hello,
I need a varaible 490-510 uH coil. any sugestions on making it at
home, or beter step by step directions.

thanks in advice,
beginer
73

hello,
I need a varaible 490-510 uH coil. any sugestions on making it at
home, or beter step by step directions.


Need some additional info first. What kind of coil and what are you using it
for?

hello,
I need a varaible 490-510 uH coil. any sugestions on making it at
home, or beter step by step directions.


Need some additional info first. What kind of coil and what are you using it
for?

Need some additional info first. What kind of coil and what are you using it
for?

I am building one transistor colpitts oscilator, it will act as BFO
for my AM radio so I could receive SSB.

Need some additional info first. What kind of coil and what are you using it
for?

I am building one transistor colpitts oscilator, it will act as BFO
for my AM radio so I could receive SSB.

"Harold E. Johnson" wrote in message news:6HdYa.81693$Ho3.10686@sccrnsc03...
I am building one transistor colpitts oscilator, it will act as BFO
for my AM radio so I could receive SSB.

Just use the primary of a IF can. Most already have the resonating cap built
in to the bottom of the can. If it's for 455 KHz, and you don't have any,
send me a snail mail address and I'll send you a couple.

W4ZCB

My radio IF is 465kHz.
It is a old radio, Russian made.

"Harold E. Johnson" wrote in message news:6HdYa.81693$Ho3.10686@sccrnsc03...
I am building one transistor colpitts oscilator, it will act as BFO
for my AM radio so I could receive SSB.

Just use the primary of a IF can. Most already have the resonating cap built
in to the bottom of the can. If it's for 455 KHz, and you don't have any,
send me a snail mail address and I'll send you a couple.

W4ZCB

My radio IF is 465kHz.
It is a old radio, Russian made.

455-465, close enough that retuning the slug should work fine. If you still
haven't found one, send me a mailing address and I'll "tune" one for you.

Regards

W4ZCB
I am building one transistor colpitts oscilator, it will act as BFO
for my AM radio so I could receive SSB.

Just use the primary of a IF can. Most already have the resonating cap
built
in to the bottom of the can. If it's for 455 KHz, and you don't have
any,
send me a snail mail address and I'll send you a couple.

W4ZCB

My radio IF is 465kHz.
It is a old radio, Russian made.

455-465, close enough that retuning the slug should work fine. If you still
haven't found one, send me a mailing address and I'll "tune" one for you.

Regards

W4ZCB
I am building one transistor colpitts oscilator, it will act as BFO
for my AM radio so I could receive SSB.

Just use the primary of a IF can. Most already have the resonating cap
built
in to the bottom of the can. If it's for 455 KHz, and you don't have
any,
send me a snail mail address and I'll send you a couple.

W4ZCB

My radio IF is 465kHz.
It is a old radio, Russian made.