Thanks Jim. How come I couldn't find that PDF on the AM Window site? I must not have the secret decoder ring yet! LOL I would love to try a QSO on AM.
7PM is a bit to early for my to play Radio on a Friday night! I am a full time collage student at night, work full time during the day, and I'm married.. So there is that Honey doo list! ;) Maybe later? Bow W5EFR -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Candela Sent: Thursday, March 22, 2007 20:19 To: 'Discussion of AM Radio in the Amateur Service' Subject: RE: [AMRadio] New Guy to AM Bow, At the following link is a schematic of an AM rig that uses similar tubes. You could replace the 6AG7 with a 6V6 or 6K6, and replace the two 6LF6's with four 6DQ6's. This rig is good for 25 watts AM, and doesn't need a modulation transformer. The downside is the Class A series modulator, and the need for a +1100v B+. It sure is simple though, and should be easy to home brew. http://www.amwindow.org/tech/pdf/eckfinal2.pdf As for 30-40 watts AM between Houston, and Round Rock, you should be 5-9 here in the early evening until the band lengthens out. My main rig right now is a Gonset G76 that runs 55 watts AM, and I get out really well with it using an 80 FW loop up about 18'. This is a 'cloud burner' antenna that does really well out to about a 300 mile radius. This is perfect to talk to Houston. The trick with the Icom 718 will be to achieve full modulation rather than maximum carrier, and squishy modulation from overload or ALC popping. You are better at 25 watts carrier instead of 40. Maybe we can make a schedule for tomorrow evening at 7'ish? Jim JKO -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bow Sent: Friday, March 23, 2007 2:30 AM To: 'Discussion of AM Radio in the Amateur Service' Subject: RE: [AMRadio] New Guy to AM Hey Jim! I live on the northwest side of Houston, TX and I am on 75M, but only tried SSB so far, I don't think my screaming Icom IC-718 will do much with it's 30-40 watts of AM. My current tube stash consists of: 2- 815 2- 807W 3- 12SK7 1- 12A6 1- KT88 2- 6DQ6 3- 6L6 3- 6K6 1- EL34 1- 6V6 and several dual triode Preamp tubes... Is there any hope? LOL Bow W5EFR -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Candela Sent: Thursday, March 22, 2007 19:23 To: 'Discussion of AM Radio in the Amateur Service' Subject: RE: [AMRadio] New Guy to AM Bow, Welcome to the group! I hope this group provides you with knowledge and camaraderie from a bunch of fine folks who have a passion for AM. So where do you live? Do you work 75 meters? I don't have any experience with the 815, but I have heard that this is one of those tubes that suffers from imperfect vacuum seals, and many NOS 815's are bad now even though unused. Maybe some others can chime in on that comment. You can make a mighty fine AM rig out of three 807's, (1 RF final, and two P-P modulators) and when conservatory run will provide 15-30 watts of high quality AM. For more power something like a Heathkit SB-220 can transform this kind of rig to full legal AM power when the peaks extend up to ~ 1500 watts PEP with a resting carrier level at around 350 watts. Since you identify with the guitar amp circuit, this rig combo is like a Fender Champ acoustically coupled to a big solid state PA amplifier. Regards, Jim WD5JKO ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.16/729 - Release Date: 3/21/2007 07:52 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.16/729 - Release Date: 3/21/2007 07:52 ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.17/730 - Release Date: 3/22/2007 7:44 AM ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.16/729 - Release Date: 3/21/2007 07:52 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.17/730 - Release Date: 3/22/2007 07:44 ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
