Jordan, you are right. Meanwhile, I have also answered my own question... I believe that I momentarily forgot that the PTO frequency progression goes in reverse....
73, Jacques, VE2JFE in Montreal -----Message d'origine----- De : [email protected] <[email protected]> De la part de Jordan Arndt Envoyé : 8 novembre 2024 17:32 À : Jacques Fortin <[email protected]>; [email protected] Objet : Re: [R-390] PTO end point adjustment Jacques, I believe it is 2455 at +000... 73...Jordan VE6ZT ----- Original Message ----- From: "Jacques Fortin" <[email protected]> To: "'Jordan Arndt'" <[email protected]>; <[email protected]> Sent: Friday, November 08, 2024 3:03 PM Subject: RE: [R-390] PTO end point adjustment Sorry all, I believe that I got my Clockwise and Counter-clockwise moves in reverse... (again...) Can somebody confirm ?? In other words, what is the PTO output when the counter is at 7+000 MHz ?? 73, Jacques, VE2JFE in Montreal -----Message d'origine----- De : Jordan Arndt <[email protected]> Envoyé : 8 novembre 2024 16:25 À : Jacques Fortin <[email protected]>; [email protected] Objet : Re: [R-390] PTO end point adjustment Thanks Jacques... I've always done it without removing the PTO or the front panel...Now I have to find the tool I used to use...! 73...Jordan... ----- Original Message ----- From: "Jacques Fortin" <[email protected]> To: "'Jordan Arndt'" <[email protected]>; <[email protected]> Sent: Friday, November 08, 2024 1:03 PM Subject: RE: [R-390] PTO end point adjustment Hi Jordan, Y2K-R3, page 6-20 ! You zero-beat at 7+000 then goes down to 7.000 and adjust end point in PTO for zero beat. Up to 7+000 and re-zero beat with the BFO only. Back to 7.000 and re-zero beat with the end point, and loop again. Both ends sold be aligned after few iterations. But I neve aligned my PTO when they were IN the frame... I used an external supply, frequency counter and the alignment dial: Set PTO output to exactly 2.455MHz (almost fully clockwise) note the position on the alignment dial. Go back (counter-clockwise) exactly 10 turns to same alignment dial position. Set output to 3.455MHz exactly using the end point adjustment. Go up (clockwise) to 2.455 MHz exactly: expect dial reading change and take note of the new reading. Go back again 10 turns to this new dial reading. Set output again to 3.455MHz exactly using the end point adjustment. Loop again a couple of times: the two ends will converge to the same reading after few iterations. Once the end points give the same dial readings, re-install the PTO in the receiver with dial at 7+000 and PTO at 2.455 MHz positions. Check operation. 73, Jacques, VE2JFE in Montreal -----Message d'origine----- De : [email protected] <[email protected]> De la part de Jordan Arndt Envoyé : 8 novembre 2024 14:13 À : [email protected] Objet : [R-390] PTO end point adjustment It's been a long time since I had to adjust PTO end points and I need some advice as to the best method. Do I adjust the coil at the -000 end after setting the +000 end with the zero adjust or vice-versa..? Help...73...Jordan VE6ZT ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
