[Boatanchors] Available Tube VLF Rcvrs

[Gary Pewitt]

Palomar makes a nice converter.  It sells new for 
$99.95 plus shipping.   I got mine second hand 
for about $35.00      www.palomar-engineers.com/VLF/vlf.html
73  Gary  N9ZSV


At 02:18 PM 7/9/2009, rbethman wrote:
>Group,
>
>I realize that it is NOT a tube based critter, however - a Frequency
>Selective Voltmeter such as an HP-312A or one of the other brands that
>are available, will most likely do as well or far better than trying to
>put a converter in front of the newer SS radios.
>
>I even managed to pick up my HP-312A for a premium price of $0.00.
>Unless you want to add the fuel cost to drive there.
>
>It is meant to be there, it has a nixie tube frequency readout, and you
>can determine the signal level in a calibrated manner.
>
>That fact means more to me than some may consider, as it allows me to
>determine how "good" the antenna system is besides VSWR readings and
>Smith Charts.
>
>Bob - N0DGN
>
>Bill Stewart wrote:
> > Roger, if you can find the converter info I 
> would like to see it. I have a TS-440s and it 
> goes down pretty low, but you are right about 
> the poor performance down in that region...tnx, Bill K4JYS
> > ----- Original Message -----
> > From: "Rodger" <wq9e at dtnspeed.net>
> > To: "Bill Stewart" <cwopr at embarqmail.com>
> > Cc: boatanchors at mailman.qth.net
> > Sent: Wednesday, July 8, 2009 6:52:49 PM GMT -05:00 US/Canada Eastern
> > Subject: Re: [Boatanchors] Available Tube VLF Rcvrs
> >
> > Bill,
> >
> > Probably the most practical is a low frequency converter in front of any
> > set you already own.  I have a construction article for a simple one
> > somewhere that I can find and email you.
> >
> > Most modern synthesized radios tune down to "near DC" but the
> > performance is very poor down there.
> >
> > I have an RAK-7 I use which tunes from 15 to 600 Khz. in multiple
> > bands.  These receivers definitely are not practical to ship and they
> > are early WWII regenerative sets but work extremely well at VLF in case
> > you find one nearby.
> >
> > 73, Rodger WQ9E
> >
> > Bill Stewart wrote:
> >
> >> Can anyone recommend a  tube type VLF rcvr 
> which is still available at a reasonable cost. 
> I'm not real sure what a practical low limit 
> would be, but low enough for most beacons and 
> up to 500kc plus. Would the SAQ 17.2kc freq be 
> considered 'practical'.  Also, I expect the 
> weight should be a consideration if shipping is 
> involved. Tnx for your opinions.
> >> 73 de Bill K4JYS
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>--
>+------------------------------------------------------------------+
>|             AM Amateur Radio Operator    NØDGN                   |
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>| Bob Bethman                \\\|///     " The absence of a danger |
>|                           \\ ~ ~ //      signal does *NOT* mean  |
>| rbethman at comcast.net      (/ @ @ /)      that everything is OK " |
>+-------------------------oOOo-(_)-oOOo----------------------------+
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Gary Pewitt  N9ZSV   garypewitt at centurytel.net  479 675 4376
1500 French Prairie Rd. Booneville, Arkansas  72927
Sturgeon's Law "Ninety percent of everything is crap."
Pewitt's Law: But it's that other 10% that makes life worth living."