tag:blogger.com,1999:blog-8234406140077819810.post3358872175574343320..comments2024-03-25T13:20:22.146-04:00Comments on Retrotechnologist: STANCOR 10P TRANSMITTERRoberta Xhttp://www.blogger.com/profile/09956807794520627885noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-8234406140077819810.post-43976822253713432592013-02-16T19:20:32.368-05:002013-02-16T19:20:32.368-05:00I still have a Atancor 10P. It was my dad's f...I still have a Atancor 10P. It was my dad's first transmitter as a 19 year old ham in 1942. I got my general in 1954 and he made me communicate at first via CW only, using the little Stancor 10P.<br />Bill Smith W0BCDAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-8234406140077819810.post-34603594419146238222011-07-18T22:32:38.504-04:002011-07-18T22:32:38.504-04:00Exactly! Tapped off the cathode self-bias resisto...Exactly! Tapped off the cathode self-bias resistor, an old trick but a good one.<br /><br /> The abundance of profitable transformaerage in even a low-power rig like this was perhaps the main reason outfits like Stancor, Utah, Thordarson, etc. offered them; that and building goodwill with likely repeat customers. Most of them did the same thing with PA/hi-fi amplifiers.Roberta Xhttps://www.blogger.com/profile/09956807794520627885noreply@blogger.comtag:blogger.com,1999:blog-8234406140077819810.post-20950294255384981652011-07-18T08:20:42.593-04:002011-07-18T08:20:42.593-04:00Three transformers and a choke in the PS - all Sta...Three transformers and a choke in the PS - all Stancor, I expect, and no wonder it's 14 pounds.<br />R17 is interesting. Bias adjustment for a carbon microphone?Ed Skinnerhttps://www.blogger.com/profile/09332424242231481277noreply@blogger.comtag:blogger.com,1999:blog-8234406140077819810.post-71527621182373630042011-07-18T07:32:27.673-04:002011-07-18T07:32:27.673-04:00Yes - the normally-closed key jack keys the transm...Yes - the normally-closed key jack keys the transmitter in AM mode and the switch in the CT of the plate transformer turns the B+ off and on.<br /><br /> You don't need it in CW mode, since the cathodes of both oscillator and RF amp are keyed.Roberta Xhttps://www.blogger.com/profile/09956807794520627885noreply@blogger.comtag:blogger.com,1999:blog-8234406140077819810.post-29028978817848150242011-07-18T00:49:37.126-04:002011-07-18T00:49:37.126-04:00What is the function of SW1 in the transformer sec...What is the function of SW1 in the transformer secondary? Is that the T/R switch?Turk Turonhttps://www.blogger.com/profile/02648721047835980871noreply@blogger.com