[Amps] lots of 813's and 872a's

[LU4HMF]

i dont know , these is the first time i have one in hand , all these tubes are marked a's not a single b in my stock 
  ----- Original Message ----- 
  From: RAY FRIESS 
  To: amps at contesting.com ; LU4HMF 
  Sent: Saturday, December 30, 2006 3:04 PM
  Subject: Re: [Amps] lots of 813's and 872a's


  The a's cant be used in place of the b's?

    ----- Original Message ----- 
    From: LU4HMF 
    To: amps at contesting.com 
    Sent: Saturday, December 30, 2006 11:02 AM
    Subject: [Amps] lots of 813's and 872a's


    Hello everybody ,
                                  recently i received a huge amount of radio 
    materials , including these tubes , i have a couple circuits where i can put 
    the 813's to use , but dont know what to do with the 872a's
    any amp circuits using 813 are wellcome , and any ideas on the 872a's will 
    be wellcome too , any help would be really apreciated
    maybe a desk lamp ?
    i have as many as 20 813's and about 40 872's
    maybe 40 desk lamps is too much i have not so many desks



    73 and happy new year
    de LU4HMF
    ff78vo cordoba
    Cordoba
    Argentina 

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