R SMD 0805...

  • Page 18: Section 5, Carrier Osc. And Switch

    Building Group 5, Carrier Oscillator and Switches [ ] P11 10K Spectrol 75H [ ] P10 10K Spectrol 75H The Neosid coil, used in this group is completely different from the known [ ] D29 BB109G / BB409 or equivalent Neosid cylinder coils.
  • Page 19 If you have no Scope, you may use the calibrated RF probe available from at the same time (LITTLE solder!). Don‘t QRPproject or another type of RF probe. push too hard. The leads become hot, and the plastic soft! Check for contact with an If everything is OK, proceed to Section 6.

  • Page 20: Section 6, Bfo If Amp, Agc

    Section 6 BFO, IF amplifier, AGC Mount the electrolytic capacitors correctly. The long lead is PLUS. [ ] C103 33µF/16V radial [ ] IC9 Socket 16 PIN A/B3 [ ] C107 10µF/35V radial B/C2 If you install the IC now, be very carefully. All IC pins must go [ ] C108 10µF/35V radial straight into the corresponding part of the socket.
  • Page 21 either by the word log or the letter B (2,2k B or 2k2B). Solder 3 pieces of wire, each 15 cm long onto the potentiometer. To prevent hum, twist the three wires. Test Section 6 1. Visual inspection (see Section 1) 2.

  • Page 22: Section 7 If Amplifier, If Filter

    Section 7 IF amplifier, IF filter [ ] D20 1N4148 Begin with the crystals. These are not the lowest parts, but in prototyping, [ ] D21 1N4148 we found the ground connection of the crystals difficult, when the other [ ] D22 BA479 parts were in place.

  • Page 23: Torroid School

    [ ] P4 10K Spectrol 75H winding geometry for each coil in the Speaky. A quick test winding will always make it possible to see, what the developer meant to be done. Now we encounter two news parts: transformers on Amidon toroid ferrite cores.
  • Page 24 as the smoke isn‘t exactly healthy! When smoke rises, move the solder blob Which end is cold? Cold in an RF sense, is close to ground. This doesn‘t slowly towards the end of the wire, till you have soldered about 1 cm of the necessarily mean galvanically connected to ground.
  • Page 25 Xtal controlled testoscillator / Xtal Tester you can order from 2. Resistance test (see Section 1) QRPproject. If you have a variable transmitter, you can use that. Connect Now install R57, you remember, this resistor helps optimizing the intermo- it to a dummy load at low power, and tune it to 7.999 MHz.

  • Page 26: Section 8 Pll

    Section 8 PLL [ ] R4 4,7K E6/7 [ ] R6 1,5K C/D 6/7 In this section we will once more use a Neosid Bobin core. [ ] R7 D6/7 [ ] R8 [ ] R5 100K [ ] C1 0,22µF Film [ ] C2...
  • Page 27 careful not to put it in at a wrong angle. Solder the coil i place and put on this parts by breaking them along the lines. the covering core. The can should be mounted loosely, not yet soldered. Band module 40 Meter [ ] P1 250R Piher PT6 lying...
  • Page 28 [ ] R11 marked with a band or a dot. The short leads are just long enough to con- [X] Dr1 left out tact the corresponding holes in the PCB, but long enough to go through [ ] Dr2 22µH SMCC the holes.
  • Page 29 IC1 pin 6. With trimmer P1 set it to some 250 mVpp. If you use an [ ] C23 150pF on solder side 150p/n15 RF probe, set it to 100 mVeff. With the calibrated probe of QRPproject you have to adjust a value, which you can take from the SW-Calibration-Curve Now we just have to put in the two connec- for a nominal value of 250 mVss.
  • Page 30 Section 9 RX/TX Mixer, Low pass filter [ ] D11 1N4148 [ ] D12 1N4148 The following transistors may easy be damaged by ESD. Dont SMCC RFCs are well known by now forget to discharge yourself, use a potential free soldering station.
  • Page 31 [ ] C79 47nF the other diagrams for transformers, this drawing also contains a dot. This [ ] C80 47nF is always the beginning of the winding (for coils too). Cut a 15 cm piece of [ ] R17 1,5K 0.2 mm wire (AWG 32), and feed it through [ ] R18 1,5K...
  • Page 32 Now follows another transformer, this time on an FT37-43 core. The primary [ ] RL1 DIL Reed relay 12V 1x Changer F/G 2/3 has 8 turns, the secondary 4. Mounting according to the layout drawing. [ ] J1 3 pin Connector Test Section 9 1.

  • Page 33: Section 10, Ssb Generator/Amp

    Generate a strong signal at 7.030 MHz You may use any RF Generator or the Section 10 SSB Generator and SSB amplifier little Xtal Generator from QRPproject. It is also possible to use a station transmitter wirh a DummyLoad (Attention, do not connect the Transmitter...
  • Page 34 4. Functional test [ ] R116 During the following test remove all bandmodules from their slots. [ ] R117 Add all Voltages to your speaky [ ] R118 [ ] R119 120R [ ] Connect pin 53 to ground (That is the PTT pin)

  • Page 35: Section 11, Tx Driver And Pa

    Section 11, Transmitter driver and PA [ ] R38 [ ] R39 [ ] R40 820R (adjust for Iquiesc. T5~ 100mA) H4 [ ] P1 100R 0,5W Cermet lying RM 5x10mm F/G3 [x ] R41 4,7R [x ] R42 4,7R The following transistors may easy be damaged by ESD.
  • Page 36 number at the leads in the drawings. Solder the ends before mounting, to Cut a 15 cm piece of 0.2 mm wire (AWG 32) remove the lacquer. and feed it through the pig nose as shown in It is easier if the wires are long enough for them to be held firmly to the pc the drawing.
  • Page 37 Now the transformer should look switches and the pc board. Mount the pc board BELOW the frame, to leave like the following drawing. To the enough room for the peripheral parts. left two wire ends, to the right three, counting the twisted part as one wire Solder all 5 ends and mount the transformer.

  • Page 38: Pin Placement

    Pin placement Speaky, placement diagram pin 38 pin 39 +10VE PIN 1 pin 40 +10VS PIN 2 pin 41 E1/2 PIN 3 pin 42 E1/2 PIN 4 pin 43 E/F 1/2 PIN 5 pin 44 F1/2 PIN 6 VPreSel pin 45...

  • Page 39: Adjustments

    GRAM. Voltmeter and notice the value. Value A: [ 8. Switch SPEAKY to SSB 8. Turn P11 to the right away over the maximum filter roof until a RF- Voltage of one fifth of the maximum value is reached again.

  • Page 40: Building The Frequency Counter

    Now the adjustments of the SSB stage are finished. Building the Frequency Counter Adjustments of the Band Modules Introduction Frequency counters using PIC are already known a long time in different The different band modules will be now adjusted, as described for the 40 m forms.
  • Page 41 and controls and the NJQRP Club, contributing big ideas for the software without a reset of the counter. By that it is possible to change the display too. between direct frequency and frequency shift using an optional switch or relay. An example for such an application would be a superhet receiver in Our kit contains the complete hardware including a programmed micropro- combination with a straight circuit receiver.
  • Page 42 Now, the shift is programmed and the processor changes to programming a square. Keep attention to place them on the PCB in the right way. multiplicator. Speaky doesn’t need this. So we let it at a value of 1 and go ahead storing it.
  • Page 43 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 is the RF input-termination. If +12 Volts are connected, first contrast of the display should be adjusted using the trimming potentiometer that way, that the characters are readab- le pretty good.

  • Page 44: Partlist Bandmodul 80M

    Parts list for SPEAKY 80 m Band Module 68pF 330pF 2,0-45pF Folio trimmer (violet) BF199 10nF BF981 2,5-60pF Folio trimmer (black) 2,5-60pF Folio trimmer (black) BA479 22nF BA479 12pF BB109G o.ä. 12pF 1N4148 47nF BA479 47nF BA479 56pF BB112 22nF...

  • Page 45: Partlist Bandmodul 40M

    Parts list for SPEAKY 40 m Band Module 47pF 220pF 2,0-45pF Folio trimmer 7mm (violet) BF199 10nF BF981 2,5-60pF Folio trimmer 7mm (black) 2,5-60pF Folio trimmer 7mm (black) BA479 10nF BA479 10pF BB109G or equivalent 10pF 1N4148 22nF BA479 22nF...

  • Page 46: Partlist Bandmodul 20M

    BF199 2,0-35pF Folio trimmer 7mm (brown) BF981 10nF 2,0-45pF Folio trimmer 7mm (violet) BA479 2,0-45pF Folio trimmer 7mm (violet) BA479 10nF BB109G or equivalent 3,3pF 1N4148 3,3pF BA479 10nF BA479 10nF BB109G or equivalent 27pF BB109G or equivalent 10nF BB109G or equivalent 56pF on PC board soldering side BB109G or equivalent 56pF on PC board soldering side...

  • Page 47: Partlist Bandmodul 15M

    Parts list for SPEAKY 15 m Band Module 27pF 150pF 1,8-30pF Folio trimmer 7mm Diameter (red) BF199 10nF BF981 2,0-35pF Folio trimmer 7mm Diameter (brown) 2,0-35pF Folio trimmer 7mm Diameter (brown) BA479 10nF BA479 2,7pF BB109G or equivalent 2,7pF 1N4148...

  • Page 48: Partlist Bandmodul 10M

    Parts list for SPEAKY 10 m Band Module 15pF 100pF 1,8-30pF Folio trimmer 7mm (red) BF199 10nF BF981 1,8-30pF Folio trimmer 7mm (red) 1,8-30pF Folio trimmer 7mm (red) BA479 10nF BA479 2,2pF BB109G or equivalent 2,2pF 1N4148 10nF BA479 10nF...

  • Page 49: The Low Pass Filter

    The low pass filter was developed especially for the „Tramp-8“ and the 22nF 0805 „Black Forest Transceiver“ of the DL-QRP-AG and is consequently used for 22nF 0805 the SPEAKY too. The parts for the low pass filters are selected for an output 22nF 0805 power up to 15 Watts. 22nF 0805...
  • Page 50 Rel1 Rel2 Tiefpassfilter C3 C4 Rel3 Rel4 von TRX-Output zur Antenne Rel5 Rel6 Rel7 13.04.2002 SOLF DK1HE...
  • Page 51 upper side lower side...
  • Page 52 RFSim99 - D:\Eigene Dateien\_PM_Manuals\SPEAKY\TPF80m.cct RFSim99 - D:\Eigene Dateien\_PM_Manuals\SPEAKY\TPF17m.cct 10dB 10dB 10dB 10dB 10Log(P) 10Log(P) 10Log(P) 10Log(P) -50dB -50dB -50dB -50dB Start:1MHz Start:1MHz 101 points Stop:100MHz 101 points Stop:100MHz Marker: f=4.169MHz Trace1:-0.2dB Trace2:-14.2dB Marker: f=19.055MHz Trace1:-0dB Trace2:-25.9dB RFSim99 - D:\Eigene Dateien\_PM_Manuals\SPEAKY\TPF30m.cct...

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