roWaves Technologies

Certified Company ISO 9001-2008

JUMA TX-500 | 60W | 500KHz transmitter

High-performance tested & calibrated, small-sized with digital control, 60W/CW CMCD transmitter for 630m band (500KHz). Works as beacon, high dynamic Rx up-converter included, for a 80m receiver. Firmware programmed: v.112. Designed by the JUMA® team (OH2NLT & OH7SV, Manufactured, assembled, tested & calibrated by us @ roWaves Technologies, in Sibiu, Romania.
✓ CE certified ( CE certificate can be sent upon request)
✓ 1 year warranty / free technical & limited support via e-mail & WhatsApp
✓ how to use the TX-500 with a receiver or how to operate it? See FAQs section
roWaves Technologies owns the legal rights to manufacture and market this transmitter.

➡️ Main features:
  • – output power: 60W key down CW
  • – adjustable gain (MIN: 4W / LOW: 15W / HIGH: 35W / MAX.: 60W)
  • – frequency range: 450 kHz…550 kHz (step 10 Hz, 1 Hz with Windows control software)
  • top quality keyer, speed range of 1…50 wpm (min. 0.1 wpm with serial control)
  • – clickless CW keying shape / T/R switch with CW speed adaptive release delay
  • – Rx preamplifier &  Rx up-converter from 500 kHz to 3.5 MHz
  • – stand-alone beacon mode
  • – Windows software for PC control (v.1.21)
  • – supply voltage range: 12…15Vdc @ 5A
  • – dimensions: approx. 18 x 12.4 x 6cm, ~ 1kg weight
➡️ Configurable features:
  • – RX preamplifier (OFF, 10 dB, 20 dB)
  • – RX converter ON/OFF
  • – sidetone frequency/ON/OFF
  • – adjustable SWR protection, individual level for each power
  • – Keyer type (Dot priority, Iambic, Straight and Beacon mode)
  • – LCD brightness and contrast adjustment
  • – serial communication settings
➡️ Connectivity:
  • – power supply nominal 14 VDC / 5A (Standard DC socket)
  • – antenna 50 ohms (BNC connector)
  • – RX 500 kHz or 3.5 MHz, 50 ohms (BNC connector)
  • – paddle/straight key (3.5 mm jack)
  • – RS232 for firmware/beacon programming (3.5 mm jack)
  • – external PTT in/out (3.5 mm jack)

Below you can find complete technical specifications, documentation (diagrams, measurements etc.).
Shipping safe with DHL. See the estimated shipping cost to your country HERE.
Price :

2.245,00 lei (excl. VAT)

1 în stoc

(*Ships in 1-2 business days. VAT amount and the exact shipping cost will be calculated during checkout.)
ParameterSymbolValueUnitsConditions / comments
Frequency rangeFop.450...550KHz
Standard RF powerPnom60
Wkey down
Gain / power settingsGstep4
Operating modesOPMCW-CMCD (current mode class D)
Harmonic outputsPh1f (carrier)
0dB @ 90W
-62.7dB @ 32uW
-60.7dB @ 51uW
-89.7dB @ 64nW
-77.7dB @ 1uW
-110.7dB @ 0.5nW
Supply voltage rangeVdc range12 ÷ 15Vdcvoltage monitoring on LCD
Nominal voltageVdc14Vdc
Max. supply voltageVdc max.15Vdcdo not exceed this value!
Nominal currentIdc5Adc@ 60W
FW versionFW1.04-current firmware installed
LCD2 x 16CHdisplays:
- output power / SWR
- supply voltage
- drain current
- CW speed (WPM)
- state (STBY, OPER, TX)
- frequency with 5 digits e.g. 501.00 kHz
Mechanical dim.L x W x H180 x 124 x 60mmwith case
Weightg1000gwith case

TX-500 block diagram:

Beacon programming instructions:

Windows control software quick guide:

Beacon operation:

Antenna application note:

Digital Control Module schematic, part 1: part 2:

RF Module / PA stage schematic, part 1: part 2:

Assembly Image:

Q: …



Informații suplimentare

Greutate 1000 g
Dimensiuni 18 × 18 × 6 cm


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