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"Bob M." wrote: "chafik CN8JV" wrote in message m... hello my friends I am using icom 706 MKII on LSB, I get bad reports about audio and modulation quality, and the output power is too low. but on USB the output power is normal with good audio quality and modulation! any idea please thanks 73 CN8JV Is the radio aligned properly? It's easy to check but if it's out of alignment, it needs to go to a radio shop to be fixed since proper calibration tools are needed. To hear if it's aligned right: - In AM mode, tune to a time station, such as CHU or WWV. - Now listen to the station in both LSB and USB modes. Is the sound of the clock tick the same, or close? If so the rig is aligned properly. If they don't sound the same, the rig is out of alignment. Don't try it on CHU. They transmit a carrier and USB only. Dave |
Minor problem with the alignment scenario. There is NO ALIGNMENT for the
carrier oscillators. They come from a DDS chip controlled by the uPC. -- Clif Holland, KA5IPF AVVid Authorized Kenwood and Icom Service Center 816 W Shady Grove Rd Irving, TX 75060 www.avvid.com 1-800-214-5779 972-870-0630 (local) "Dave Holford" wrote in message ... "Bob M." wrote: "chafik CN8JV" wrote in message m... hello my friends I am using icom 706 MKII on LSB, I get bad reports about audio and modulation quality, and the output power is too low. but on USB the output power is normal with good audio quality and modulation! any idea please thanks 73 CN8JV Is the radio aligned properly? It's easy to check but if it's out of alignment, it needs to go to a radio shop to be fixed since proper calibration tools are needed. To hear if it's aligned right: - In AM mode, tune to a time station, such as CHU or WWV. - Now listen to the station in both LSB and USB modes. Is the sound of the clock tick the same, or close? If so the rig is aligned properly. If they don't sound the same, the rig is out of alignment. Don't try it on CHU. They transmit a carrier and USB only. Dave |
Minor problem with the alignment scenario. There is NO ALIGNMENT for the
carrier oscillators. They come from a DDS chip controlled by the uPC. -- Clif Holland, KA5IPF AVVid Authorized Kenwood and Icom Service Center 816 W Shady Grove Rd Irving, TX 75060 www.avvid.com 1-800-214-5779 972-870-0630 (local) "Dave Holford" wrote in message ... "Bob M." wrote: "chafik CN8JV" wrote in message m... hello my friends I am using icom 706 MKII on LSB, I get bad reports about audio and modulation quality, and the output power is too low. but on USB the output power is normal with good audio quality and modulation! any idea please thanks 73 CN8JV Is the radio aligned properly? It's easy to check but if it's out of alignment, it needs to go to a radio shop to be fixed since proper calibration tools are needed. To hear if it's aligned right: - In AM mode, tune to a time station, such as CHU or WWV. - Now listen to the station in both LSB and USB modes. Is the sound of the clock tick the same, or close? If so the rig is aligned properly. If they don't sound the same, the rig is out of alignment. Don't try it on CHU. They transmit a carrier and USB only. Dave |
Thanks, didn't know that...
"Clif Holland" wrote in message ... Minor problem with the alignment scenario. There is NO ALIGNMENT for the carrier oscillators. They come from a DDS chip controlled by the uPC. -- Clif Holland, KA5IPF AVVid Authorized Kenwood and Icom Service Center 816 W Shady Grove Rd Irving, TX 75060 www.avvid.com 1-800-214-5779 972-870-0630 (local) "Dave Holford" wrote in message ... "Bob M." wrote: "chafik CN8JV" wrote in message m... hello my friends I am using icom 706 MKII on LSB, I get bad reports about audio and modulation quality, and the output power is too low. but on USB the output power is normal with good audio quality and modulation! any idea please thanks 73 CN8JV Is the radio aligned properly? It's easy to check but if it's out of alignment, it needs to go to a radio shop to be fixed since proper calibration tools are needed. To hear if it's aligned right: - In AM mode, tune to a time station, such as CHU or WWV. - Now listen to the station in both LSB and USB modes. Is the sound of the clock tick the same, or close? If so the rig is aligned properly. If they don't sound the same, the rig is out of alignment. Don't try it on CHU. They transmit a carrier and USB only. Dave |
Thanks, didn't know that...
"Clif Holland" wrote in message ... Minor problem with the alignment scenario. There is NO ALIGNMENT for the carrier oscillators. They come from a DDS chip controlled by the uPC. -- Clif Holland, KA5IPF AVVid Authorized Kenwood and Icom Service Center 816 W Shady Grove Rd Irving, TX 75060 www.avvid.com 1-800-214-5779 972-870-0630 (local) "Dave Holford" wrote in message ... "Bob M." wrote: "chafik CN8JV" wrote in message m... hello my friends I am using icom 706 MKII on LSB, I get bad reports about audio and modulation quality, and the output power is too low. but on USB the output power is normal with good audio quality and modulation! any idea please thanks 73 CN8JV Is the radio aligned properly? It's easy to check but if it's out of alignment, it needs to go to a radio shop to be fixed since proper calibration tools are needed. To hear if it's aligned right: - In AM mode, tune to a time station, such as CHU or WWV. - Now listen to the station in both LSB and USB modes. Is the sound of the clock tick the same, or close? If so the rig is aligned properly. If they don't sound the same, the rig is out of alignment. Don't try it on CHU. They transmit a carrier and USB only. Dave |
There is NO ALIGNMENT for the
carrier oscillators. They come from a DDS chip controlled by the uPC. Cliff- I've lately had a problem with my old IC-706, after a hot day in the car. With the IF shift set to the mid-range detent, there is a very noticeable difference in the sound of received noise when switching between upper and lower sideband. Could that be due to a bad SSB filter? Could that be the same problem Chafik is having? 73, Fred, K4DII |
There is NO ALIGNMENT for the
carrier oscillators. They come from a DDS chip controlled by the uPC. Cliff- I've lately had a problem with my old IC-706, after a hot day in the car. With the IF shift set to the mid-range detent, there is a very noticeable difference in the sound of received noise when switching between upper and lower sideband. Could that be due to a bad SSB filter? Could that be the same problem Chafik is having? 73, Fred, K4DII |
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