开云体育

What bands with only band pass and low pass?

Mike All Messages By This Member #22522 Group ,? I am making sockets for the band pass and low pass filters for the use of QRP LABS filter kit. can anybody tell me what bands will the Bitx40 be able to cover with changing ONLY the band pass, low pass and a DDS VFO? Thank you! Mike WA3O?
Marc Jones All Messages By This Member #22525 Hi Mike, So far I've got my BITX-40 to cover from 160 to 20 mtrs ... Above 20 mtrs and the performance of my BITX-40 drops right off, It does still work on 10 mtrs but the RX and TX are pretty poor, I've concentrated on getting mine to work decently from 80 through to 20 mtrs ...160 mtrs was a bonus .. Regards Marc 'Gw0wvl'.. toggle quoted message Show quoted text On Fri, 24 Feb 2017 at 12:20, Mike via Groups.Io <mikeymustang2000@...> wrote: Group ,? I am making sockets for the band pass and low pass filters for the use of QRP LABS filter kit. can anybody tell me what bands will the Bitx40 be able to cover with changing ONLY the band pass, low pass and a DDS VFO? Thank you! Mike WA3O?
Mike All Messages By This Member #22528 Marc, So all you changed was band pass and low pass filters (and of course VFO) to get 80- 20 meters? Thanks! Mike WA3O?
Marc Jones All Messages By This Member #22540 Yes, ?here's my BITX-40 ... It's still a work in progress, I've got 2 BITX-40 here, One is standard, And this is the other one, I've to make the filters for it , I've been using this one ?to try out different circuits , Such as AGC , Etc ... Regards? Marc 'Gw0wvl'... toggle quoted message Show quoted text On Fri, 24 Feb 2017 at 17:45, Mike via Groups.Io <mikeymustang2000@...> wrote: Marc, So all you changed was band pass and low pass filters (and of course VFO) to get 80- 20 meters? Thanks! Mike WA3O?

Previous Topic Next Topic