Hi all,
I ran into the following info from another source (yahoo ham_amplifiers). It looks like the Chinese 572B manufacturing may have already ended. That leaves the Svetlana version. see info below. 73, Jim JKO pentalab wrote: > Gents.. this from AMPS. It appears that Chinese 572-B's are no > longer going to be made... and that the Svetlana 572-B is a dud for > RF.. I read somewhere that the Svetlanan version is for audio use > only.. and the anode is smaller inside the glass envelope... and > also doesn't hi-pot test as high. > > Jim > > > Yep, dead right. I buy them in direct from China for resale in > Australia and can attest to their excellent quality. > > There is one downside however. The Shuguang factory which makes the > tubes has decided to DISCONTINUE the 572B. Stocks have all but dried > up and there won't be any more. As I write this, the last 22 tubes > that I could source in China, are on their way to me > > There is obviously no money in glass rf tubes. The upsurge in tube > hifi has seen to that. > > 73, Alek > VK6APK > > At 01:49 AM 23/11/2007, jeremy-ca wrote: >> All Chinese tubes are the same now. All RF Parts does is charge you >> more for the honor of having their name on them. >> >> Ive bought directly from Hong Kong as well as the Pentas, no >> problems in Clippertons or on 6M. >> >> Carl >> KM1H >> ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
