At 5% accuracy the Bird 43 aint all that accurate, but has been the industry standard. But for 2-way work which is long way from high tech it is good enough.
The QST mod article is good and does allow for some calibration since adjustable. They simple put pots in line and adjust for whatever power level one wants. Bird does same with fixed resistors, but wants you to buy slugs. 73, ron, n9ee/r >From: Doug Bade <[EMAIL PROTECTED]> >Date: 2007/08/13 Mon PM 12:49:00 CDT >To: [email protected] >Subject: Re: [Repeater-Builder] Bird Wattmeter X2/X5 Range Switch > >I have a Bird 4410A which has a range selector switch ( rotary) but >have never seen a modified 43... maybe an amateur mod??? Calibration >certification would seem to go out the window... > >Doug >KD8B > >At 01:17 PM 8/13/2007, you wrote: > >>There's a modification to the good old Bird 43 >>wattmeter that adds an X2/X5 switch. I suspect this >>just shunts the meter movement with pots. One person >>was selling such a meter on eBay and claims the mod >>was seen in a magazine. >> >>Anyone seen this mod, or know where it was printed? >> >>Thanks. >> >>Bob M. > > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
