But if You suspect that some static is damagin your rb (I do not think it is the case)
What then do YOU think it is, juangelb, any idea? There is no known “voodoo” in electronics.
why not to try to use a lighting arrestot like those used in Wireless systems ?
Like this one :http://www.snappernet.co.nz/Packages/FernShopUni/FernShopUni/Pub.Shop.Product/PI
D/10BEE54F/LINK/Pub.Shop.Product_BTN_DETAILS10BEE54F/TYPE/details/ROOT/SNAPPER
"Lightning Protection" may not be mistaken with "Static Protection" juangelb. The “lightning arrestor” your link is pointing at, has (what is called ) a "breakdown voltage" of 90 ! Volts DC, (there are others available with other “breakdown- / threshhold- levels”) and only in case this "threshold” is overriden. it "fires", thus shortening (for instance) a receivers input to ground / earth (assuming of course “ground” has been provided to the "arrestors” terminal respectively) to prevent “ligtning energy” from destroying the (receivers) input circuitry.
ESD (Electro Static discharges) well below this "threshold" might even be harmful, though
not always “instantaniously”, but due to known “long term effects”, that degrade a receivers performance (sensitivity) "over time". (*)
DC Blocks, as well not a measure against the subject to talk about, and (among many other threads in this forum) discussed here:
http://www.airnavsystems.com/forum/index.php?topic=2746.0 in Reply # 29.
The antenna mentioned by Cumulus (Excellent suggestion!) above is the only one I know to have a “DC grounding design”. It must be grounded / connected to earth of course to comply with its design, and an almost cost intensive (“protecting only”) preamp with its accociated components may then not even be required.
All of the above discussed “in a lenght”, (as AirNavs uses to say) and pointing at professional sources covering the subject, stating that SAW filters in a receivers input are suspective to ESD (Electrostatic discharge) as are other solid state devices in other applications, and carefull protecting measures must be applied to prevent harm to them.
AirNav said they have done so for the latest batches of RBs and will “modify” earlier receivers if their input SAW device have suffered from ESD strokes:
http://www.airnavsystems.com/forum/index.php?topic=2675.msg23352#msg23352Reply #3
Regards
Karl
(* edited 29.07.09 / 17:45)
Filter manufacturers will typically specify DC voltages between 0 and about 20 Volt DC ! allowed to be applied to their SAW devices as a maximum.
K.