Thanks Gary, Working with it tonight...Home Depot run produced a volt-ohm meter per your suggestion. I'll run CW and investigate further. Was on the roof all afternoon with my antenna chasing down RF reported in my signals, glad to say I found the culprit and didn't fall off the roof.
73 Gayle Dotts KF%LVZ On Sat, Apr 8, 2017 at 7:53 PM, Gayle Dotts <gayle.do...@gmail.com> wrote: > Thanks will do. > > On Sat, Apr 8, 2017 at 7:27 PM, Gary Sitton via BVARC <bvarc@bvarc.org> > wrote: > >> You need to measure the voltage as I indicated with the rig in CW mode >> into an antenna or whatever you used before when you measured the power >> output. Now a cheap but accurate digital volt-ohm meter will cost as >> little as $10. A small investment in your hobby I think. >> >> Gary, K5AMH >> >> Sent with AquaMail for Android >> http://www.aqua-mail.com >> >> On April 8, 2017 5:27:52 PM Gayle Dotts via BVARC <bvarc@bvarc.org> >> wrote: >> >>> Hi Gary, >>> >>> I don't have anything to measure the actual load on the FT-920, >>> unfortunately no dummy load available either. Bought the radio used and >>> without a power chord. I ordered a Yaesu power chord thru MFJ and it came >>> with two inline fuses one on the positive side one on the negative side, >>> both rated at 20A and look good. Question If I might ask still is >>> MFJ-4225MV@25A ..... too under powered or acceptable barely but could >>> be better. Thank you for your input I appreciate it! >>> >>> 73 >>> Gayle Dotts >>> KF5LVZ >>> >>> On Sat, Apr 8, 2017 at 2:29 PM, Gary Sitton via BVARC <bvarc@bvarc.org> >>> wrote: >>> >>>> Gayle: >>>> >>>> Measure the actual under load (100 W. CW) voltage >>>> at the back of the FT-920. Faulty inline fuse holders >>>> or connectors, and wiring losses can cost you 1/2 v. or >>>> more. You need a full 13.5 to 13.8 VDC at the back. >>>> Since power to a R Ohm load is V*V/R, a relative power >>>> line voltage drop will result in ~twice a relative power >>>> loss for a fixed R. >>>> >>>> 73s, >>>> Gary Sitton, K5AMH >>>> gasit...@comcast.net >>>> >>>> On 4/8/2017 14:17, Gayle Dotts via BVARC wrote: >>>> >>>> Got a question on power supply for my Yaesu FT-920. >>>> >>>> The FT-920 manual says: 13.5V DC….Rx(w/signal) @2.5A, Tx (100W) >>>> @22.0A. My current power supply is a MFJ-4225MV 25A switching power. Is >>>> this MFJ will power the Yaesu but I don’t really see the 100W on output Tx, >>>> although the amp meter on the MFJ shows 6-12A while transmitting running >>>> low to high on the RF PWR knob on the FT-920. Do I need to increase the >>>> power supply?? Please advise. >>>> >>>> >>>> Thanl you, >>>> >>>> Gayle Dotts >>>> >>>> KF5LVZ >>>> >>>> >>>> _______________________________________________ >>>> BVARC mailing >>>> listBVARC@bvarc.orghttp://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >>>> Message delivered to gasit...@comcast.net >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> BVARC mailing list >>>> BVARC@bvarc.org >>>> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >>>> Message delivered to gayle.do...@gmail.com >>>> >>>> >>> _______________________________________________ >>> BVARC mailing list >>> BVARC@bvarc.org >>> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >>> Message delivered to gasit...@comcast.net >>> >>> >> _______________________________________________ >> BVARC mailing list >> BVARC@bvarc.org >> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >> Message delivered to gayle.do...@gmail.com >> >> >
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