Dear forum, How do you select these xtals, I mean 2, 7, 8, 9 sort by "one leg to ground" or 1, 11, 2, 9 srt by "one leg to ground but via cap 33 pF" ? Thanks. Yours, Milarepa

Hi people, havent been this excited about homebrew since I was a kid and built my first (totally illegal) valve CW TX - thank you Ashar, do you realise what you have started? Have done the VFO and aud

Hi all My BITX20 is at an advanced stage of construction, but due to family commitments I won't have very much time to finish it off over the next few weeks. I used a modular construction style, eac

guys, pete joins us on the group. he has details about substituting the tv baluns cores with FT-37 cores. he has also pointed out that the receiver gain is low. anybody else too who has experienced t

Dear All I looked at Farhans site and found http://www.phonestack.com/farhan/xcvr1.html In that he says:- Substitutions The BF195 transistors can be substituted with any other HF transistor like

Hi! Friends! It is a pleasure to see a dedicated group for Farhan design. I did make the last transciever designed by OM Farhan and also enjoyed a long chat with him on LL abt the same. BTX is cer

we have om wes, w7zoi on the list. we all know him like an old friend from his books and articles. this is a remarkable moment. - farhan

_________________________________________________________________ Looking for something? Cant find it anywhere? http://go.msnserver.com/IN/50756.asp Log onto baazee.com

Hello fellow constructors! What a good idea Hans to set up this group! Just to say I am logging in and I am keen and excited to start building this brilliant bit of kit! All the best. Duncan G4DFV

HI everyone, got an urge to return to homebrew,This looks a good restarter project. posted an order direct to you Hans.Thanks. Jack

i have posted some pictures of the rig that were in my mailbox. three of them are from hans, from andy. - farhan

dear pete, very good on your efforts. which crystals are you using? the Cb crysals available for 9MHz are quite cheap. i am using a PC-based AGC system with some kind of noise blanker and even squelc

Hi All I've completed the VFO today, some pictures on the reflector. Just need to wait for Hans Components Inc before we go any further. VFO swinging from 4.25MHz to 4.4MHz - very adjustable with t

with the lpf in circuit. I've checked the lpf cut-off and I would expect some attenuation but not that much. I tried an irf530 which promptly overheated and destroyed itself as I increased the bias!

Many thanks for the advice Farhan.   I've taken the measurements you suggested and indeed it was the driver whose output was low - only about 1 volt peak. I was using BC549s throughout and although

---------- Forwarded message ---------- Date: Sat, 19 Jun 2004 22:08:39 -0700 From: Pete Juliano <jessystems@...> To: Ashhar Farhan <farhan@...> Subject: Re: Fw: First QSO with the BITX20 Transceiver

the 2N2218 is a fatter type of 2N2222. you can use the 2N3866 instead. they are expensive in india. but they might be easier to find elsewhere. - farhan

i calculated 3uH on each winding. - farhan

Please could somebody explain to a non-native speaker what "tap washers" are and where to source them? I guess this must be some sort of "plastic toroid" (ab)used as a coil former. But what is it

Finally here's a full list of what I can order for you from Rapid Electronics http://www.rapidelectronics.co.uk. Prices are the Rapid prices, i.e. no profit for G0UPL :-( Postage is the price of a