About Me

Hamradio operator licensed since 1989. I am active in CW and quite all the digital modes. I am mostly a QRPer and don't have microphones connected to the rigs. I participate to few contest when I find the time and the conditions are good for the QRP activity. Usually not more than twice a year. In 2009 I passed the US extra exam and received the call AJ4PX. In this blog I will try to post all the relevant activity in ma shack and hope you can find something useful for you. Read more >>

Related Articles

3 Responses to “BITX multiband pcbs and components arrived!”

User Gravatar
LZ2JR said in February 10th, 2013 at 21:51

Hi Giorgio,
please share with us your experience with BITX multiband G6LBQ transceiver built. I purchased also one and it is already alive – receives on 80/40/20 and delivers 2V peak to peak on TX. I am using Si-570 controller VFO from sdr-kits and IF filter is 9MHZ XF9B. Thinking about PA module.
Good luck and see you soon

73 de LZ2JR
Boris

User Gravatar
Giorgio said in February 15th, 2013 at 11:29

Hi Boris,

thanks for letting me know the VFO you use on BITX. I also have one of it and I am curious to know which SI570 you used, the CMOS or the LVDS?
It’s the point I am stopped my work on the kit because I have some other DDS VFO but not sure which one is ok. If possible let me know if you used some king of adapter/attenuator stage between the VFO output and input on BITX.
For the PA I am thinking to use a german kit http://www.qrpproject.de/UK/qrppa2008.html
73 de Giorgio IK3NLK

User Gravatar
LZ2JR said in February 25th, 2013 at 10:41

Hello Giorgio,
I am using CMOS version of Si570 without matching transformer at the output. I do placed low pass filter according to N6QW instructions. I removed VFO buffer stage from multiband bitex PCB. Also placed 9MHz low pass filter at the BFO 9MHz output. This cured “birdie” problem.
Soon I will start to assemble linear amplifier according to Andy’s instruction.
Regards,
Boris lz2jr

Leave a Reply

Your email address will not be published. Required fields are marked *


− 1 = 5

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

SSTV

The SSTV & ATV Ham WebRing
| Next | Previous | Random | List | Home/Join
ATV