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 Download 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 :

 449,00 (excl. VAT)

Out of stock

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 manual:

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:

All documentation can be found in the Downloads section.


Additional information

Weight 1000 g
Dimensions 18 × 18 × 6 cm


There are no reviews yet.

Be the first to review “JUMA TX-500 | 60W | 500KHz transmitter”

We use cookies to give you the best online experience on this website, by agreeing to accept their use here, in accordance with our policy.

Privacy Settings

When you visit any website, this can store or retain information in your browser, normally used as cookies. You may limit or control these personal cookie services here.

    Your Cart
    Your cart is empty

      Hi there,

      please choose one of our colleagues below, to request the information you need, or send us an email to You can also use the contact form on the "Contact" page. We are available ONLY  Monday to Friday, from 9-17h. Thank you!