leiderwanwer reises: ola colega vc pode me mandar os esquemas deste BFO ficou muito bom
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.
Jimmy, ARRL TC, WX9DX
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.
Glaiza Heyrosa: hi friend, can u send a bfo circuit diagram. reply. tks.
dani grg: hello ...wow.. nice... please send me circuit diagram..
sparkdetect: I built one of these...I had to re-tune the ferrite slug often as I tuned
across a ham band, and worse, the drift was unacceptable; I had to
constantly adjust the tuning knob. Would be nice if they brought out a new
kit with better stability.
timeanagain: Are special tools needed for this kit build? Could a beginner build it? I
passed the Novice license exam about 25 years ago, but never got started in
Ham radio. Would love to practice receiving morse code again. I can't seem
to find and inexpensive radio with BFO on it. Any suggestions for that
Radionut R: How does it hook up to the radio? Unclear BUT looks like fun!!!
Marco Hofschneider: What about the zillions or older radios out there that use an IF of 460
khz, like the vintage Grundigs for example?
F4EPU: Nice realisation! 73s David F4EPU
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.
Wander Lucio Gomes: Amigo. Qual é o Transistor utilizado nesse circuito?
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?
timeanagain: Thanks for the info. Ordered the kit and will give it a go.
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
NG9D: For great CW practice I think the TenTec T1056 Receiver Kit would be ideal.
I am making one now for 40m -- in my opinion, 40 m is one of the most
reliable bands for CW/Morse code reception. I have made T1056 boards for 20
and 160m, and they both work great! A 25W soldering iron, diagonal cutters,
small screwdriver and needle nose pliers are about the only tools needed to
build the receiver kit. Practicing CW on a radio you made yourself is a lot
of fun! 73 de NG9D . .
鄭 倍: how to installation of sangean SG-721
NG9D: Vielen Dank Radio macht Spaß 73 de Lynn NG9D
leiderwanwer reises: ei amigo vc me mandaria esse esquema OFB te agradeço ficou muito bom
Shortwave68: Very interesting video! Good job! Greetings from Germany!!
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.
NG9D: OH2FFY DE NG9D Hi Greg, I had to *edit* that part to keep my video
"politically correct" ;-) 73 Lynn NG9D . .
NG9D: Amigo. O transístor usado neste circuito é NPN TT25054 (substituto para
MPS6514). 73 Lynn NG9D