[Amps] Hunter 2000c (short review)

[Tim Kass]

The Hunter 2000C will accept 3-500z tubes, however, the screen over the tubes will have to be removed or modified..I run mine without the screen on...easy to get to the tubes,  unlike the Heath SB=220 .. just lift the lid..but be careful..no safety latches, etc.

Tim

--- On Sun, 6/10/12, Gudguyham at aol.com <Gudguyham at aol.com> wrote:

From: Gudguyham at aol.com <Gudguyham at aol.com>
Subject: Re: [Amps] Hunter 2000c (short review)
To: k8wbl at yahoo.com, amps at contesting.com, k7fm at teleport.com
Date: Sunday, June 10, 2012, 7:32 AM



 
 

 
Hunter Bandit 200C short review.
 
1. Covers 80-10 meters
2. Uses (2) 3-400Z tubes
3. Directly grounded grids (not floating)
4. No operating bias added (3-400's operate zero bias to about 4KV) 
5. Straight forward Pi-Network
6. No tuned input
7. Full Wave doubler PS design
8. Only 6 filter caps (rated 475vdc)  Total HV 2700v
9. Has no provision to read grid current (ala Dentron)
10. Does have a watt meter reading
11. No ALC provision 
 
Although some features are missing on the amp Like an ALC and no tuned 
input, the transmitters of those days would have worked just fine with this 
amp.  A solid state radio of today might have a problem with the no tuned 
input.  The no ALC is not a big deal unless over 100 watts was available to 
drive this amp.
 
A grid current meter would have been nice but don't know the reasoning for 
not adding one here.  Funny thing, the multimeter has an "off" position 
which is unusual.  Don't ya think?
 
This is based only on seeing the schematic of this amp, I have not really 
looked inside of one of these so I cannot comment on the parts used or the 
workmanship, although I suppose you could have bought this in kit form or maybe 
already put together at the factory.  These amps are pretty rare, you do 
not see them too often for sale.  As far as circuitry goes, I do not see 
much of a Collins influence there.  Floating grids would have been there 
for sure if the Collins circuit influence was there.  The color scheme does 
look similar however.  I'm not sure, but some of these amps that used 3-400 
tubes were built with very little extra room in the tube compartment.  When 
the 3-400 went out of production and the 3-500 took over, some of these amps 
that used 3-400 tubes, would not accept a 3-500 tube inside the tube 
compartment.  The Swan Mark I and the Henry (forgot the model) will not 
accept a 3-500 tube.  Even the later addition 3-400's with the tube pin 
support may not fit!!!!  Bummer....
 
 

In a message dated 6/9/2012 9:42:45 P.M. Eastern Daylight Time, 
k8wbl at yahoo.com writes:
Thanks 
  Colin..

73, Tim K8WBL



--- On Sat, 6/9/12, k7fm 
  <k7fm at teleport.com> wrote:

From: k7fm 
  <k7fm at teleport.com>
Subject: Re: [Amps] Hunter 2000c
To: 
  amps at contesting.com
Date: Saturday, June 9, 2012, 8:12 PM

Ted Hunter 
  helped develop the Collins PTO prior to WWII.  He also wrote at 
least 
  one article on the pto design in QST.  In addition to the amplifiers 
  
his company sold, they also produced the Cyclemaster 20A, which was a 
  
transmitter using the pto, which was sold in 1948 and 1949.  It had a 
  unique 
zero button, which is a red "marble" in the center of the pto 
  tuning dial. 
Push it to zero beat.  I am fortunate to own 
  one.

73,  Colin  K7FM 
  

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