YL1080 / 8348 Double Tetrode VHF Power Valve / Tube by Mulla



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For sale a YL1080 / 8348 (quick heating QQV03-10 equivalent) double tetrode VHF transmitter power valve / vacuum tube by Mullard, new old stock and recently fully tested and working.

These were very popular devices for 1950s and 60s VHF transmitters, especially in mobile transmitters for aircraft or automobile use for this quick heating version (heating time < 0.5 seconds). With up to 12 watts output in Class C, the single QQV03-10 or YL1080 made a useful VHF low power mobile transmitter output stage. It was also used as a driver or frequency multiplier stage in much more powerful transmitters.

This special quick-heating version was achieved by converting the indirectly heated cathode of the QQV03-10 to a quick heating low voltage oxide coated filament with high current (2.05A @ 1.6V, either AC or DC - it doesn't matter for RF use).

This particular example is in pristine, new, clean condition with all original markings but no box. It is fully tested and working at nominal new emission.

A sensible price for this new, fully working, guaranteed example of a really nowadays quite rare transmitter valve/tube. If you have a vintage transmitter that still uses one of these, an ideal purchase for replacement purposes.

YL1080 / 8348

Filament = 1.6V @ 2.05A

Dual Tetrode:
Anode / Plate:  300V / 2 x 37.5mA
Screen Grid: 300V / 2.3mA
Signal Grid: -40V
Power out: 12W

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.


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.

For more information, click [view offer] to the right side.