[AMRadio] Heath Apache symptoms
Hello, fellow AM folks! I would like to hear from those intimately familiar with the Heath Apache. I think my Apache needs some TLC. It is working and gets good reports on strength and audio, however: I note that when keyed up, after loading and dipping the finals, that the plate current starts out lower than the tune up and then starts creeping up. My experience over 50 years as a Ham has convinced me that creeping plate current is usually a sign of screens in the final tubes going bad. In fact I once had a Hallicrafters HT 32B that had creeping plate current when the 6146 tube screens began going bad. In fact, if I didn't increase the bias on the tubes, they would eventually run away and self destruct. The finals in my Apache do not run away they just go from lower current at tune up and rise to slightly more current than at tune up. I think that my grid drive is also marginal because it takes all the available grid drive to set it at the rated and desired level of drive. The drive control must be at extreme maximum, fully clockwise. This could be related to creeping plate current. What do you think? In addition, I note some downward movement of the plate current of the final amplifier upon modulation. Lack of grid drive may cause this problem if I remember correctly. In addition, I seem to feel that over coupling of the output of the final tank circuit might also contribute to the downward modulation? I recently replaced the 6AQ5 clamper tube but did not readjust the circuit after replacement. I would like some input from you who have the knowledge and experience to discuss these symptoms. I want to have this discussion before I start trying to wrestle this Green Monster out of its' cabinet. I am not as strong as I was when I became a Novice over 50 years ago. Before you laugh, let me say that if you are LUCKY, maybe you will live to get WEAK!! Hi!! HI!! You may address this issue off the reflector if you prefer. I don't want to bore the other members with a topic that may not be of interest to them. After all, the majority of hams feel that AM is a relic of the past. I enjoy AM, SSB and CW. Thanks in advance and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
[AMRadio] even noise sometimes is good
For the amateur radio world, even noise sometimes is good. Pete, wa2cwa You mean like this mailing list? hihihi Joe n3iqa __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
[AMRadio] FW: Heath Apache symptoms
Amen John! When I first bought a DX-100 at a swap, I took it to work and carried it up two flights to the workshop. (worked for a radio station) Got it up there and thought dang, I must be getting old 'er something Sat down, put feet up to read to my horror the !...@#$%^*() weighed 100 lbs soaking wet. I had the freight elevator take it down... As the owner of two Apaches, I'd like to see the answers posted to the list George wa8sco - I am not as strong as I was when I became a Novice over 50 years ago. Before you laugh, let me say that if you are LUCKY, maybe you will live to get WEAK!! Hi!! HI!! Thanks in advance and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] FW: Heath Apache symptoms
I accidentally erased the original message so replying here. With drifting plate current and low grid drive the first thing I would check is the adjustment of the clamp tube circuit. Low grid drive will cause the clamp tube to reduce screen voltage. Or maybe the clamp circuit is adjusted right and you just don't have enough grid drive. All bands?? 73 Gary K4FMX -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio- boun...@mailman.qth.net] On Behalf Of George Brand Sent: Wednesday, January 07, 2009 11:23 AM To: amradio@mailman.qth.net Subject: [AMRadio] FW: Heath Apache symptoms Amen John! When I first bought a DX-100 at a swap, I took it to work and carried it up two flights to the workshop. (worked for a radio station) Got it up there and thought dang, I must be getting old 'er something Sat down, put feet up to read to my horror the !...@#$%^*() weighed 100 lbs soaking wet. I had the freight elevator take it down... As the owner of two Apaches, I'd like to see the answers posted to the list George wa8sco - I am not as strong as I was when I became a Novice over 50 years ago. Before you laugh, let me say that if you are LUCKY, maybe you will live to get WEAK!! Hi!! HI!! Thanks in advance and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] Heath Apache symptoms
As pointed out in another post, check the clamp circuit adjustments. For grid drive, check the grid meter resistor (5.55 ohms) and/or use an outboard meter to verify your Apache grid reading. Weak finals can also cause plate current to creep. Check your low voltage supply section. Pete, wa2cwa On Wed, 7 Jan 2009 04:03:16 -0800 (PST) John King k5...@yahoo.com writes: Hello, fellow AM folks! I would like to hear from those intimately familiar with the Heath Apache. I think my Apache needs some TLC. It is working and gets good reports on strength and audio, however: I note that when keyed up, after loading and dipping the finals, that the plate current starts out lower than the tune up and then starts creeping up. My experience over 50 years as a Ham has convinced me that creeping plate current is usually a sign of screens in the final tubes going bad. In fact I once had a Hallicrafters HT 32B that had creeping plate current when the 6146 tube screens began going bad. In fact, if I didn't increase the bias on the tubes, they would eventually run away and self destruct. The finals in my Apache do not run away they just go from lower current at tune up and rise to slightly more current than at tune up. I think that my grid drive is also marginal because it takes all the available grid drive to set it at the rated and desired level of drive. The drive control must be at extreme maximum, fully clockwise. This could be related to creeping plate current. What do you think? In addition, I note some downward movement of the plate current of the final amplifier upon modulation. Lack of grid drive may cause this problem if I remember correctly. In addition, I seem to feel that over coupling of the output of the final tank circuit might also contribute to the downward modulation? I recently replaced the 6AQ5 clamper tube but did not readjust the circuit after replacement. I would like some input from you who have the knowledge and experience to discuss these symptoms. I want to have this discussion before I start trying to wrestle this Green Monster out of its' cabinet. I am not as strong as I was when I became a Novice over 50 years ago. Before you laugh, let me say that if you are LUCKY, maybe you will live to get WEAK!! Hi!! HI!! You may address this issue off the reflector if you prefer. I don't want to bore the other members with a topic that may not be of interest to them. After all, the majority of hams feel that AM is a relic of the past. I enjoy AM, SSB and CW. Thanks in advance and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] Latest Completed Project, or How I Spent My Christmas Vacation
Absolutely outstanding!!! Maybe he should consider a kit! or not! Ron H -- This outgoing email was scanned by Norton Antivirus Corp. Edition and found to be virus free! - Original Message - From: Larry Szendrei To: Glowbugs List ; Reflector,AM ; Reflector,AWA Sent: Tuesday, January 06, 2009 8:03 AM Subject: [AMRadio] Latest Completed Project,or How I Spent My Christmas Vacation ...can be viewed at: http://www.w1ujr.net/gift_from_ne1s.htm 73, -Larry/NE1S __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.__ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] Latest Completed Project, or How I Spent My Christmas Vacation
Now, when are you making mine? ;) Mod-U-Lator, Mike(y) W3SLK - Original Message - From: Larry Szendrei n...@neandertech.com To: Glowbugs List glowb...@piobaire.mines.uidaho.edu; Reflector, AM amradio@mailman.qth.net; Reflector, AWA antiquewirelessassociat...@yahoogroups.com Sent: Tuesday, January 06, 2009 9:03 AM Subject: [AMRadio] Latest Completed Project,or How I Spent My Christmas Vacation ...can be viewed at: http://www.w1ujr.net/gift_from_ne1s.htm 73, -Larry/NE1S __ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] Heath Apache symptoms
Hmmm, as an Apache man my self, 9 chances out of 10 I would say check out in and around that clamp tube. It almost sounds directly related to heat, (Ip goes up the longer the radio is keyed). Might be some bad R's. When you find it, post your findings here since I for one would be very interested. Mod-U-Lator, Mike(y) W3SLK - Original Message - From: John King k5...@yahoo.com To: amradio@mailman.qth.net Sent: Wednesday, January 07, 2009 7:03 AM Subject: [AMRadio] Heath Apache symptoms Hello, fellow AM folks! I would like to hear from those intimately familiar with the Heath Apache. I think my Apache needs some TLC. It is working and gets good reports on strength and audio, however: I note that when keyed up, after loading and dipping the finals, that the plate current starts out lower than the tune up and then starts creeping up. My experience over 50 years as a Ham has convinced me that creeping plate current is usually a sign of screens in the final tubes going bad. In fact I once had a Hallicrafters HT 32B that had creeping plate current when the 6146 tube screens began going bad. In fact, if I didn't increase the bias on the tubes, they would eventually run away and self destruct. The finals in my Apache do not run away they just go from lower current at tune up and rise to slightly more current than at tune up. I think that my grid drive is also marginal because it takes all the available grid drive to set it at the rated and desired level of drive. The drive control must be at extreme maximum, fully clockwise. This could be related to creeping plate current. What do you think? In addition, I note some downward movement of the plate current of the final amplifier upon modulation. Lack of grid drive may cause this problem if I remember correctly. In addition, I seem to feel that over coupling of the output of the final tank circuit might also contribute to the downward modulation? I recently replaced the 6AQ5 clamper tube but did not readjust the circuit after replacement. I would like some input from you who have the knowledge and experience to discuss these symptoms. I want to have this discussion before I start trying to wrestle this Green Monster out of its' cabinet. I am not as strong as I was when I became a Novice over 50 years ago. Before you laugh, let me say that if you are LUCKY, maybe you will live to get WEAK!! Hi!! HI!! You may address this issue off the reflector if you prefer. I don't want to bore the other members with a topic that may not be of interest to them. After all, the majority of hams feel that AM is a relic of the past. I enjoy AM, SSB and CW. Thanks in advance and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] Heath Apache symptoms
If I might make a suggestion, Check the ground lugs around the clamp tube and vicinity. Make sure they are tight, and also check for any signs of arcing. Jim WB2FCN Three working Apaches and counting. - Original Message - From: Mike Sawyer w3...@verizon.net To: k5...@yahoo.com; Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Wednesday, January 07, 2009 9:08 PM Subject: Re: [AMRadio] Heath Apache symptoms Hmmm, as an Apache man my self, 9 chances out of 10 I would say check out in and around that clamp tube. It almost sounds directly related to heat, (Ip goes up the longer the radio is keyed). Might be some bad R's. When you find it, post your findings here since I for one would be very interested. Mod-U-Lator, Mike(y) W3SLK - Original Message - From: John King k5...@yahoo.com To: amradio@mailman.qth.net Sent: Wednesday, January 07, 2009 7:03 AM Subject: [AMRadio] Heath Apache symptoms Hello, fellow AM folks! I would like to hear from those intimately familiar with the Heath Apache. I think my Apache needs some TLC. It is working and gets good reports on strength and audio, however: I note that when keyed up, after loading and dipping the finals, that the plate current starts out lower than the tune up and then starts creeping up. My experience over 50 years as a Ham has convinced me that creeping plate current is usually a sign of screens in the final tubes going bad. In fact I once had a Hallicrafters HT 32B that had creeping plate current when the 6146 tube screens began going bad. In fact, if I didn't increase the bias on the tubes, they would eventually run away and self destruct. The finals in my Apache do not run away they just go from lower current at tune up and rise to slightly more current than at tune up. I think that my grid drive is also marginal because it takes all the available grid drive to set it at the rated and desired level of drive. The drive control must be at extreme maximum, fully clockwise. This could be related to creeping plate current. What do you think? In addition, I note some downward movement of the plate current of the final amplifier upon modulation. Lack of grid drive may cause this problem if I remember correctly. In addition, I seem to feel that over coupling of the output of the final tank circuit might also contribute to the downward modulation? I recently replaced the 6AQ5 clamper tube but did not readjust the circuit after replacement. I would like some input from you who have the knowledge and experience to discuss these symptoms. I want to have this discussion before I start trying to wrestle this Green Monster out of its' cabinet. I am not as strong as I was when I became a Novice over 50 years ago. Before you laugh, let me say that if you are LUCKY, maybe you will live to get WEAK!! Hi!! HI!! You may address this issue off the reflector if you prefer. I don't want to bore the other members with a topic that may not be of interest to them. After all, the majority of hams feel that AM is a relic of the past. I enjoy AM, SSB and CW. Thanks in advance and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] Heath Apache symptoms
When working on Heathkit equipment, always suspect the resistors. The combination of the type or quality of resistors used byt Heath, with the passage of many years, results in quite a few of their resistors well out of tolerance, or far up or down in value, or even changing resistance under load. Steve WD8DAS sbjohns...@aol.com http://www.wd8das.net/ - Radio is your best entertainment value. - -Original Message- From: John King k5...@yahoo.com To: amradio@mailman.qth.net Sent: Wed, 7 Jan 2009 6:03 am Subject: [AMRadio] Heath Apache symptoms Hello, fellow AM folks! I would like to hear from those intimately familiar with the Heath Apache. I think my Apache needs some TLC. It is working and gets good reports on strength and audio, however: I note that when keyed up, after loading and dipping the finals, that the plate current starts out lower than the tune up and then starts creeping up. My experience over 50 years as a Ham has convinced me that creeping plate current is usually a sign of screens in the final tubes going bad. In fact I once had a Hallicrafters HT 32B that had creeping plate current when the 6146 tube screens began going bad. In fact, if I didn't increase the bias on the tubes, they would eventually run away and self destruct. The finals in my Apache do not run away they just go from lower current at tune up and rise to slightly more current than at tune up. I think that my grid drive is also marginal because it takes all the available grid drive to set it at the rated and desired level of drive. The drive control must be at extreme maximum, fully clockwise. This could be related to creeping plate current. What do you think? In addition, I note some downward movement of the plate current of the final amplifier upon modulation. Lack of grid drive may cause this problem if I remember correctly. In addition, I seem to feel that over coupling of the output of the final tank circuit might also contribute to the downward modulation? I recently replaced the 6AQ5 clamper tube but did not readjust the circuit after replacement. I would like some input from you who have the knowledge and experience to discuss these symptoms. I want to have this discussion before I start trying to wrestle this Green Monster out of its' cabinet. I am not as strong as I was when I became a Novice over 50 years ago. Before you laugh, let me say that if you are LUCKY, maybe you will live to get WEAK!! Hi!! HI!! You may address this issue off the reflector if you prefer. I don't want to bore the other members with a topic that may not be of interest to them. After all, the majority of hams feel that AM is a relic of the past. I enjoy AM, SSB and CW. Thanks in advance and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] Heath Apache symptoms
I can say Amen to this. One of the biggest failure modes for Heath kits is loose hardware. I've heard this many times on the Heathkit reflector. I bought an Apache for parts to fix one I had bought earlier and did not find ONE screw that was beyond finger tight. Whoever had this unit attempted to fix DC, RF and or audio problems by running a bare 18 ga. copper wire ground buss through the entire transmitter even in the VFO box. If at first you don't succeed, try really goofing it up! It all worked out well for me, the first Apachie was immaculent inside (someone had hacked a big hole in the cabinet for what was probably a muffin fan or some such. and most of the original knobs were gone) and the second was immaculent outside, so between them both you see I licked the platter clean..I mean have a complete transmitter. 73's de Bill AD5OL - Original Message From: James M. Walker che...@buffalo.edu To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Wednesday, January 7, 2009 8:25:02 PM Subject: Re: [AMRadio] Heath Apache symptoms If I might make a suggestion, Check the ground lugs around the clamp tube and vicinity. Make sure they are tight, and also check for any signs of arcing. Jim WB2FCN Three working Apaches and counting. - Original Message - From: Mike Sawyer w3...@verizon.net To: k5...@yahoo.com; Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Wednesday, January 07, 2009 9:08 PM Subject: Re: [AMRadio] Heath Apache symptoms Hmmm, as an Apache man my self, 9 chances out of 10 I would say check out in and around that clamp tube. It almost sounds directly related to heat, (Ip goes up the longer the radio is keyed). Might be some bad R's. When you find it, post your findings here since I for one would be very interested. Mod-U-Lator, Mike(y) W3SLK - Original Message - From: John King k5...@yahoo.com To: amradio@mailman.qth.net Sent: Wednesday, January 07, 2009 7:03 AM Subject: [AMRadio] Heath Apache symptoms Hello, fellow AM folks! I would like to hear from those intimately familiar with the Heath Apache. I think my Apache needs some TLC. It is working and gets good reports on strength and audio, however: I note that when keyed up, after loading and dipping the finals, that the plate current starts out lower than the tune up and then starts creeping up. My experience over 50 years as a Ham has convinced me that creeping plate current is usually a sign of screens in the final tubes going bad. In fact I once had a Hallicrafters HT 32B that had creeping plate current when the 6146 tube screens began going bad. In fact, if I didn't increase the bias on the tubes, they would eventually run away and self destruct. The finals in my Apache do not run away they just go from lower current at tune up and rise to slightly more current than at tune up. I think that my grid drive is also marginal because it takes all the available grid drive to set it at the rated and desired level of drive. The drive control must be at extreme maximum, fully clockwise. This could be related to creeping plate current. What do you think? In addition, I note some downward movement of the plate current of the final amplifier upon modulation. Lack of grid drive may cause this problem if I remember correctly. In addition, I seem to feel that over coupling of the output of the final tank circuit might also contribute to the downward modulation? I recently replaced the 6AQ5 clamper tube but did not readjust the circuit after replacement. I would like some input from you who have the knowledge and experience to discuss these symptoms. I want to have this discussion before I start trying to wrestle this Green Monster out of its' cabinet. I am not as strong as I was when I became a Novice over 50 years ago. Before you laugh, let me say that if you are LUCKY, maybe you will live to get WEAK!! Hi!! HI!! You may address this issue off the reflector if you prefer. I don't want to bore the other members with a topic that may not be of interest to them. After all, the majority of hams feel that AM is a relic of the past. I enjoy AM, SSB and CW. Thanks in advance and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives:
