amplifier triode valves / vacuum tubes by Mazda, new in original Mazda boxes and recently fully tested and working.
The PC88 is a UHF grounded grid UHF amplifier valve used originally in 1960s & 70s UHF TV tuner units.
These particular examples are in new, pristine condition with all original Mazda markings and are in their original Mazda boxes. They have recently been fully tested on my Mullard High Speed Valve Tester and show no faults and nominal new emission.
A realistic price for a rare chance to acquire brand new valves / tubes in guaranteed, working condition. Ideal for vintage TV set restorers and other equipment uses.
I have plenty more of these and I also have a selection of new Mullard PC88s, also new and in original boxes - see my other listings.
Normally, I wouldn't list such specialised vintage TV type valves, but some of my return customers have asked me to make a regular supply available, so here you are.
For other uses, the PC88 can be run from a standard 6.3 volt heater supply if each valve is placed in series with an 8R2 resistor of 1 watt rating.
See my 100% positive feedback for valves / tubes previously supplied.
PC88 / 4DL4
Heater = 3.8V @ 0.3A
Triode:
Anode / Plate: 160V / 12.5mA / 4.8K
Signal Grid: -1.25V
gm: 13.5ma/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 bid 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.