Linear-Transverter

If you want to get serious with weak-signal DX or contesting on VHF, you have few other options than using a transverter with a HF rig as a driver. The VHF/UHF allmode radios of former times have vanished from the market due to lack of demand, the current combination HF/VHF radios are fantastic allrounders but are usually not up to par with the highest performance values of pure VHF radios.

The transverters offered on this page can be used with nearly any HF transceiver. This gives the user the liberty to design his or her station according to individual demands and budget. Of course modern SDR transceivers are exceptionally well suitable for transverter operation, for example because you can watch the entire DX segment of the band at a glance.

ZST-200 & LT-200 VHF Transverter Nouveau

VHF Transverter ZST-200 VHF Transverter ZST-200

The ZST-200 (LT-200) device is a transverter for the 2m VHF band. The IF band is 10 28 to 30 MHz which allows the use of practically any all band HF transceiver. The ZST-200 (LT-200) works as a linear transverter, it can be used with any mode, regardless if you want to do FM, SSB, CW or digimodes. The quality of a transverter is measured - among others - on the frequency stability, on the large signal handling capabilities and the low generation of spurious signals (inearity). In this regard both transverters show best values as can be seen in the data sheets. A high transmit power was not a design goal, because most serious DXers and contesters use external power amplifiers anyway. The high frequency stability of ± 0.05 ppm is achieved by using a temperature controlled crystal oscillator (TCXO).

Hooking up the ZST-200 (LT-200) to any HF transceiver is very simple, you just need a PTT keying line besides the HF cable. To maintain the correct keying sequence the PTT is keyed at the transverter, for example with a foot switch. A more complex sequencer (like the DCW-2004) would be required when using a pre-amp or a power amplifier. The transverters can also be used with transceivers which have separate TX and RX branches for split or full duplex operations. The maximum transmit power is 25W, the power supply is done over a 13.8V supply at max. 5A current consumption. A DC cable is included.

The difference between the two models ZST-200 and LT-200 is the maximum allowed input power to the transverter. The ZST-200 accepts 1 to 5W transmit power at it's input, the LT-200 only 0.1 to 100 mW. Therefore the LT-200 can only be used with HF Transceivers which offer a special transverter out put (many do). The benefit of this approach is a much cleaner transmit signal, because you eliminate the power amplifier of the driving HF rig. Otherwise the two transverter as identical.

ZST-200 rear ZST-200 rear
Dates techniques ZST-200 & LT-200 VHF Transverter
ZST-200 LT-200
General Data
Tension d'alimentation 12 – 14 V
Consommation maxi de courant 5 A
Dimension 234 x 170 x 60 mm
Poids 2.2 kg
Stabilité fréquence ± 0.5 ppm
Connecteur IF 10m N prise
Connecteur Antenne N ##buchse
Down Converter
Gamme de fréquence VHF 144 – 146 MHz
Gamme de fréquence ZF 28 – 30 MHz
Facteur de bruit 3.2 dB
16 dB
Rx IP3 Sortie 30 dBm
Rx IP3 Entré 14 dBm
Affaiblissement fréquence conjugée 90 dB
Rx Entré 1.4:1
Up Converter
Gamme de fréquence VHF 144 – 146 MHz
Gamme de fréquence ZF 28 – 30 MHz
Puissance d'entrée 1 – 5 0.001 – 0.1 W
Gain 20 dB
Puissance maxi (sortie) 25 W
IM3 Sortie 40 (@ 20W) dB
Harmonics Suppression 60 dB
Affaiblissement fréquence conjugée 100 dB

  • Included in the shipment is:
  • ZST-200 or LT-200 VHF Transverter
  • DC Cable
  • Semi-Rigid connector SMA
  • CD-ROM with PDF manual
Référence
ZST-200 ZST-200 VHF Transverter 25W, High Input 1199.00 € Acheter Nouveau Pas de stock, uniquement sur commande, livraison en 7 jours.
LT-200 ZST-200 VHF Transverter 25W, Low Input 1199.00 € Acheter Nouveau Pas de stock, uniquement sur commande, livraison en 5 jours.
Info frais de port
Downlaod: ZST-200 Operating manual english (PDF, EN, 2MB)
Download: ZST-200 Leaflet english (PDF, EN, 50 KB)

Downlaod: LT-200 Operating manual english (PDF, EN, 1.4MB)
Download: LT-200 Leaflet english (PDF, EN, 50 KB)
ZST-200 Station ZST-200 Station

Accessoires pour VHF/UHF Transverter

Référence
ZS-1 SDR-Transceiver as driver 1349.00 € Acheter En stock, expedié sous 1 à 2 jours.
40075.15 Cinch cable for PTT 150cm 1.40 € Acheter En stock, expedié sous 1 à 2 jours.
26132 DCW-2004 Sequencer 249.00 € Acheter En stock, expedié sous 1 à 2 jours.
Info frais de port