Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 3 Vote(s) - 2.33 Average
  • 1
  • 2
  • 3
  • 4
  • 5

AM transmitter build - by Tim
#13

I have been studying the circuit Sam posted and I can see several things l like about it. One in particular, and that is the tuning cap is not connected to B+. That had bothered me, since that is a pretty large part to have that kind voltage on it. Then, there was the isolation issue. With this circuit, the tuning cap can be mounted directly to the chassis to ground. Really simplifies things. I am mocking up a potential layout.  I will post some pics of the idea and see what you all think. I want to avoid feedback, hum and noise.

If I could find the place called "Somewhere", I could find "Anything" Icon_confused

Tim

Jesus cried out and said, "Whoever believes in me , believes not in me but in him who sent me" John 12:44


Messages In This Thread
AM transmitter build - by Tim - by TV MAN - 03-01-2018, 02:48 PM
RE: AM transmitter build - by Tim - by TV MAN - 03-01-2018, 02:58 PM
RE: AM transmitter build - by Tim - by sam - 03-01-2018, 03:51 PM
RE: AM transmitter build - by Tim - by fenbach - 03-01-2018, 09:08 PM
RE: AM transmitter build - by Tim - by 35Z5 - 03-01-2018, 11:35 PM
RE: AM transmitter build - by Tim - by TV MAN - 03-02-2018, 12:00 AM
RE: AM transmitter build - by Tim - by TV MAN - 03-02-2018, 12:32 AM
RE: AM transmitter build - by Tim - by 35Z5 - 03-02-2018, 12:29 PM
RE: AM transmitter build - by Tim - by Phlogiston - 03-02-2018, 01:29 PM
RE: AM transmitter build - by Tim - by TV MAN - 03-02-2018, 03:48 PM
RE: AM transmitter build - by Tim - by sam - 03-05-2018, 02:14 PM
RE: AM transmitter build - by Tim - by TV MAN - 03-09-2018, 12:37 PM
RE: AM transmitter build - by Tim - by Phlogiston - 03-10-2018, 11:33 AM
RE: AM transmitter build - by Tim - by TV MAN - 03-10-2018, 01:13 PM
RE: AM transmitter build - by Tim - by Phlogiston - 03-10-2018, 01:22 PM
RE: AM transmitter build - by Tim - by 35Z5 - 03-10-2018, 03:20 PM
RE: AM transmitter build - by Tim - by sam - 03-11-2018, 06:30 PM
RE: AM transmitter build - by Tim - by TV MAN - 03-21-2018, 10:56 PM
RE: AM transmitter build - by Tim - by TV MAN - 03-23-2018, 12:11 AM
RE: AM transmitter build - by Tim - by 35Z5 - 03-23-2018, 09:37 PM
RE: AM transmitter build - by Tim - by TV MAN - 03-24-2018, 08:36 PM
RE: AM transmitter build - by Tim - by TV MAN - 03-26-2018, 11:30 PM
RE: AM transmitter build - by Tim - by 35Z5 - 03-28-2018, 07:52 AM
RE: AM transmitter build - by Tim - by TV MAN - 04-08-2018, 03:54 PM
RE: AM transmitter build - by Tim - by TV MAN - 10-29-2018, 10:01 AM
RE: AM transmitter build - by Tim - by EdHolland - 11-02-2018, 12:08 AM
RE: AM transmitter build - by Tim - by morzh - 11-02-2018, 11:18 AM
RE: AM transmitter build - by Tim - by EdHolland - 11-02-2018, 04:50 PM
RE: AM transmitter build - by Tim - by TV MAN - 11-05-2018, 02:40 PM
RE: AM transmitter build - by Tim - by jcassity - 11-07-2018, 04:34 PM
RE: AM transmitter build - by Tim - by TV MAN - 11-12-2018, 01:00 PM
RE: AM transmitter build - by Tim - by TV MAN - 11-20-2018, 06:47 PM
RE: AM transmitter build - by Tim - by Eliot Ness - 11-20-2018, 09:13 PM
RE: AM transmitter build - by Tim - by TV MAN - 11-25-2018, 06:30 PM
RE: AM transmitter build - by Tim - by KCMike - 11-25-2018, 06:56 PM
RE: AM transmitter build - by Tim - by Phlogiston - 11-25-2018, 07:17 PM
RE: AM transmitter build - by Tim - by TV MAN - 11-26-2018, 12:00 PM
RE: AM transmitter build - by Tim - by TV MAN - 11-26-2018, 05:07 PM
RE: AM transmitter build - by Tim - by TV MAN - 11-30-2018, 09:19 PM
RE: AM transmitter build - by Tim - by TV MAN - 11-30-2018, 09:30 PM
RE: AM transmitter build - by Tim - by 35Z5 - 11-30-2018, 10:44 PM
RE: AM transmitter build - by Tim - by TV MAN - 12-14-2018, 06:38 PM
RE: AM transmitter build - by Tim - by EdHolland - 12-14-2018, 08:24 PM
RE: AM transmitter build - by Tim - by TV MAN - 12-15-2018, 11:02 AM
RE: AM transmitter build - by Tim - by Phlogiston - 12-23-2018, 12:27 PM
RE: AM transmitter build - by Tim - by TV MAN - 01-29-2019, 02:00 PM
RE: AM transmitter build - by Tim - by TV MAN - 01-29-2019, 02:28 PM
RE: AM transmitter build - by Tim - by sam - 01-29-2019, 02:38 PM



Users browsing this thread: 14 Guest(s)
[-]
Recent Posts
New member
Love the pic! I'm southern IL, so wouldn't be much help and Bob Anderson is very good on those, but lives in Chicago are...TV MAN — 05:25 PM
Philco 40-120C Filament Wiring
:thumbup:klondike98 — 04:56 PM
Philco 40-120C Filament Wiring
With these values I think you are OK; the Cmax for this tube is 40uF. Your Vbb could rise a bit, but probably not too mu...morzh — 04:53 PM
Philco 40-120C Filament Wiring
BTW, someone had replaced the original 20uF/20uF filter cap with a 47uF/33uF cap. Do you think these values are safe on ...bluecap — 04:33 PM
Philco 40-120C Filament Wiring
You're correct. I was misinterpreting the key position. I now know where it is, and things are making sense. I appreciat...bluecap — 04:29 PM
Philco 40-120C Filament Wiring
I think Morzh has a good thought. Check the key position. The under chassis diagram in the Philco info shows an “H” for ...klondike98 — 04:25 PM
Philco 630csx power cord
Yes, the third wire goes to the stud on the side and is separate from the other two. I've usually used cloth covered ...Tynwald — 03:09 PM
New member
Have you tried Alabama Historical Radio Society? They possibly could recommend someone. I remember a name of Dee Hanes...morzh — 03:08 PM
Philco 46-480 Electronic Restoration
Nope, he can’t tell me the dimensions. Looks like I won’t be buying it.jrblasde — 02:38 PM
Philco 46-480 Electronic Restoration
Hello Joseph , It sounds like you found a good seller and yes shipping is really expensive ! Sincerely Richardradiorich — 02:16 PM

[-]
Who's Online
There are currently 2565 online users. [Complete List]
» 4 Member(s) | 2561 Guest(s)
AvatarAvatarAvatarAvatar

>