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HB-1A 2 band QRP CW transceiver 2014
Old version QST review
by Mark J Wilson, K1RO
(production review editor of QST magazine)
R4020 eham.net review
Youkits HB-1B MK2 4 band QRP CW transceiver
Youkits EK1A and EK1B
3 Band QRP CW transceiver kit
EK1B 3 Band QRP CW transceiver kit
covering 20m, 17m and 15m band
EK1A 3 Band QRP CW transceiver kit
covering 40m, 30m and 20m band
Both model sold out
|TJ5A HF 3-30Mhz 20W SSB CW
Transceiver Kit and assembled
High performance AGC
features strong signal handing ability
+/- 120Hz RIT is available
New final transistor RD15
DDS controlled, LCD display
1-20W output adjustable
TX/RX: 3-30Mhz continiued SSB CW
10Hz,100Hz,1KhHz,10KHz,100KHz tuning rate available
Dual VFO with 40 memories
Memory transfer to VFO
Built in speaker
|TJ2B MK2 5 Band SSB Handheld
free radio pouch
free lithium battery + charger
free hand mic
Sold out at this moment, new production will be ready in May.
|TJ4A MK2 4 BAND BACKPACK HF
Improved and simplified design
Tune knob instead of key and much more
2 Band CW transmitter kit
Introduce price is only $129!
TT2A works at 7.030 and 14.060. However, crystal sockets are used in the kit, offering a more flexible frequency switching. Crystals ranging from 60m – 20m can be plugged in to work without altering the tank coil.Output: 4W
WORKING ON OTHER METERBANDS
The frequency range for BAND 1 is 5 – 7.50MHz. 60m – 40m is covered. Simply pull out 7.030 crystal, and plug in a crystal ranging from 5 – 7.30MHz. Re-tune CT1 to produce the maximum power. For example, plug in a 5.320 crystal. What you have to do is to tune CT1. You do not have to change the band coil. That simple!
The frequency range for BAND 2 is 10 – 14.50MHz. 30m – 20m is covered. Simply pull out 14.060 crystal, and plug in a crystal ranging from 10 – 14.30MHz. Re-tune CT1 to produce the maximum power.
The kit works at 17 – 15m by changing the required crystals. However the tap of the tank coil should be altered.
Note. High performance 6C3 is used to replace 6N1. Please jump pin 1 and pin 9 of V1 with a wire.
Power supply need: 200-250V 100ma, 6.3V 2A
Enjoy building this 2-band CW tube transmitter, watching the conforting glow from the tube pumping out 4W, only a weekend's work.
TT1A assemble instruction 30/Sep New!
Now comes with custom made acrylic frame!
|TJ4A 4 BAND BACKPACK
(Will be upgraded by MK2 version)
Assemble instruction 29/09!
Instruction of connection
Main board part list Feb 09
DDS part list Feb 09
Power board part list Feb 09
PA board part list Feb 09
Q27 MOD Feb 09
JN3MUC TJ4A building blog
G4IHZ TJ4A review
|TJ2A 2 BAND SSB CW HANDHELD
(Upgraded by TJ2B)
TJ2A works from 160M ~ 10M by changing BPF components
Specification New optional crystal
Assemble instruction 10/May
TJ2A part list Jan/2012
TJ2A battery board part list
A mod for TJ2A
New mod for TJ2A Jan 2012 New!
Constrction note V1.4 made by Mr. Hof from Netherland
We are building a contact list for the kit builders worldwide. If you are builder and interested in building for others,
Please contact email@example.com
Kit builder list!
If you need help for building a kit, also send me email, I may put you in want list.
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Comments about Youkits
Sir i am a hobbiest in electronic specially in radio 'i would like to say thank you for your unending help for all of us out here even half of the
world location, many of your circuits ideas help me a lot..i hope you continue receiving a good health and blessings always...kip it up sir..
Albert L. Tomimbang
representative in Canada
SATERN Member,SATERN Amateur Radio Liaison Officer
DEC Amethyst District ARES
RU QRP Club # 285