Dennis Petersen: Nice review and too bad it's not offered in kit form anymore. Thanks and 73s
incubusman421: Does anybody make BFOs these days? I know Ten-Tec stopped making the kits.
mnpd3: I built one of those kits too.... works fine on some radios but not on others; depends on the receiver's IF frequency. Normally you only have to place the BFO next to the radio; with other rigs you need to clip it to the radio's antenna. Last time I broke out the BFO I found it no longer worked :(. Something else to fix I guess.
DoomsdayDarin: The full details of the Ten Tec 1050 kit can be found in the Nov 2000 (11-2000) issue of 73 Amateur Radio Today magazine pages 22 and 23. This magazine can be viewed for free on the Internet Archive website.
leiderwanwer reises: ola colega vc pode me mandar os esquemas deste BFO ficou muito bom ...... email@example.com
leiderwanwer reises: ola amigo gostei muito do seu oscilador .....BFO vc poderia me mandar os esquemas te agradeço firstname.lastname@example.org...............email@example.com
WX9DX: I have built and installed these Ten Tec BFO kits in lots of AM only radios. Even into CB radios so they could hear sideband. The other cool thing they make a neat kit for people learning electronics to get used to soldering and alignment etc. Lots of cool theory for them to learn in building this kit. Thanks Jimmy, ARRL TC, WX9DX
Glaiza Heyrosa: hi friend, can u send a bfo circuit diagram. reply. tks.
dani grg: hello ...wow.. nice... please send me circuit diagram..
NG9D: Amigo. O transístor usado neste circuito é NPN TT25054 (substituto para MPS6514). 73 Lynn NG9D
Wander Lucio Gomes: Amigo. Qual é o Transistor utilizado nesse circuito?
NG9D: Olá, você pode encontrar usando imagens do Google de busca palavras-chave: (You can find schematic using Google image search using key words) 455 khz bfo schematic ten tec
73 Lynn - NG9D
leiderwanwer reises: ei amigo vc me mandaria esse esquema OFB te agradeço ficou muito bom firstname.lastname@example.org
A Ebel: I got this kit, but cannot get it demodulate SSB signals, because the transistor that came with the kit went missing. I used a PN2222A NPN transistor and it's oscillating, but it's tuning narrow. Do I need to use the required transistor called the 2N4124? The radio I am using is the S450DLX with a 455 kHz output jack.
A Ebel: How do you connect this to a short wave boombox? By the antenna input? Or do I have to go inside the connect it IF AM output connection?
Marco Hofschneider: What about the zillions or older radios out there that use an IF of 460 khz, like the vintage Grundigs for example?
鄭 倍: how to installation of sangean SG-721
Chris Freitas: Wow! That receiver brings back fond memories. Aside from an old Sears multiband I got from a friend, the RadioShack DX-397 was my very first shortwave radio. On my 15th birthday, my Dad and a family friend took me to my hometown's RadioShack and picked it up for $40. I loved that radio. Unfortunately, it wasn't able to pick up many stations over the years, but it was great when it worked. My dad still has that radio along with a Grundig Mini World 300 that I gave him 3 years ago.
F4EPU: Nice realisation!
73s David F4EPU
Radionut R: How does it hook up to the radio? Unclear BUT looks like fun!!!