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No tx on 20m only

Russ Filling All Messages By This Member #50191 Good morning all,? ? ? I have a fellow ham buddy on a long trip that has a newer 857D with an ATAS120 mounted in his van,? the setup worked well for several days, but one afternoon he told me his ATAS120 quit tuning on 20m.? All other bands verify 40m up to UHF. ( he runs the diplexer for 2 & 70cm.)? His specifics are he can hear stations on 20m but cannot tx or tune the ATAS120. Everything else works as it should.? He is in cold weather land as well. I suspect a cold solder joint somewhere in the band pass section, maybe even at the relay or the relay its self.? He doesn't have stored frequencies so initializing relay cleaning ( pwr + band up + band down ) did not resolve the problem. Any thoughts, comments, ideas welcomed at this point. Russ N3TIH toggle quoted message Show quoted text On Mon, Dec 3, 2018, 1:55 PM K4IDC@... [FT-857] <FT-857@... wrote: ? Call for Papers and Presentations for the second Super VHF Conference, April 26-28, 2019, in Sterling, VA, near Washington, DC. ? The the second Super VHF Conference is jointly sponsored by Packrats, NEWS Group, and SVHFS, and Hosted by the Grid Pirates Contest Group and Directive Systems and Engineering details at Presentations or papers are welcome on VHF, UHF, microwaves, and higher.? All aspects welcome, technical and non-technical - operating, contesting, homebrewing, roving, software, EME, surplus, antennas, test equipment, amplifiers, SDR, 47 GHz superregen, whatever.? Your winter project might be a good candidate - take some pictures. N2CEI and W1GHZ will be coordinating the proceedings book and CD. submissions and questions to: conferencepapers@...
Brad #50192 开云体育 Check his ground to the chassis of the vehicle. also check with a watt meter online to see if it the radio or not. On 12/4/2018 8:41 AM, Russ Filling redman276@... [FT-857] wrote: toggle quoted message Show quoted text ? Good morning all,? ? ? I have a fellow ham buddy on a long trip that has a newer 857D with an ATAS120 mounted in his van,? the setup worked well for several days, but one afternoon he told me his ATAS120 quit tuning on 20m.? All other bands verify 40m up to UHF. ( he runs the diplexer for 2 & 70cm.)? His specifics are he can hear stations on 20m but cannot tx or tune the ATAS120. Everything else works as it should.? He is in cold weather land as well. I suspect a cold solder joint somewhere in the band pass section, maybe even at the relay or the relay its self.? He doesn't have stored frequencies so initializing relay cleaning ( pwr + band up + band down ) did not resolve the problem. Any thoughts, comments, ideas welcomed at this point. Russ N3TIH
Russ Filling All Messages By This Member #50193 Brad, radio was also tested on manual tuned ATAS25 and showed no SWR or PO on 20m only, but does receive on all bands. I will? convey to him on seeking an external watt meter to verify PO. Thankyou? for your offering of advice sir. Russ N3TIH toggle quoted message Show quoted text On Thu, Dec 6, 2018, 7:58 AM Brad nk8j@... [FT-857] <FT-857@... wrote: ? Check his ground to the chassis of the vehicle. also check with a watt meter online to see if it the radio or not. On 12/4/2018 8:41 AM, Russ Filling redman276@... [FT-857] wrote: ? Good morning all,? ? ? I have a fellow ham buddy on a long trip that has a newer 857D with an ATAS120 mounted in his van,? the setup worked well for several days, but one afternoon he told me his ATAS120 quit tuning on 20m.? All other bands verify 40m up to UHF. ( he runs the diplexer for 2 & 70cm.)? His specifics are he can hear stations on 20m but cannot tx or tune the ATAS120. Everything else works as it should.? He is in cold weather land as well. I suspect a cold solder joint somewhere in the band pass section, maybe even at the relay or the relay its self.? He doesn't have stored frequencies so initializing relay cleaning ( pwr + band up + band down ) did not resolve the problem. Any thoughts, comments, ideas welcomed at this point. Russ N3TIH ____________________________________________________________
cltoby600 All Messages By This Member #50194 There were some posts years ago about a contact on the antenna being intermittent. I think you can call Yaesu in Ca. and they have free tech support. They will walk you through trouble shooting the problem. K3CLT Chuck Tobias On Thursday, December 6, 2018, 6:52:09 PM EST, Russ Filling redman276@... [FT-857] wrote: ? Brad, radio was also tested on manual tuned ATAS25 and showed no SWR or PO on 20m only, but does receive on all bands. I will? convey to him on seeking an external watt meter to verify PO. Thankyou? for your offering of advice sir. Russ N3TIH toggle quoted message Show quoted text On Thu, Dec 6, 2018, 7:58 AM Brad nk8j@... [FT-857] <FT-857@... wrote: ? Check his ground to the chassis of the vehicle. also check with a watt meter online to see if it the radio or not. On 12/4/2018 8:41 AM, Russ Filling redman276@... [FT-857] wrote: ? Good morning all,? ? ? I have a fellow ham buddy on a long trip that has a newer 857D with an ATAS120 mounted in his van,? the setup worked well for several days, but one afternoon he told me his ATAS120 quit tuning on 20m.? All other bands verify 40m up to UHF. ( he runs the diplexer for 2 & 70cm.)? His specifics are he can hear stations on 20m but cannot tx or tune the ATAS120. Everything else works as it should.? He is in cold weather land as well. I suspect a cold solder joint somewhere in the band pass section, maybe even at the relay or the relay its self.? He doesn't have stored frequencies so initializing relay cleaning ( pwr + band up + band down ) did not resolve the problem. Any thoughts, comments, ideas welcomed at this point. Russ N3TIH ____________________________________________________________

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