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Re: [Amps] Machlett 3-500z

To: "AMPS" <>, "Dennis Kippa" <>
Subject: Re: [Amps] Machlett 3-500z
From: "Terry Hart" <>
Date: Tue, 25 Jul 2017 00:04:35 +0100
List-post: <>
Thanks Dennis. That's exactly the type of feedback I was looking for.  Any 
further feedback on personal experiences would be very helpful.
Best, Terry G3VFO
  ----- Original Message ----- 
  From: Dennis Kippa 
  To: Terry Hart 
  Sent: Monday, July 24, 2017 5:36 PM
  Subject: Re: [Amps] Machlett 3-500z

  I purchased 2 3-500gz from Mississippi and have had them in service for 5 
months.  I drive the tubes with 90  watts from a Flex 3000 and I get 1500 out.  
It will do MORE.  I am happy with the purchase and the performance.

  On Sun, Jul 23, 2017 at 2:08 PM, Terry Hart <> wrote:

    I  see from their website that RF parts will supply 3-500s only to 
customers within the CONUS area. That leaves the rest of us having to look 
elsewhere, so it would be useful to hear of the experiences, good or bad, of 
those who have bought these Machlett tubes 'direct'.

    Terry, G3VFO

    ----- Original Message ----- From: "Roger (K8RI)" <>
    To: <>
    Sent: Friday, July 21, 2017 10:33 AM
    Subject: Re: [Amps] Machlett 3-500z

      Warren,  that price difference sounds about correct to me.  RFParts tests 
and I believe, guarantees their tubes which are likely the same brand which 
they most likely purchase enough to receive a quantity discount.

      Purchasing direct often saves money. Sometimes it can be substantial 
because you are assuming the risk while the US reseller has the cost of the 
time and paperwork invested in testing tubes they may, or may not be able to 
return. With some NOS tubes there is substantial risk from "infant mortality". 
You are often safer paying more for the new tubes than less for the older NOS 
versions where both are available.  Direct Vs through a US retailer?  You are 
playing the odds and taking on the risk yourself Research the viability of the 
tubes before making your decision.  Price differentials and risk can vary 

      73, Roger (K8RI)

      On 7/20/2017 Thursday 10:46 PM, Warren Volz wrote:

        Tonight while searching for 3-500z on eBay I discovered this listing:

        I know all 'new' tubes are made in China and the rfparts version seems 
to get the best reviews. Any idea what the deal is with these Machlett 'factory 
direct' models? They are $90 less than rfparts. Are they the rejects from 
elsewhere or the manufacturer trying to undercut the market?

        -Warren KD5YPH
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