[Boatanchors] Receiver Antenna Input Question
Gary Schafer
garyschafer at comcast.net
Sun Mar 1 21:47:57 EST 2009
The ARC5 had it across a high impedance circuit.
73
Gary K4FMX
> -----Original Message-----
> From: boatanchors-bounces at mailman.qth.net [mailto:boatanchors-
> bounces at mailman.qth.net] On Behalf Of J Forster
> Sent: Sunday, March 01, 2009 9:42 PM
> To: Carl
> Cc: boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] Receiver Antenna Input Question
>
> BTW, you might want to look at some vintage designs, like an ARC-5 Rx. I
> think you need a resistor or two. Also, you want to use a recently made
> NE-2. The radioactive material in them decays and they get harder to
> start.
>
> -John
>
> =============
>
> Carl wrote:
>
> > By the time a NE2 fired at 90V the front end coils would be fried
> > especially on the lower bands. The Navy used a neon bulb to protect
> > front ends from TX antennas that were often only 50' away but it was
> > biased so it fired at a much lower voltage. It was also much more robust
> > than a NE2. [snip]
>
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