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HF-Index of pa0nhc technical HAM pages.

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NL

EN

Active RF low power meter.
1uW - 4mW (-30 / +6 dBm).
32kHz - 800MHz (2.5Ghz).
Size 9 x 9 x 6 cm3.

pa0nhc 20170813
Preliminary development data.
PCBs will become available.

NL

EN

Active in-line RF power meter.
0.5mW - 200W (-3  / +53 dBm)
FSD = 0.02 / 2 / 200W.
320 (32) kHz - 200MHz.
Size 9 x 9 x 6 cm3.

pa0nhc 20170816
Preliminary development data.
PCBs will become available.

NL

Voorkom dat lichtnet storing uw radios bereikt :

Net storing filter (23,52 Euro) ?
of
"Ultra isolation transformer" (835 USdollar) ? 

NL

EN

Magnetische veld sterkte indicator.
Op afstand afleesbaar.
Stem uw (raam) antenne werkelijk resonerend af.
Goedkope onderdelen.

PCBs are available.
 20170721
Printjes zijn beschikbaar.

Magnetic field strength indicator.
Remotely readable.
Tune your (loop) antenna to real resonance.
Cheap components.



                         Display unit  9x9 cm                             Antenna unit  5 x 5 cm2

EN

NL

Easy and fast antenna and filters VSWR plots on a laptop.
Complete with all software.

New version PCB#75 is available :

- cheaper BNC chassis bus
- 6 lead SOT-23 ic's for easier soldering
- 35mil holes for easier fit of both boards into the main board.


Makkelijk en snel VSWR grafieken van antennes en filters op een laptop.
Inclusief alle software.

Nieuwe versie PCB#75 is beschikbaar.
- Goedkopere BNC behuizing bus
- makkelijker te solderen 6 pin SOT-23 ICs
- 35mil gaten voor makklijker plaatsen van de boards

   20170621.


Antenna VSWRsweeper V2
With Vrms-to-Vdc converters
0.05-30MHz (max. 70MHz).

EN

NL

Active capacitive wideband DX receiving antenna.
100kHz to 28MHz.
Real class A circuit => ! NO IMD !

Improved schematics and new PCBs
Fused splitter.
20170727

Aktieve capacitive breedband DX ontvang antenne.
100kHz tot 28MHz.
Volledig in klasse A -> ! geen IMD !

EN

NL

Small, simple and noise free power supply. 
Perfect companion for the Miniwhip.

12V/185mAdc. 
(PCB not needed).

Klein, eenvoudig en stoor vrij voedinkje. 
Perfect voor de Miniwhip.

EN

NL

All weather outdoor magnetic loop antenna for transmitting on 40-(60)-80m
with optimal cost / performance ratio.

>> Perfect broadband transformer matching <<.
New 40m+80m matching transformer-set, remotely switch able.
NO TVI / BCI
35mm copper water pipe radiator for max efficiency on 80m.
THICKER IS MORE EXPENSIVE, BUT NOT BETTER !


20170614

Weerbestendig magnetisch zend raam voor 40-(60)-80m
met optimale prijs/prestatie verhouding.
>> Perfecte breedband transformator aanpassing <<
Nieuwe, op afstand omschakelbare, 40m+80m transformator combinatie.
GEEN BCI / TVI
35mm dikke straler van  koperen waterleiding buis met maximaal rendement op 80m.
DIKKER IS DUURDER, MAAR NIET BETER, DUS ZINLOOS !

NL

EN

 

Antenna SWRsweeper V1
re-editted 20170404
 With diode-compensating buffer stages

With mask for DIY PCB

Easy and fast SWR plots of antennas and filters on a laptop.


SWR curve of my 10m circumference loop.
Sweeper connected at the transmitter end of the coax.

EN

NL

Radically new designed :
Top quality 80m ARDF direction finding receiver.
With all build-in antennas.
Small and light.
Very sensitive, gain adjustment range 100dB.
Constructed with modern and cheap
commonly available components.

01409

Radikaal nieuw ontworpen :
top kwaliteit 80m ARDF vossejacht peil ontvanger.
Volledig ingebouwde antennes.

Klein en licht.
Zeer gevoelig, regel-bereik 100dB.
Volledig opgebouwd met moderne, goedkope
algemeen verkrijgbare onderdelen.




Professional double sided PCBs will become available soon.

EN

 

 

 

 

 

 

 

 

NL

     MAGNETIC 80m band receiving antenna.
Build-in noiseless power supply.
Remotely tune able.
A
daptable for other SW- bands.
Perfect for NVIS (reception of regional signals).
Small, u
nsusceptible.
                               SPECIAL:
Single coax connection between tuning- and antenna unit.
Optimal sensitivity.
Can suppress local noises if rotate able.
Nearly all wired, standard components.

MAGNETISCHE 80m band ontvang antenne.
Inclusief storing-vrije voeding.
Op afstand afstembaar.
Aanpasbaar t/m 14 MHz frequentie banden.
Perfect voor NVIS (ontvangst van regionale signalen).
Onopvallend klein, slechts 15x10cm.
                               BIJZONDER :
Enkelvoudige coax verbinding tussen antenne- en afstem eenheid.
Optimaal gevoelig en selectief.
Kan storingen onderdrukken, indien draaibaar opgesteld. Nagenoeg alleen bedrade standaard componenten.

Beware for a bad copied commercial version.


Old antenna unit (Proto type).
In the new design T2 is a BD139.
The connecting cable should be a thin coax.

PCBs available on request.


New version tuning unit + noiseless power supply PCB.

EN

NL
Finding radio-noise-sources using a special wideband AM receiver "EMV-spy".

Radio storing bronnen zoeken met een "EMV-spion".
NL The ongoing experiment : 600W PA with BLF188XR. It takes so long because lack of funds HIHI.
EN

The "pa0nhc Cobra" symmetrical wire antenna (3.5-14MHz).
This could be THE solution if you want a symmetrical antenna, but you cannot connect a feeder to the center of a antenna.

Minimal induced RF in mains wiring, speaker cables, telephone line => No TVI / BCI !!!!
Low received noise level.
No transformer, just one dedicated coax choke.
Matches to 50 Ohms on lowest band (making strong NVIS signals).
Needs asymmetrical tuner on higher bands.

Symmetrical dipole feeded with coax at one end


VERY SPECIAL ====>>

Impossible ? Another "wonder antenna" ?
Check it out !

(In the future i will try to design e new, easy to install, choke construction).

EN

NL

Xfilt DEMO

Xfilt : Filter voor lokale storingen.
Incl. aktief storing antennetje.

Xfilt : Canceling filter for locally generated noises.
Including active noise antenna.

EN

NL

The grounding and de-noising
of my antenna system.
20160526
De aarding en ontstoring van
mijn antenne installatie.

EN

NL

- Improved automatic tuner for loop antenna.
Pure analog (Without software).

- Verbeterde automatische tuner voor een raam antenne.
Puur analoog (zonder software).

EN

NL

De-noised 12V PC SMPS. 
Cheap 12.1V / 35A power supply for 100/200W transceivers.

Goedkope 12.1V / 35A voeding voor 100/200W zendontvangers .
Een ontstoorde 12V PC voeding.

EN

NL

De-noising a common used scoot mobile charger.

Ontstoren van een algemeen gebruikte scootmobiel lader.

NL

EN

Ferrite transformer experiments.
EN

NL

- Simple adjustable DC tune-motor driver.

- Eenvoudige regelbare DC afstem motor besturing.

EN

2 Watts 80m CW or AM transmitter for ARDF.
2W CW into 50 Ohms load, 0.5W AM, externally modulated into 50 Ohms load.
Sturdy, withstands very high SWR.
Fixed accurate frequency without adjustments.
Unconditionaly stable and sturdy.

Special designed single sided PCB for good performance and good efficiency.
Resulting in a well filtered signal, no parasitics,
 
If using a 50 Ohms antenna, setup in the field without further adjustments.

2013

EN

80m 65mW AM foxoring transmitter.
Including adjustable modulation tone.
Well filtered, clean signal.
No adjustments with 50 ohms antenna.
20130505

EN

80m beeper
(mini-TX "Sputnik").
Single frequency, simple, stable, clean signal.
CW keyed.
Well filtered, clean signal.
No adjustments.
201305

EN

Directional couplers, HFout and DCout.
7  PCB designs for various connectors and housings
for a DIY double sided PCB.
No coils nor ferrite.
Use able up to 440MHz.
For milliwatt filter in/out SWR measurements and 50W power meters.

Easy, cheap, dependable.