Transceiver QCX-CW si varianta QCX-SSB

[yo3fhm]

Prin amabilitatea colegului nostru, Victor:

 

VARIANTA ORIGINALA, 5W CW

 

QCX: a feature-packed, high performance, single-band 5W CW transceiver kit, with WSPR beacon and built-in alignment/test equipment. Available for 80, 60, 40, 30, 20 or 17m bands. It has rotary encoder synthesised tuning, VFO A/B/Split, Iambic keyer, CW decoder, and more...

Shop order: $49
https://qrp-labs.com/qcx.html

 

 

 

VARIANTA MODIFICATA PENTRU SSB

 

QCX-SSB: SSB with your QCX transceiver (modification)

This is a simple and experimental modification that transforms a QCX into a (Class-E driven) SSB transceiver. It can be used to make QRP SSB contacts, or (in combination with a PC) used for the digital modes such as FT8. It can be fully-continuous tuned through bands 160m-10m in the LSB/USB-modes with a 2400Hz bandwidth has up to 5W PEP SSB output and features a software-based full Break-In VOX for fast RX/TX switching in voice and digital operations.

The SSB transmit-stage is implemented completely in a digital and software-based manner: at the heart the ATMEGA328P is sampling the input-audio and reconstructing a SSB-signal by controlling the SI5351 PLL phase (through tiny frequency changes over 800kbit/s I2C) and controlling the PA Power (through PWM on the key-shaping circuit). In this way a highly power-efficient class-E driven SSB-signal can be realized; a PWM driven class-E design keeps the SSB transceiver simple, tiny, cool, power-efficient and low-cost (ie. no need for power-inefficient and complex linear amplifier with bulky heat-sink as often is seen in SSB transceivers).

https://github.com/threeme3/QCX-SSB/blob/master/README.md?fbclid=IwAR0K23LnyhBFx1oNK47FKeWhqBGIH1LdqF6WLhOS80Gg2rEf1ma735AWMRA

 

 

Comparati cele de mai sus cu oferta noastra din Romania, pentru ... "Transceiver DSB 80m | ROW-W3690 v.2 – kit", la 249 lei... (pe care culmea, am primit-o din partea unui radioamator cunoscut si bun profesionist in electronica). Cum vi se pare sa puteti lua un kit SSB la 49 USD (206 RON), fata de un kit DSB la 249 RON (59 USD) ? Hm ?

 

Mama ei de stiinta si de specula...

 

73 de Cezar

 

 

 

[ndor]

Daca e sa privim lucrurile din punct de vedere comercial , un produs facut in tara va fi intodeauna mai scump decat cel facut afara. A avut statul grija de treaba asta .

La produsul ala facut la noi , daca il vinde prin firma , cu factura si alte alea , mai mult de 120 - 140 lei nu cred ca castiga la el . In conditiile in care produce unul la cateva zile si vinde ....unul pe luna .

Iar daca e sa-l cumperi pe cel de la QRP-Labs , la aia 49$ mai adaugi transport , vama , tva  si ajungi aproape de 90 - 100$. Si pun pariu ca din aia 49$ ala cistiga 30 $ net. Si sa nu uitam de treaba cu garantia la care romanul tine foarte mult de la o vreme incoace, de cand s-a trezit ca e cu drepturi de cetatean european . Doar cu drepturi ..ca obligatii ....fara !!

Pentru cel , productie in tara , ii dai in cap vanzatorului ca nu a mers ceva bine la el , pentru ala facut afara cui ii dai in cap ?

La noi totul e complicat cand vine vorba de a face o afacere legala .

Asta din punct de vedere comercial , tehnic e alta discutie .

[grosu99]

Sunt tot mai multi care cumpara porcarioare de genul asta.Gugustiucarii.....

[VAX]

Acum 40 minute, grosu99 a spus:

Gugustiucarii.....

Gugustiuceii sunt pasarele inteligente, va rog sa nu-i vorbiti de rau. Am avut o gugustiucica in casa timp de cinci ani.

 

Pe de alta parte, ce este acest QCX ? E un sistem nou de transmitere in QRP ? E ca telefonul mobil ?

[grosu99]

Pai asta am zis si eu : ca au inteligenta unui gugustiuc !