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Hi Charlie I have one, let me dig out the info on it, will post tomorrow Al ve3gam

Does anyone have information on this unit? A schematic, parts list, etc? Charlie, H3UIM

Hi, i'm currently building a 2N2/40+. Here I use the circuit diagrams "2N240+AA-DA.SCH; 02012002" from the page "https://www.k8iqy.com/qrprigs/2n240+/2N240+Schematics.html" As layout I use the K3PEG

The ubitx filter are low pass design. The Ubitx has NO band pass filters. The Bitx40 current has a filter that has a peaked low pass. The really old versions of the bitx20 had a true band pass. if

Hi Mark, That is what I thought, too. I am using low pass filters (per band) external to my uBitX to deal with the poor spectral performance (I have the version 3). I expect to go to bandpass filters

I always thought the uBitx filter was a lowpass filter not a bandpass filter I could be wrong though. I would suggest QRP-Labs bandpass filter kits very cheap http://qrp-labs.com/bpfkit.html

Thank you for all of the replies. This makes perfect sense now. I'll design a better bandpass filter (maybe just one band instead of all of them). <johnmars@...> wrote:

So, the problem must be the?? Ubitx bandpass filter is not right, or not a very good bandpass filter. 73, Gary WB6OGD

Richard, It's an image rather than a harmonic. Harmonics are integral multiples of a frequency so 3725, 7450, 11175, 14900, etc. When your receiver is tuned to 14265, the Si5351 local oscillator runs

Hi Richard. As I expect you’ll hear from many folks, you are hearing the sum and difference of 9 MHz and your 5.265 vfo. If there isn’t a tuned circuit in your RF amp, the uBITX front end will do

Certainly, * Superheterodyne design with diode ring mixers * IF is 9 Mhz * LO is produced by a Si5351 (square wave LO) Block diagram: ANT -> Ubitx bandpass -> RF amplifier -> DBM -> Crystal filter (4

Can you give us more info about your receiver? Mike M. KU4QO wrote:

Good morning, I have a weird issue that I would like to ask you folks about. Yesterday, I heard a net that I thought was on 14265 khz. I reached out to one of the operators because I thought that it

find attached sprat60 with LCK info 72 g0nmy - *May the MORSE be with you!* - *My Ham Radio Blog <http://www.g0nmy.blogspot.co.uk>* - G?NMY G-QRP #12875

Here are the manuals that I have. I hope that helps. Mike M. KU4QO <cab0310@...> wrote:

This makes it difficult for us to experiment with radio kits. Communication with project website. Visit: http://qsldobrasil.blogspot.com Oliveira PY2-255SWL Call Sign PU2OLT RX Morphy Richards 27024

The LCK was a G-QRP project published in Sprat, their newsletter. I found it listed on an archived page of the Kanga-USA site, but no instructions or anything. I would contact the G-QRP folks and ask

Hello Curt, Thank you for the answer.I found the description of the LCK transceiver in SPRAT Nr 60, thanks to the help of some members of the GQRP club. All the best, 73's Claude, HB9CGL

I would try contacting Kanga Products: https://www.kanga-products.co.uk/contact/

Well some very obscure early qrp kits on this side of the Atlantic also. Try a list with a lot of UK participation, maybe the one for qrp labs. ID the semiconductors to see what is there for starts.