For sale are EBF80 (6N8 in USA) double diode pentode IF amplifier / detector / AGC valves / vacuum tubes by Mullard, new in original box, fully tested and working. The EBF80 was a very successful design used as the IF amplifier and detector / AGC rectifier stage of many radio receivers from the early 1950s onwards. A common valve / tube to find laying around still to this day, but not many brand new examples still available!

These particular examples are in pristine clean condition with all original markings and still in their original Mullard boxes.

The EBF80 is pin compatible with the later EBF89 but some circuit re-design would be necessary as the EBF89 employed a higher screen voltage and current and produced a higher gm and gain.

Of particular interest to radio set restorers, collectors and experimenters alike.

I am not selling these for 99p each as selecting and testing good ones does take time, equipment and experience. But why take a chance on a 99p untested valve when you can get a guaranteed good one (or your money back) from Helmore & Hunt?

EBF80 / 6N8

Heater = 6.3V @ 0.3A

Pentode:
Anode / Plate:  250V / 5mA / 1.4Mohm
Screen Grid: 85V / 1.75mA
Signal Grid: -2.0V
gm: 2.2ma/V

I offer a full, money back guarantee if you are not completely satisfied with this purchase (see terms). We have been trading since 1927 so buy with confidence. Most of our valves / tubes have been in our own stock room for many, many years. See our EXCELLENT FEEDBACK on quality valves / tubes previously supplied!

We have thousands of valves / tubes in stock - standard and rare; US, UK and European. If you have any particular requirements, please send a message and if we have what you want, we will list it here.

We ship worldwide and are very happy to combine items for multiple postage.

TERMS

GUARANTEE: In case of dissatisfaction, buyer must return item at own expense. We will only refund if you return the EXACT SAME VALVE / TUBE to us that you have purchased, with the heater still intact and passing continuity test. Believe it or not, some evil people have tried to send us back their dud tubes to try and get a full refund for a perfectly good tube we have just sold them! So, refund is a genuine offer, but at our discretion that we have been sent back what we actually sold you in the first place and that you haven't destroyed it through misuse! All returns under guarantee are limited to within 21 days of shipping.

PAYMENT: We accept Paypal, cheques in GBP, UK postal orders / bank drafts or wire transfers. Please CONTACT US FIRST before sending payment by a method other than PayPal - there will be a delay in shipping while we clear your payment if you pay using these other methods. We are happy for you to collect from Bristol, but will require payment in GBP cash on collection.