TWTA-1-120

Magnetic Materials - Ferrites & Iron Powder

TWTA-1-120 | 1W | 30dB | Low Noise Amplifier

JUMA© PA-100D, 100W* HF Power Amplifier
High-performance, fully assembled, tested & calibrated, small-sized Low Noise Amplifier capable of 3MHz to 100MHz operation.

• gain: 10dB (typ.) @ 20dBm input
• wideband operation: 3MHz ÷ 100MHz
• IIP3: +26dBm typ.
• OIP3: +35dBm typ.
• max. power: 1W/30dBm @ Vce=12Vdc
• supply voltage: 12 to 15Vdc max.
• supply current max: 150mAdc

PA-100D

Magnetic Materials - Ferrites & Iron Powder

JUMA© PA-100D, 100W* HF Power Amplifier

JUMA© PA-100D, 100W* HF Power Amplifier
High-performance, fully assembled, tested & calibrated, small-sized, digital control, min.100W* HF Linear PA. Auto band detection possible with Freq. Sense Mode or Digital Band Switch, for most QRP HF transceivers.

• min. 100W with 14Vdc/18A power supply
• silent cooling fan noise (25.6dBA)
• adjustable gain (2W-10W drive), memorized on each band with 2dB steps (G1-G4)
• protection & optical alarm for: over-temperature, over-current, exceeded SWR
• power supply cable included (25Adc fused)
• dimensions: approx. 19 x 17.6 x 6.6cm, 1.2kg weight

ROW-DL25

Magnetic Materials - Ferrites & Iron Powder

25W QRP dummy load | 500MHz

(tr)uSDX 5-band Multimode QRP TRx – KIT
General purpose dummy load for HF-VHF, up to 25W (max. 30s). Equipped with Schottky diode voltage detector, for the conversion of the actual value measured using a multimeter, into RF power.

• 25W max. 30s
• 50Ω
• D.C. to 500MHz
• VSWR: 1.96@10MHz / 1.46@440MHz
• dimmensions: 80×30×10mm

(tr)uSDX

Magnetic Materials - Ferrites & Iron Powder

(tr)uSDX 5-band Multimode QRP TRx

(tr)uSDX 5-band Multimode QRP TRx – KIT
From original creators of (tr)uSDX: Guido-PE1NNZ & Manuel-DL2MAN, we are offering the KIT and assembled version of this beautiful 5-band, pocket-size, multimode QRP SDR TRx.

• 80/60/40/30/20m bands
• min. 4W (@ 12Vdc) & 65-80% efficiency
• CW/LSB/USB/AM/FM
• electret condenser MIC on board
• OLED display 128X64
• dimensions: 90X60X30mm / 140g

JUMA ASW-5

Magnetic Materials - Ferrites & Iron Powder

JUMA ASW-5 Automatic Antenna Switch

(tr)uSDX 5-band Multimode QRP TRx – KIT
JUMA ASW5 is an automatic BCD controlled antenna switch for ten HF bands and five antennas. It is designed to stand legal power levels.

• compatible with BCD data from Yaesu / Elecraft TRXs
• 50mA@12VDC, fed via the DC or DB9 connector
• each band can be hardware configured by means of the ten DIP switches
• can be used also as manual antenna switch by simply turning the rotary switch
• coaxial cable center wires are grounded for the antennas which are not in use and all the antennas are grounded when a valid band data is not available

uSDX

Magnetic Materials - Ferrites & Iron Powder

uSDX Monoband Multimode QRP TRx, 3W

(tr)uSDX 5-band Multimode QRP TRx – KIT
This is the rev. 1.01 PCB, FW is R1.02i, designed by Barb, WB2CBA. uC is pre-flashed, male pin-headers for LPF installation are soldered on-board (assembled) or in the package (kit). 74ACT00 IC on the PCB installed and FST3253 is soldered already on all PCBs (kits included).

• KITs and assembled
• monoband, LPF PCB is INCLUDED!
• 3W RF out (@12Vdc)
• CW/LSB/USB/AM/FM
• electret condenser MIC on board
• 2 X 16CH LCD installed

MARAJ-01V3

Magnetic Materials - Ferrites & Iron Powder

Active Resonant Rx Antenna MARAJ-01V3 | 3-8MHz

JUMA© PA-100D, 100W* HF Power Amplifier
Portable, handheld Rx Active Resonant Antenna, for SWL-ing from 3 - 8MHz. Easy tunning, directive antenna for local SWL monitoring and not only.

• tunning range: approx. 3 to 8MHz
• total pre-amp. gain: aprox. 20dB
• ferrite rod antenna length: 140-150mm
• power supply: 9Vdc/5.5mAdc
• dimmensions: 100 x 45mm
• tripod camera compatibile (1/4″ to 3/8″ female thread inserted)

JUMA RX-1

Magnetic Materials - Ferrites & Iron Powder

JUMA© RX-1, 80/40m DDS based DCR Rx

JUMA© RX-1, 80/40m DDS based DCR receiver

CW/SSB Rx with continuous tuning from 100KHz to 8MHz. LO with AD9833 DDS. S-meter, MUTE, voltmeter display, 2X16CH LCD, AGC, SSB 2.5KHz LPF, low battery sound alarm.

• sensitivity: approx. 0.22µV (-120dBm)
• frequency selection in 10Hz, 100Hz, 1KHz, 10KHz, 100KHz, 1MHz steps
• display resolution: 10Hz on 6-character display
• SSB / CW modes, 300Hz… 2.5KHz filters
• S-meter on LCD display (24 divisions)
• DDS digital synthesis with AD9833
• anti-slip transparent rubber feets

Magnetic Materials

Magnetic Materials - Ferrite & Iron Powder

Magnetic Materials - Ferrite & Iron Powder

Ferrite rings, iron powder rings, ferrite binoculars and beads. Clamping ferrites for EMI/RFI supression. Micrometals ™ - FairRite™ - Amidon ™

• #31 material
• #43 material
• #52 material
• #61 material
• #77 material
• #other materials

Silver Mica Capacitors
Quality Silver Mica Capacitors- Cornell Dubilier™

With mica’s high breakdown voltage and temperature stability close to 500ppm/°C, ranging from pF to nF and 100V to 10kV nominal voltage, silver-mica capacitors are still circuit designer’s choice when it comes to specific RF applications (LPF filters, 100W to kW range, band pass filters, antenna tuners etc.), despite their bulkiness and high cost.

RF Coaxial Adapters

RF Coaxial Adapters for HF-SHF

Quality coaxial adapters with Teflon / PTFE insulators. From reliable sources, accompanied by complete technical specifications.

• BNC-male to SMA-male/female
• BNC-male to SMA-male/female
• BNC-male to UHF-female (SO-239)
• BNC-male to N-female
• N-male to BNC-female
• N-male to UHF-female etc.

RF Coaxial Adapters for HF-SHF

RF Integrated Circuits
RF Specific Integrated Circuits

RF specific integrated circuits hard to find or common types, used as single needed part in a specific application, or assortment kits for certain known kits (uSDX, BITx, mcHF etc.)

RF Specific Integrated Circuits
Quartz Crystals
Quartz Crystals, Filters and Resonators

HC-49U/S packages, 3P ceramic resonatos and filters
Murata™ – IQD™ – Abracon™ – ECS ™
Mainly for THT applications:

•quartz crystal ladder filters
• VXO oscillators
• general purpose oscillators
• HF CW transmitters etc.

Coils Inductors
Fixed or Variable / Tunable RF Inductors

IF Transformers and quality variable coils.
7 or 10mm PCB format.
Mitsumi™ – Neosid™ – Xicon™ – TOKO ™
THT applications:

• 455KHz IF transformers
• VFO coils
• filters and LC oscillators
• HF self-built coil sets (e.g. Neosid etc.)

Fixed or Variable / Tunable RF Inductors
Trmimmers
Trimmer capacitors – different values, THT

From original manufacturers and authorized distributors in USA and EU
Mouser™ – TME™ – DigiKey™ – RF Microwave ™
from reliable sources | complete technical specifications available

Trimmer capacitors – different values, THT
RF transistors
Low / Medium Power RF Transistors

Low and medium power RF transistors for HF-VHF
THT, for PCB or for heatsink fixing
distributors: Mouser™ – TME™ – DigiKey™ – RF Microwave ™

Low / Medium Power RF Transistors
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Calea Turnisorului 36, 550136, Sibiu, Romania

(40) 742 854 185

Professional Support & Consulting
Email Response Time: Max. 12h

3D/SSL Secured Card Payments
PayPal Protected Payments
Instant WhatsApp Live Chat Support
 Response in max. 30min. Mo-Fri, 9-17

Fast Worldwide Delivery: DHL Express
Standard Delivery Time: 2-9 days
Free Order Cancellation
Warranty for Finished Products: 2 y

Free Technical Documentation
Free Resources, available 24/7

Amateur Radio Products & Parts

JUMA®PA-100D 100W HF Linear Amplifier

100W from 160-10m, 150W P.E.P in all HF bands, protection and optical alarm in case of over-temperature, over-current, exceeded SWR.

fully assembled with power supply cable, interconnection cables for: FT817/18, mcHF, Juma TRX/ ELAD FMDuo / IC705

€566.5 (VAT + shipping excl.)

Buy Here

ROW-PDS-0X, 45W USB-C Power Delivery Supply System

45W USB-C Power Delivery Power Supply System, works with your QRP HF transceiver, also charges your gadgets (phone, tablet etc.).

cables available for mcHF, FT-817/18, Elecraft KX2/KX3, IC-705 transceivers and not only

€78,3 (VAT + shipping excl.)

Buy here

(tr)uSDX 5-band Multimode QRP TRx

5-band (80/60/40/30/20m), pocket-size, 5W, multimode QRP SDR TRx, ultraportable and battery or USB powered

available as assembled, adjusted & tested, equipped with mounting hardware

€132.6 (VAT + shipping excl.)

Buy here

Dual Band (80/40M) 25W Power Amplifier

medium power linear amplifier, able to operate in 80 / 40m bands, SSB / CW, Pin = 2-5W, Pout = 25-30W

available assembled, adjusted & tested, equipped with mounting hardware (spacers) for heatsink

€35 (VAT + shipping excl.)

Buy here

JUMA RX-1 80/40m SSB/CW DDS Receiver

JUMA RX-1 DDS receiver, CW and SSB, 80/40m, with continuous tuning from 100KHz to 8MHz, built in SMT technology.

ver. 3, with improvements (9V internal battery, LCD with backlight, additional frequency selection steps etc.)

€60 (VAT + shipping excl.)

BUY HERE

Product Accesories & Assembled Modules

interfacing cables / power supply cables & finished kits or modules

interfacing cables / power supply cables & finished kits or modules

SEE MORE...

Other Customers About Us

About roWaves Technologies

roWaves Technologies was founded in 2014 by YO6TJJ – Andrei, with the exact purpose of helping the amateur radio community with quality products, materials and electronic components, available in a single place: www.rowaves.com. roWaves Technologies ™ mainly manufactures, assembles and also designs in Sibiu (Romania), various equipment for amateur radio market and electronics hobbyists: low/medium power RF amplifiers (e.g. 100W+ JUMA PA-100D, ROW-8040DB), SDR transceivers (e.g. mcHF M0NKA, (tr)uSDX DL2MAN/PE1NNZ, uSDX), DDS receivers (e.g. JUMA RX-1) and HF antennas (e.g. MARAJ-01V3) and accesories. Also the company sells accessories for HAM radio equipment, RF electronic components (magnetic materials, fixed & variable inductors, RF transistors, quartz crystals & various filters, RF connectors & adapters, various integrated circuits, trimmer caps or silver-mica capacitors etc). Free resources and good quality information is available also on our website. Our team is presented below.
Contact us here
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Team roWaves Technologies

Andrei Avirvarei – YO6TJJ

new product development | customer care | schematic & layout design | business development

Daniel V.

technician |  SMT manual assembly | basic testing | mechanical constructions | cable harness

Sabin Stimer – YO6SRS

assembly | testing &  verification | technician's team leader | product testing | validation | warranty & service

Larisa O.

team assistant | takes care of administrative tasks and provides support to the team | customer care

Andrei Drăgan

software & programming | manufacturing | product design | customer care | business process

Dan P.

technician | construction | basic testing | cable assemblies & connectors | THT manual assembly

YouTube Channel

roWaves Technologies on Social Media

We publish our latest product updates, offers and news on our facebook page. Like us there 👇
For latest snippets from the laboratory workbench, product status updates etc., follow us here 👇
On YouTube, we have our new channel, #QRPwithMe. Subscribe there to see the latest videos we post 👇

From The Lab

🇬🇧🇺🇸🇨🇦🇦🇺 Important notice!

Between June 1st and June 3rd, we are out of office. We will resume activities on June 6th. Thank you for your understanding! roWaves

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