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qro.cz

qro.cz

My love for electronic started in my childhood, with a metal nail in a wall socket and the discovery of AC current :) First steps and soldering with soldering iron, old tube radios and first "baby" walkie talkie. The discovery of the CB band and later 11m SSB operation, where it was possible to work DC with the whole world at that time. Thanks to local amateur radio operators I got on the HF, VHF and UHF bands. Thought the local radio club OK2KFK and contest station OL2R, I made my way to OL7M and building a large M/M contest QTH. The need for more complex controls, switching, RX antennas and other equipment led to many products on RemoteQTH.com web. Later, I started making other products in my company under the QRO.cz brand.

Now we are dedicated not only to the production for radio amateurs, but also to custom development and production in the field of RF. The next steps are also towards remote control via the Internet, IoT and other modern technologies.

2-way active splitter 2-way active splitter 2-way active splitter

2-way active splitter

76.23 € (tax incl.)
This is very useful device - this is active splitter version. It can provide equal voltages, equal current, or equal power to matched or unmatched loads. Input low noise amplifier can eliminate insertion loss of the...
RX Protection limiter with CMCC BOX RX Protection limiter with CMCC BOX RX Protection limiter with CMCC BOX

RX Protection limiter with CMCC BOX

85.91 € (tax incl.)
This protection limiter box is able to protect your receiver against the high power RF signals and prevent from destruction.
RX Coax Match & limiter with CMCC BOX RX Coax Match & limiter with CMCC BOX RX Coax Match & limiter with CMCC BOX

RX Coax Match & limiter with CMCC BOX

83.49 € (tax incl.)
This device is impedance matching transformer for 75 to 50 or 50 to 75 Ohm. It's designed for your RX antenna system and offer more than impedance matching.
3-way active splitter in BOX 3-way active splitter in BOX 3-way active splitter in BOX

3-way active splitter in BOX

116.16 € (tax incl.)
This active splitter allows you to split one antenna into multiple RX. The splitter can also be used to split a reference frequency, for example 10MHz. The outputs have high isolation and minimal difference in...
2-way small splitter with bypass 2-way small splitter with bypass 2-way small splitter with bypass

2-way small splitter with bypass

59.29 € (tax incl.)
The splitter or combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads.
Common-mode current choke 1-PORT Common-mode current choke 1-PORT Common-mode current choke 1-PORT
Bestseller

Common-mode current choke 1-PORT

67.76 € (tax incl.)
Common mode choke coils work as a simple wire against differential mode current (signal), while they work as an inductor against common mode current (noise).
Common-mode current choke 2-PORT Common-mode current choke 2-PORT Common-mode current choke 2-PORT

Common-mode current choke 2-PORT

95.59 € (tax incl.)
Common mode choke coils work as a simple wire against differential mode current (signal), while they work as an inductor against common mode current (noise).
Common-mode current choke 3-PORT Common-mode current choke 3-PORT Common-mode current choke 3-PORT

Common-mode current choke 3-PORT

127.05 € (tax incl.)
Common mode choke coils work as a simple wire against differential mode current (signal), while they work as an inductor against common mode current (noise).
Preamp BOX with 2N5109 Preamp BOX with 2N5109
Bestseller

Preamp BOX with 2N5109

89.54 € (tax incl.)
RX preamplifier with variable gain, protections and power over coax.
RX Triplexer 2L RX Triplexer 2L RX Triplexer 2L

RX Triplexer 2L

58.08 € (tax incl.)
This is simply RX triplexer. There are three band pass filters used as splitters or combiners.
3-way small splitter 3-way small splitter 3-way small splitter

3-way small splitter

53.24 € (tax incl.)
The splitter or combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads.
RX small preamp with 2SC5551 RX small preamp with 2SC5551 RX small preamp with 2SC5551

RX small preamp with 2SC5551

55.66 € (tax incl.)
The RX small preamp is very simply low noise preamplifier module with 2SC5551 transistor based on W7IUV design. Use it as high IP preamplifier for RX antennas, buffer amplifier or small driver.
2-way small splitter with bypass KIT 2-way small splitter with bypass KIT 2-way small splitter with bypass KIT

2-way small splitter with bypass KIT

33.88 € (tax incl.)
The splitter or combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads.
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