A Mazda PEN231 pentode balloon valve with silver plate and filled crescent getter.  Tested good.  Test reults are:

Vf = 2v
Va = 120v / Vg2 = 120v
Vg = -2.5v
Ia nominal = 5mA
Ia Tested = 9.5mA  

The valve has been tested on the Neuberger RPM370/1.  Please read the condition section as this forms part of the description. Unpacked weight is 0.050 kg.

For UK Shipping.  Please note shipping in the UK where possible will be using Royal Mail.  However, due to the new size restrictions implemented by the Royal Mail which has resulted in very large increases in P&P costs for certain items, they will be shipped via courier using a drop centre which will increase the delivery time.  


For Overseas Shipping.  The item will be shipped Signed For for overseas. Packages weighing over 2kg will be sent via International Signed For Courier.

Combined postage is offered on all items and is based on the packed weight. 

Shipping costs for all returns are at the Buyers cost unless the item was misdescribed in the original listing or this was not covered in a subsequent question or revision to the listing. Overseas bidders are responsible for settling any Customs Duties or Fees on items they purchase.