Ameco AC-1 type transmitter - HomeBrew Forum at eHam.net

$\'\'$

$\'\'$

$\'\'$

eHam.net Forum : HomeBrew : Ameco AC-1 type transmitter

Forum Help

1-6 of 6 messages

Page 1 of 1

Ameco AC-1 type transmitter	Reply
by WE5I on May 17, 2009	Mail this to a friend!
I'm building a transmitter based on the later Ameco AC-1 schematic. I need to know the amperage carrying values of the three 2.5 mH RF chokes. The schematic parts list http://members.cox.net/we5i/Images/AmecoAC1.pdf simply calls for 2.5 mH RF Chokes, but when I go to buy RF chokes, choices have to be made as to amperage capacity and self-resonace, etc. Does anyone know specifically what RF chokes belong in the Ameco AC-1? Thanks and 73. Graham Welch - WE5I

RE: Ameco AC-1 type transmitter	Reply
by W7ETA on May 17, 2009	Mail this to a friend!
I think I bought mine, for a dual 6L6 xmitter from Mouser, 100ma 2,5mh. I found these, 160ma: http://www.oselectronics.com/ose_p91.htm#3-Pi%20CHOKES 73 Bob

RE: Ameco AC-1 type transmitter	Reply
by WB2WIK on May 17, 2009	Mail this to a friend!
I agree, 200mA should be plenty and probably 100mA would be sufficient.

RE: Ameco AC-1 type transmitter	Reply
by W7ETA on May 17, 2009	Mail this to a friend!
I remember when I bought them that I was surprised they were less expensive than ones on eBay, plus, I was able to order all resistors, caps etc from them at the same time. Xformer, choke, and variable caps for the Pi network came from eBay. I bought the knobs from the place Steve bought wire by the pound from. Best from Tucson Bob

RE: Ameco AC-1 type transmitter	Reply
by N2EY on May 18, 2009	Mail this to a friend!
It's really very simple. The AC-1 is rated 15 watts and has plate voltage of at least 250 volts. P = E x I so the plate current cannot be more than about 60 mA. If the plate voltage is higher, the plate current is less. The rectifier in the AC-1 is rated for 70 mA maximum, too. 100 mA RF chokes are more than adequate. Get air-core ones. 73 de Jim, N2EY

RE: Ameco AC-1 type transmitter	Reply
by W7ETA on May 18, 2009	Mail this to a friend!
http://cgi.ebay.com/Transmitter-HOME-BREW-TRANSMITTER-POWER-SUPPLY_W0QQitemZ330330155985QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item4ce9362bd1&_trksid=p3286.c0.m14&_trkparms=66%3A2\|65%3A10\|39%3A1\|240%3A1318\|301%3A0\|293%3A3\|294%3A50

Page 1 of 1

Next Topic: FT-817 and LDG Z-100 Dipole Recommendations?
Previous Topic: Photographs of my new HBR-11 Homebrew Receiver

Email Subscription
You are not subscribed to this topic.

Check our help page for help using Forum, or send questions, comments, or suggestions to the Forum Manager.

$\'\'$