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empeabee

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Everything posted by empeabee

  1. Linear V switching.The stock reply is noisy power lines from switchers.This could cause jitter on the analog / digital conversion if care had not been taken to filter the analog supply. But I think it is a result of taking a stock vhf tx and adding the 2.4gig stuff - stepwise development, followed by If It Aint Broke, Dont Fix It thinking by the production people - like why stuff a 9,6v battery into a 3,3v system - cos its known to work and 9.6v packs and chargers are both mature technoligy - thus cheap.Go buy a 3.3v 1Amp linear regulator - £0.50 in ones,  Switchmode £12.00 or so - retail, All mfg plants must have thousands of 3.3v linears so they will be effectivly free, and known to be very reliable with very very low Dead On Arrival fugures - great for production. Time will see improvements, but only if the is a real need.Just Good Enough is the best production model.  Mike Edited By empeabee on 13/09/2010 01:43:37
  2. Ah but the Insurance Companies get rich by nit picking, never mind mole hill poking... My farthings worthMike 
  3. I tried a post, having logged in, but when I said send it said Login & lost the post,Is this normal operation?Mike  
  4. Speaking s an OLD telecoms tech with no Ghz knowledge.It was easy for a very stong signal on a totally different frequency to swamp the front end of a receiver making it deaf.This could fit your dead zone problem if a long haul high power microwave beam is passing though your site. I could be wrong, but it sort of fits the scenario.Mike..
  5. Hi TimboWould you be kind enough to let me have further details of :- Regulator Mod Lipo upgrade idiot light Lipo low alarm.T.I.A) Mike  
  6. When setup as per the manual  the model proved to be quite agile. Mike or Come back Sweenie Todd, All is forgiven.  
  7. They say Nothing Ventured Nothing Gained. as its free, I expect nowt
  8. Steve Hargreaves I Like the Engineers answer to the Astrologists chart  Ron Trust you
  9. Wow what a bag of Apples Oranges and Plums are being compared here! It seems to hinge on his stated misconception that Power == (is equivalent  to) Current. This is OK if you stick with the same Battery Voltage 'cos when power consumption increases so does Current & Current is what most people look at when testing. So :- I = Current (not power)(Amps) V = Voltage (Volts), R = Resitance (pure with no stray electromagnetic happenings)(Ohms) & P = Power (Watts) I does equal V divided by R P does equal V times I so if R is constant (as stated) then if V goes up I goes up and P goes up. If you replace Resistance with Impedance, then Ohms law works fine with AC calculations but you must keep a weather eye on the frequency of the AC. But still the I (current) from the battery is still a good measure of what is going on. Mike
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