Users Manual. 28 MHz < - > 144 MHz Transverter LT 200

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1 Users Manual 28 MHz < - > 144 MHz Transverter LT 200

2 Inhaltsverzeichnis 1. PREFACE SAFETY INSTRUCTIONS ANSCHLUSS FUNCTIONAL DESCRIPTION INITIAL OPERATION BLOCK PICTURE TECHNICAL DATA NOTES ON ECOLOGY SERVICE & CARE SAFETY & WARRANTY DECLARATION OF COMFORMITY CONTACT...12 Seite 2 von 12

3 1. PREFACE Congratulations on your purchase of this latest product from SSB-ELECTRONIC. This tranceiver, from 10m to the 2m band, is a German quality product. It was developed and manufactured in Germany. The LT-200 distinguishes itself by the following product advantages: All Mode operable (all modulation and operating modes) Operation with tranceivers with seperate TX and RX transverter connections Very good TX and RX selection High IIP and OIP values of the receiver 25 W RF Outputpower RF output adjustment via the front panel Presetting of the maximum output power Split operation in 2m band Small dimensions Attention: Before you start operating the LT-200, please read this manual carefully. Do not allow children to play with this device. Operation of this device is allowed only by persons with a valid radiocommunication license. Preserve this manual carefully. It contains important operational instructions for the LT SAFETY INSTRUCTIONS The LT-200 requires a stabilized DC supply of 13.8 V (DC V) with a minimum current of 6 A. For proper operation, make sure you have the correct polarity! Never supply the device with alternating voltage or insufficient stabilized DC voltage! Do not expose the LT-200 to rain, snow or other liquids, or place drinks on the unit. The heat sink must never be covered, as this would prevent the necessary air circulation. The heat sink becomes hot during continuous operation (e.g., FM, WSJT operation). This is not a malfunction. Do not unscrew the LT-200. No recyclable parts are included. You would lose your claim to warranty. The ambient temperature should not be below -10 C or above + 50 C. The operating temperature is 0-40 C. Relative humidity, non-condensing 0-80%. For operation with a downstream power amplifier, it is absolutely necessary to use a correctly connected sequence control (for example, SSB-Electronic DCW 2004 B item 1025, etc.). Seite 3 von 12

4 The LT-200 has a TX connector and RX connector for the circuitry with the transceiver. Ensure that the transceiver's power output to the transverter jack is never more than 100 mw before performing the power setting on the LT-200. The PTT control of the LT-200 is time-controlled via the transverter's PTT output, or from the sequencer via a shielded control cable (chinch-cable) Caution: When operating with a downstream power amplifier, set the output power of the LT-200 much lower than the maximum input power of your power amplifier, otherwise it can also be damaged! Although the device is operated with low voltage, much higher voltages can occur at the antenna output of the device and at the antenna. Please keep a safe distance from the antenna during transmission and never stay in the direct antenna beam. Never touch the antenna elements during transmission. Burns and electric shocks can result! All components of a transceiver must be adequately earthed. An installation without good connection to the earth potential, especially in the mountain areas, can be electrostatically dangerous. Charging voltages can also result in electric shock, malfunction, or destruction of your equipment. Always stop operation during thunderstorms, for safety reasons. Take adequate shelter during these conditions and never stay near the installation or antenna. The operator is in any case responsible for the proper set-up and operation of his system! Seite 4 von 12

5 3. Connection For the basic connection please refer to the following illustrations. We will give you tips on the usable cables and commissioning in the following chapters. Figure 1: Connecting the LT-200 Figure 2: Connection of the LT-200 in a system with a power amplifier Seite 5 von 12

6 Figure 3: Connection of the LT-200 in a plant in split mode with a power amplifier without coaxial relay. 4. FUNCTIONAL DESCRIPTION In the design of the LT-200, special emphasis was placed on a large-signal, low-noise receiver with a very low pass-through gain and a powerful transmit converter with an intermodulation-poor transmission signal. State-of-the-art components and the unique technical solutions, enabled a compact design and the achievement of outstanding parameters. The LT-200 is designed for interconnection with transceivers that have a separate TX port for transverter. The phase noise-free and very frequency-stable overtone oscillator is built in a temperature-stabilized module of 60 degrees. After reaching the operating temperature, the oscillator heater is supplied with short current pulses and the temperature is precisely stabilized with an electronic circuit. The frequency accuracy of the local oscillator is adjusted with a 10-turn potentiometer on the left side of the LT-200. This sets the frequency matching of the conversion precisely. In the preliminary stage of the receiver converter, a power LDMOS transistor with a very high OIP3 value and a relatively low noise figure is used. The mixer of the transverter is constructed as a tandem of two active high-performance mixers. This mixer is used without transceiver switching for the receiving part and for the transmitting part of the transverter. An amplifier stage after the active mixer, which would increase the OIP3 value to 40 dbm, was dispensed with, since only the input IP3 value for the large signal strength is decisive and an increased gain of the transverter would significantly reduce the receiving comfort. Seite 6 von 12

7 On the sending side, the maximum desired output power of the LT-200, is adjusted with an attenuator to match the control performance of the transceiver. The potentiometer for adjusting the output power is located on the front plate, easily accessible. The power setting range is 20 db, which is e.g. with a preset maximum output power of 10 W, enables a stepless reduction of the output power to 100 mw. After the mixer of the transmitter converter, a four-circuit bandpass filter and blocking for the oscillator and mirror frequencies follows. The downstream MMIC amplifier sends the signal to the driver, which controls the power amplifier. The driver and the output stage are implemented with LDMOS transistors. The power amplifier has been equipped with a protective circuit which, with a VSWR of 1:2 at the maximum output power, safely switches it off. If this safety circuit has been activated, the red light (SWR) on the front of the device is indicated to the operator. The transmission converter of the LT-200 produces a high-quality signal, with lowest distortion and very good over- and undershoot suppression. The transverter has two RF jacks for connecting the shortwave transceiver. The RX N socket is connected to the receiver input (ANT socket) of the transceiver via a coaxial cable. The transverter output of the transceiver (low power output) is connected to the SMA socket TX. The SMA socket PA OUTPUT is for the transmit output and the SMA socket ANTENNA RELAY is intended for the connection of the transmitting part to the internal antenna relay. When using an antenna cable for TX and RX, the PA-OUTPUT and ANTENNA RELAY connectors are connected via a short coaxial cable. In a one-cable system, preamplifiers with relay switching must be used. We recommend SP-200 (SSB item number 1032) or MHP-200 (SSB item number 1062), depending on the transmission power of the system. The preamplifier used can also be deactivated with the PREAMP switch of the LT-200 in systems without a power amplifier and with the PREAMP switch in the control system for systems with power amplifiers. Split operation: After removal of the coaxial connection between the SMA sockets PA OUTPUT and ANTENNA RELAY, the LT-200 is ready for split operation, see Figure 3. In split operation, you may use any power amplifier without coaxial relais switching and preamplifier with or without coaxialrelay switching. A high-performance coaxial relay (e.g. AS-3000 SSB item number 5059) is mounted near the antenna. From there, two seperate coaxial lines lead to the station. The coaxial cable in the transmission branch should be absolutely low-noise! We recommend the use of Ecoflex 10 or Ecoflex 10 Plus, or Ecoflex 15 or Ecoflex 15 Plus. When a receiving preamplifier is used on the antenna relay, a thinner coaxial cable may be used e.g. Aircell 5 or Aircell 7 for the receiving branch. In split mode, the signals of the receive branch can be distributed to several receivers. If a reception preamplifier (for example SP-200 SSB-Item No or MHP-200 SSB-Item No. 1062) is used, this can be controlled and supplied directly by the LT-200 (Figure 1). The PREAMP switch is used to enable and disable the preamplifier. Seite 7 von 12

8 In the case of transmitter configurations, as shown in FIGS. 2 and 3, the preamplifier is fed from the sequence control. A preamplifier without coaxial relay switching (for example LNA-200 SSB-Art.Nr.1011-NF) can also be used in the split mode (Figure 3). In this case, the operation without the preamplifier is not possible and the LNA supply must remain activated during the sequence control. 5. INITIAL OPERATION Place the LT-200 in a location with good air circulation near the transceiver. Implement the wiring of the system, depending on the components used, as indicated in Figures 1 3. To prevent impedance transformation in the system, avoid lambda ¼ cable lengths (or odd multiples) and calculate the length of the cables according to the following formula: Lambda : 2 x shortening factor x n (number n = ) For the internal coaxial connections between the components of the system we recommend the use of coaxial cables of type Aircell 5 or Aircell 7. Avoid short-circuiting whilest plug-mounting connector. Be particularly careful here! Note: Prefabricated coaxial cables in certified HF quality can be ordered at or for your system. We guarantee fastest delivery in perfect HF quality! Check the cabling of the system. Connect the LT-200 to the power supply of the transceiver or an external power supply. Pay attention to the correct polarity! (Wrong polarity will destroy the transient fuse!). The LT-200 is supplied with minimum adjusted output power. First of all check the PTT function without output power! During the PTT test, the transceiver is switched to CW mode. The PTT button (e.g., foot pedal) is operated. The "TX" indicator lights of the LT-200, the "TX" of the transceiver and the "TX" control of the power amplifier must light up. Setting the output power: Connect a power meter to the antenna output of the system. Adjust the RF POWER setting on the front panel of the LT-200 to the maximum (right-hand stop 0 db), then press the PTT button on FM or PTT, then press the Morset button on CW and carefully adjust the power setting (Potentiometer, device lying on the back ) Clockwise to set the maximum desired output power of the system. Seite 8 von 12

9 ATTENTION: When using a downstream power amplifier, make sure that the power amplifier is not driven too high. Setting the frequency accuracy: Turn on the LT-200 and the transceiver and heat it about 20 minutes before the oscillators of the transceiver and the transverter reach their operating temperature. Switch the transceiver to CW mode. The frequency of the transceiver, e.g. to exactly 28.2 MHz. The output power of the LT-200, with the power setting on the front panel, must be set to minimum (left stop, -20dB). Insert an attenuator (for example, UNAT 20 N, SSB Item No. 5083) between the LT-200 frequency counter and antenna output. Then press the PTT button, then press the Morset button and use the potentiometer on the left side of the LT-200 to set the frequency of exactly 144.2MHz on the frequency counter. Commissioning is now complete. Seite 9 von 12

10 6. BLOCK PICTURE Seite 10 von 12

11 7. TECHNICAL DATA General Operating voltage : 13,8 V DC (12 bis 14 V) Electricity quartz oven (Imp. < 0,5 sec): 1,4 A Power consumption reception : 0,6 A Power consumption Transmit without 1,2 A control: Power Consumption Transmission at 20 W 3,0 A PEP : Transmission at 20 W CW, FM, WSJT: 4,2 A Sending at 25 W CW, FM, WSJT : 5 A Dimensions (Housing without sockets and 234 x 170 x 60 (LBH) mm actuator): Weight: 2,2 kg Housing: Aluminum housing Frequency stability : +/-0,5 ppm Adjustable frequency accuracy : +/- 500 Hz Offset ZF RX connection 10m : N-Sochet 50 Ohm (RX) ZF TX connection 10m: SMA- Socket 50 (TX) Send converter output : SMA- Socket 50 (PA OUTPUT) Antenna Relay TX input : SMA- Socket 50 (ANTENNA RELAIS) PTT input : Cinch- Socket, Contact at mass Antenna connection : N- Sochet 50 (ANT) Reception converter HF-Range: MHz ZF-Range: MHz Noise measure : 3,2 db Continuous gain : 16 db RX output IP3 : 30 dbm RX input IP3 : 14 dbm Mirror frequency suppression: 90 db RX input VSWR : 1:1,4 Seite 11 von 12

Transmission converter ZF-Range: 28-30 MHz HF-Range 144-146 MHz IF input power: 0,1-100 mw Output power range : 20 db Max.

12 Transmission converter ZF-Range: MHz HF-Range MHz IF input power: 0,1-100 mw Output power range : 20 db Max. Output power : 25 W PEP (SSB); 25 W (FM, WSJT, CW) IM3 of the output signal : 40dB (bei 20W PEP) Harmonic suppression : 60 db Mirror frequency suppression : 100 db 8. NOTES ON ECOLOGY Electric devices must not be disposed with household garbage. These must be disposed in seberately arranged waste collection places, or at the sales point. Materials of packaging must be seperated and disposed through the household garbage. 9. SERVICE & CARE Do not opern the device. The device does not contain any servicable parts. If there are questions regarding technical support, or service, please contact us: technik@ssb-electronic.de 10. SAFETY & WARRANTY This product is not intended for children. The packaging material and the device could contain small components, wich could be swallowed. Repais must only be executed by specialised personnel. In case of opening of the device, or improper use, any right of warranty extinguishes. A warranty is not given. The warranty of law of the federal republic of germany applies. This device meets the low voltage guideline 2006/95/EG, also 2004/108/EG, 2002/96/EG, 1999/44/ E 11. DECLARATION OF COMFORMITY With this we state that the above-named product meets all relevant specifications in the field of application of guidlines 73/23/EWG, 89/336/ EWG and 99/5/EG of the council. Manufactorer: SSB-Electronic GmbH, Am Pulverhäuschen 4, Lippstadt Technical changes reserved. Contents of this document are intellectual property of SSB-Electronic GmbH. Duplication is only allowed with explicit, writen licence. 12. CONTACT Telefon: Internet: technik@ssb-electronic.de +49 (0) Seite 12 von 12

User manual. 28 MHz < - > 144 MHz Transverter ZST 200

User manual. 28 MHz < - > 144 MHz Transverter ZST 200 User manual 28 MHz < - > 144 MHz Transverter ZST 200 Table of contents 1. Preface...3 2. Safety instructions...3 3. Connection...5 4. Connection with ZS-1 transceiver...7 5. Functional characteristics...9