开云体育

Ubitx variable RF out?

Mike All Messages By This Member #45397 Group: ? Is there an easy way to make the RF output variable on a Ubitx? I now have a LDMOS amp that can only take 3 watts max for 1 KW out. Thank you! Mike WA3O
Jerry Gaffke All Messages By This Member #45399 Easiest is to adjust RV1, turning clockwise decreases drive. If SSB (not CW), could reduce mike gain somehow at Q6. Could add an attenuator between the uBitx and your big amp. This might be the best solution as it can make the amp more stable to be driven from a well behaved 50 ohm source. ? I'd suggest you make sure your uBitx is clean first. Spurious outputs that at 10W are barely noticeable will be? pink ticket bait at 1000W. Jerry toggle quoted message Show quoted text On Tue, Mar 27, 2018 at 01:28 pm, Mike wrote: ? Is there an easy way to make the RF output variable on a Ubitx? I now have a LDMOS amp that can only take 3 watts max for 1 KW out.
Mike All Messages By This Member #45400 Jerry , ?Thanks for the response. Can I remove RV1 and just move it to the front panel? Thanks! Mike WA3O?
Jerry Gaffke All Messages By This Member #45402 Maybe. I would definitely use coax I were to try moving RV1 to the front panel.? toggle quoted message Show quoted text On Tue, Mar 27, 2018 at 01:59 pm, Mike wrote: Thanks for the response. Can I remove RV1 and just move it to the front panel?
K9HZ All Messages By This Member #45404 开云体育 See: Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: email:??bill@... ? toggle quoted message Show quoted text On Mar 27, 2018, at 3:28 PM, Mike via Groups.Io <mikeymustang2000@...> wrote: Group: ? Is there an easy way to make the RF output variable on a Ubitx? I now have a LDMOS amp that can only take 3 watts max for 1 KW out. Thank you! Mike WA3O

Previous Topic Next Topic