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QRP-99 3 bands 20-40-80M HF transceiver

Myself and a fellow amateur (PA3WWW) ordered this project from KN electronic.
The whole comes well packaged and delivered in a box.
While building this project, there were a few aspects that we encountered that needed to be resolved.
For example, the coils of the pre-selector for the 20 meters and 80 meters were swapped by KN-electronic .... 
during measurements with the spectrum analyzer I found out that i lost my signal behind de preselector coils.
PA3WWW measured the coils after de-soldering out and the fault was confirmed.
Surely it is necessary to have measuring equipment for the aligment of this project and solve problems.
In the end we were both able to build our project with good results.

Below a brief description of the kit.

With this kit it is possible to build a high quality transceiver for the 80, 40 and 20 m band.
The kit includes all necessary parts including the knobs and sockets.
SMD are already installed, the filter coils are fully wrapped. VFO and front unit are already prefabricated in the interest of a high degree of replica safety. The QRP 99-V represents a complete overhaul of the Series 99. In general, installation has become easier and clearer thanks to the use of professionally manufactured printed circuit boards, of course with component printing, as well as the larger housing and the substantial simplified wiring. The housing is 5 cm wider than the previous models and thus offers considerably more space. Band switching and microphone connection are located on the front panel. Frequency range: 3.5-3.8 / 7-7.2 / 14.0 to 14.35 MHZ Operating modes: USB, LSB, CW, Digimodes; controller-controlled switching logic; Output power 10 W. (continuously adjustable); seven-digit digital display - GLCD with backlight 10 Hz resolution; Digital VFO (DDS); Coordination with optical encoder; switchable step size; automatic frequency storage; RX as single conversion, 9 MHz IF, 3-circuit preselector, active mixer ... QRP-99V-01 Band switching with bistable relays; integrated notch / peak filter; open collector output e.g. for controlling an external PA; Operating voltage 12 to 15 V / approx. 180 mA when received, up to 3 A when sent; Professionally manufactured printed circuit boards: solder stop, component print, through-plated; Weight (assembled) approx. 1.2 kg; Dimensions: 200x150x80 mm Powder coated aluminum housing; anodized aluminum front panel with inlaid letters; Detailed German building instructions
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Click here for the diagram
 


Click here for a photo-slide from building the transceiver
 


Click here for a Youtube film from the transceiver (first impression)


 

click here for a Youtube film from the transceiver (QRP99 first USA contact)




click here for a Youtube film from the transceiver (first receiver test)



click here for a Youtube film from the transceiver (QRP99 first QSO Dutch)
 

click here for a Youtube film from the transceiver (QRP99 building the TRX photos)



 Semcoset 2 Meter AM/FM/SSB receiver.

CLICK HERE TO SEE ALL PICTURES!!

This 2 meter AM / FM / SSB receiver was built by my father around 1970. The heart of the receiver is the 10 meter / 28Mhz MB109 converter / nachsetzer receiver from Semco. The power is supplied by a Philips kit which supplies 12V and 1A. There is a mechanical delay in front of the VFO.

The MB109


top view of the Semcoset




Signal generator test


                  Receiver test sunday morning round on 6-12-2020

 


1 Watt STE-222 Milano 2 meter FM transmitter

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The transmitter was bought in Milan around 1972 and built into a cabinet by my father.
The frequency is controlled by a mechanical delay.
The power output is approximately 1 Watt.
A 1750 Hz generator is also built in for repeaters.
Behind the PA is a double coax relay for switching the transmission / reception of the self-built Semco set. that way you get a complete 2 meter transceiver.
With the "spot" button you can turn on the driver of the transmitter so that you can set the receiver to the
transmit frequency without putting a strong carrier wave in the air.




  

40 meter mini CW QRP transceiver 20mW.

This building kit is from Banggood China.
It works ..... but the output is a mess .... as you can see on the spectrum analyzer.

CLICK HERE TO SEE ALL PICTURES!!







   


100 Watt dummy load with -40 db output attenuation.

This kit comes from Funkamateur-shop Germany.

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 -30Db antennuator max 5 watt

This kit comes from Funkamateur-shop Germany.

CLICK HERE TO SEE ALL PICTURES!!

  


SWR measurehead.

This kit comes from Funkamateur-shop Germany.

CLICK HERE TO SEE ALL PICTURES!!
 

 


Filters mains.

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Component tester

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LC meter

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8*8*8 RGB led cube

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