Due to datasheets that do not list the same conditions as Western made 572B tubes, we are uncertain if the Shuguang 572B has the same maximum ratings as USA made tubes.
Other Shuguang tubes Other Ham radio tubes
Additional Information and Downloads
Shuguang 572B Datasheet (PDF)
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Warranty Information and Return PolicyWarranty Period: 3 months
All our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)
If you receive a tube that does not perform to the manufacturer's specifications, please do the following:
- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.
Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.
We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.
These guidelines may be updated without notice.
Ratings & Reviews
by Tom -
I've let these burn in with no HV for about 4 or 5 hours, then tuned them up in my SB-200 at 600+ watts. They seem to perform just as well as the Cetron's that were in there before. The Cetron's were doing fine, but 572B's are getting harder to find these days, so I wanted a backup pair waiting in the wings. I'll probably use these and keep the Cetron's as spares, who knows what they'll be worth in 10 more years.
I did notice a slight reduction in power at 21 and 28Mhz compared to the Cetrons, but they may just need some more burn in time, and besides the difference was very small. They performed a little better than the Cetrons on the lower frequencies, however.
All in all I'm very pleased. One of the tubes arrived damaged internally, likely from shipping. This is surprising because the packaging was VERY good. Regardless, these guys shipped out a replacement ASAP, very pleased with the service and I'll be buying here again.