Hi Eric,
> "Eric" <ve2...@...> wrote: > Hello, > I have an 30w UHF MSR2000 that was previously on 414/419MHz. > With a new set of crystal for the ham band, I need 2.8µV at > 447MHz to open the receiver. Just for the trivia... I will say the 30 watt unit was probably made purposely for the Canadian Market, which is a typical value for all the Canadian MSR-2000 units I have seen. > Is there a way to improve this, or a way to modify > the preselector / injection. filters ? Real world, no! ... unless you are very, very determined and well equipped to do detailed machine work after a lot of time spent working up a game plan. The injection stages are a fairly straight forward mod process but the pre-selector is a real beast to try and change. > Maybe the easiest way is to find a receiver/exciter boards > for 450-470MHz on ebay but unfortunately most sellers won't > ship in Canada. You might get a US Ham to help you out... it's a pain to deal with Canadian Customs but some of us would probably help you out. A few of use might also consider a receiver board trade. You of course would probably use the same exciter module as they seem to be able to properly align well through-out the 400 MHz range. > > MSR2000 model: ACC44KSB1100AT > RECEIVER: VRE4001B/38 > > 73 Eric VE2TSO > Quebec If no other solutions present themselves... Email me direct and I'll try to help you. cheers, skipp skipp025 at yahoo.com
