roWaves Technologies

Certified Company ISO 9001-2008

mcHF SDR – HF, 10W+, QRP transceiver

The famous mcHF QRP SDR transceiver (rev.0.4), designed by MØNKA (original design, no clone). It has the necessary HW changes up to version 0.6, as well as the SW settings already made. Runs firmware 2.7.0 and bootloader 3.4.5. It can be upgraded. A list of modifications implemented, can be found below. RF power: at least 10-12W from 160m (1.8MHz) to 15m (21MHz) and 7-8 W in the 12m (24MHz) and 10m (28MHz) bands. Pmax is greater than 15W, in 30m, CW. Stability assured by XTAL. Working modes: CW (CW-L / CW-U), SSB (USB / LSB), AM (BLD / DSB), SAM, FM. CW / SSB filter: 300Hz / 500Hz / 1.8kHz / 2.3kHz / 3.6kHz / 5kHz / 6kHz / 7.5kHz / 10kHz. Digital modes: SSTV / PSK-31 / FT8 / WSPR. USB / CAT control.
YOU GET A HAND MICROPHONE (ROW-M1 mic.) & POWER SUPPLY CABLE, FOR FREE!

What you will get installed inside the transceiver:
✔ complete and fully functional mcHF SDR TRx (rev. 0.4 PCB with all the changes mentioned below)
✔ rubber quality knobs (see product pictures, color may vary*), for all 3 x encoders (M1/M2/M3)
✔ quality low-profile speaker, for quality audio
✔ quality finished black aluminiu case with back-stand
✔ quality aluminium navigation-encoder knob
✔ LCD  touch-screen activated
✔ full-power capability, over 10W in almost all hf bands (160-10m)
✔ robust construction, with genuine quality parts from EU distributors (TME, Farnell, SOS Electronic etc.) – easy replamencent if necessary
✔ SW settings already implemented, upgrades possible via USB / Flash-disk
Detailed specifications, below.
Assembly time on back-order: aprox. 15 working days. Payment (PayPal or credit card) when your product is complete and ready to be shipped. 30 days money back guartantee if you are not satisfied 👍.
For safety reasons, this product will be shipped with DHL (30EUR), so please use this shipping option at checkout! Thank you!
Price :

 409,90

Available on backorder

ParameterSymbolValueUnitConditions / comments
Operating bandsFoRx: 160/80/40/30/20/17/15/12/10
Tx: 80/40/30/20/17/15/12/10
m160m band requires external LPF, because the internal filter has cut-off @4MHz
RF powerPo5W160m-10m
Max. RF powerPo(mod.)13.6W (160m)
12.9W (80m)
11W (60m)
9.1W (40m)
15W (30m)
12.5W (20m)
12.1W (17m)
10.6W (15m)
7.75W (12m)
6W (10m)
W160m
80m
60m
40m
30m
20m
17m
15m
12m
10m
SWR-meter accuracySWR1:1 from 160 - 30m
1.2:1 from 20 - 17m
1.7:1 from 17 - 10m
n/a1:1 from 160 - 30m
1.2:1 from 20 - 17m
1.7:1 from 17 - 10m
Total operating freq. rangeFo*0.9 - 32MHzwith limited functionality
Frequency stabilityFstab.± 3ppm± 3ppm with TCXO (-30 ÷ 85⁰C)
± 30Hz with XTAL (10 ÷ 35⁰C)
ModesOPMCW (CW-L/CW-U), SSB (USB/LSB), AM (BLD/DSB), SAM, FM-- AM (continuous carrier, DSB)
- SAM ( double band reception)
- AM/FM transmit mode available only in "frequency translate" mode activated
CW speedWPM5 - 48WPMinternal CW generator and monitor
Audio LPF / BPF filtersFaafnarrow: 300/500/1.8/2.3/3.6 wide: 5/6/7.5/10kHz (filtre SW/SDR)active in all modes, except FM (where filtering is done before demodulation)
DSP digital filtersFaafNR
ANF
- NR - noise reduction
- ANF - automatic notch filter
S-meter calibrationSS-9S-units (-)73dBm (50.2uV@50 ohmi)
Digital modesDIGSSTV/PSK-31/FT8/WSPR
CAT
-thorugh Line-In, Line-Out, PTT - 3.5mm jack
- CAT, Audio IN/OUT, IQ In/Out functions thorugh USB
External signal levels-LINE-OUT: 1
LINE-IN: 0.1-1
Vp-p
Vp-p
- max., with AGC activated
- can be adjusted through “Line Input Gain”
Voltage supply rangeVdc max.6.5 - 18Vdc- 6.5V (only Rx)
- 11V (full power can be delivered)
- 16V ( for 18V, some capacitors need to be changed onto the boards)
Nominal voltage supply rangeVdc nom.11-14Vdc
ON current consumptionIdc nom.340
400
1.9
1.72
1.66
2.48
2.65
mA
mA
A
A
A
A
A
- @12Vcc, Rx(max. vol., LCD min. luminosity.)
- @12Vcc, Rx(max. vol., LCD max. luminosity)
- Tx, full PWR @ 10m (CW)
- Tx, 5W @ 10m (CW)
- Tx, 5W @ 160m (CW)
- Tx, full PWR @ 160m (CW)
- Tx, full PWR @ 30m (15W / CW)
OFF current consumptionIstby.3.46mA@12Vcc
Max. RF powerRF pwr13.52Win 30m band (12Vcc / 2.65A)
DC supply connectorDC jack2.5mm- male, PCB
DimmensionsL x l X H19 x 4.5 x 7cm- enclosed
WeightG613g- enclosed

What you will get installed in transceiver:

 

✔ complete and fully functional mcHF SDR TRx (rev. 0.4 PCB with all the changes mentioned below)

✔ rubber quality knobs (see product pictures, color may vary*), for all 3 x encoders (M1/M2/M3)

✔ Visaton genuine SC-4.7 ND speaker, for quality audio

✔ quality finished black aluminiu case with back-stand

✔ quality aluminium navigation-encoder knob

✔ LCD  touch-screen activated

✔ full-power capability, over 10W in almost all hf bands (160-10m)

✔ robust construction, with genuine quality parts from EU distributors (Mouser, TME, Farnell, SOS Electronic etc.) – easy replacement, if necessary

✔ XTAL (30ppm) stability for freq. measurement and generation

✔ SW settings already implemented, upgrades possible via USB / Flash-disk


HW modifications implemented, in order to increase the overall performance:

All mcHF transceivers assembled, tuned and sold by roWaves have the HW mods implemented.

For UI board:

  1. 1. UI-04-N-004 HY28A Display vs. HY28B Display Changes
  2. 2. UI-04-N-025 / UI-05-N-025 / UI-06-N-025 Switch LCD to SPI mode
  3. 3. UI-04-N-026 Activate touchscreen (recommended to use actual FW features)
  4. 4. UI-04-N-006 Display Dimming Interference Reduction
  5. 5. UI-04-N-008 Better Power Supply Filtering
  6. 6. UI-04-N-020 Simplified Bootloader Reprogramming
  7. 7. UI-04/05/06-N-019 Fit/Replace U7 EEPROM
  8. 8. n/a  – electret condenser microphone correct biasing and activation (supressed “click” and “thump” noise when PTT is pressed)

For RF board:

  1. 1. RF-04-N-001 PA Overshoot
  2. 2. RF-04-N-002 PA RX Quiescent Current Reduction
  3. 3. RF-04-N-005 I/Q Signal Phase Improvement
  4. 4. RF-04-N-018 RX Sensitivity Improvement
  5. 5. RF-04/05/06-H-029 – relay switching for PA/Rx path (replacement for PIN diode switching)
  6. 6. RF-04/05/06-N-023 SWR Meter Operation Improvement
  7. 7. RF-04-N-011 Reduce standby current
  8. 8. RF-04-N-012, RF-04-N-022 Correct unsymmetrical ADC in the SWR measurement
  9. 9. F-04-N-015 – replacement for T5 transformers
  10. 10. RF-04-N-016 Replace RFC5 and RFC6
  11. 11. S53DZ status report 01 – T2 & T3 transformers central turn changed from CuEm wire to RG-316 coax wire for better SWR measurements
  12. 12. S53DZ status report 02 – replacement of old T7 transformer, from 1 x BN43-202 to 2 x BN43- 202, PRI & SEC with teflon wire, 270pF in parallel with PRI, decoupled by 100nF
  13. 13. S53DZ status report 03 – LM2931 resistor mod. (2.2kΩ between pin 1 & 4) for correct biasing of PA MOSFETS

Above changes are compiled from GitHub repository: https://github.com/df8oe/UHSDR/wiki/Recommended-Modifications

 

 

 

 

mcHF in SOTA – Ep.2 (RO)

mcHF in SOTA – Ep.1 (RO):

QSO de YO6TJJ/P QRP with DK3EE  on 20m, GP antenna, 10W QRP:

Rx on 80/40m, Spiral Loop / 80m Frame antenna  (RO):

 

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