This is what I want to emulate with a DIY solution http://www.abracon.com/Sockets/11.4x4.7/AXS-1147-02-01.pdf The real thing costs $36.00 which may be worth it but $0 sounds more attractive :) Elia

Hi, Thanks for your suggestions guys, maybe I wasn't very clear with my question so let me explain better, the crystals I want to test are surface mount ones so crocodile clips or standard sockets do

Farhan, Thanks for the advice, should be starting the selection process next week. I have ordered 300 crystals so that should keep me busy for a while. Any suggestions for a quick method of fixing smd

Ciao Gaetano, I received your email, please check your inbox for my reply. Elia

Hi, Thank you to everyone that has confirmed their interest in the smdBITX so far. I have placed in the files section a pdf document (smdBITX.pdf) that details the pricing and postage for the PCB and

Hi Dov, Thanks for your interest. The current kit is only for the SSB generator, however I am slowly but surely working on the next complements of boards to make this a multiband transceiver covering

Dear friends and fellow radio amateurs, I have finally completed my work on the smdBITX, which I called version 4.0 to differentiate it from any other BITX. The smdBITX is based mainly on the version

Yannick, Merci beaucoup pour le magazine. 73 Elia, 2E0ZHN

Hi Arv, Your suggestion really caught my fancy just as I am putting the finishing touches to the smdBITX board! I think I am going to add some headers to the smdBITX PCB to allow experimentation with

Hi Ross, You don't mention if you are using a kit (and which one if so) or if you are scratch building. Seems you maybe using a Hendricks kit? Check the obvious again and again: have you used the corr

I second everything that has been said so far. For me the pleasure in amateur radio is the building of circuits and making them work. QSO's are nice and rewarding but come second. Test equipment are a

Hi Charles, The PCB is 85 x 95 mm but the final board will be slightly larger, possibly 100 x 120 mm to accommodate the AGC circuit, CW tone generator, the mods to the Adio and mkie amps and the addit

Andy, Thank you for your kind words and I'm glad that everyone is sharing my excitement of the smdBITX. I am definitely planning on producing the PCB and kit of the main board first which is just the

A Merry Christmas to All! Hope you have a wonderful time Elia

Small update on the PCB's, thanks entirely to Leonard's (kc0wox) video and assembly details there seems to be some interest in the smdBITX PCB. I am planning on doing a run of professionally made PCB'

Hi John, I didn't use the generalised factors as outlined in Farhan's site, instead I measured (calculated) the parameters using the setups and equations in the EMRFD book and an article I found on th

Joop, ok I see where I went wrong :$ I just measured the crystal socket only without the crystal. Did some new measurements, the crystal on its own gives 0.7pf so a total of 1.6pf for Cp. This didn't

John, I used the G3UUR method described on Farhan's web site and also in more details in the EMRFD book by Wes Hayward. Elia, 2E0ZHN

Hi Joop, Yes that is correct, the capacitance of the holder is 0.9pf indeed. The holder is simply two pcb pads superglued to a larger pcb base hence the low capacitance. Elia

I've been measuring the motional parameters of the smd crystals I have and entered the results into a ladder filter design software. Initial results show that a filter of 2.4kHz bandwidth is possible