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Discussion in 'Amplifiers' started by 9C1Driver, Dec 19, 2008.
I don't know if the Xformer was factory, but after talking to the guys @ RF Parts - they talked me into buying 2 new 4CX400A tubes & new chimneys as the 4CX350 is a bit smaller diameter tube but the same pinout. Basicly just a "chop & swap" & with as little as 10 watts drive it was doing around 2.8Kw on my 43P Bird!! Add a bit more drive (35 watts) & a dedicated 30 amp service & it was peaking @ 3.3Kw Bird!!! Not to bad for a 120vt amp!!
I sold it to a guy who needed a driver for a 55 built 10 Kw box & watched the Telstar Magnum doing 3.3Kw Bird on his meter as well so I know "it was do'in it's thang"!!
I've never found another Telstar Magnum for sale but would snatch 1 up in a second if I could!! BTW- Let me know if you want to sell it!! :drool:
Happy Holidays to all here on the WorldWideRadio Forum!!
the telestar is a 6 meter amp, and they have what some of know them to be
tetrode, tube= steele tube . with a chimmey and blower fan that pushs air
in a air tight chamber, them the air moves up though the fins on the top of the tube, if your useing it for a 11 meters the tank coil have to be redone.
meaning the coil has to be recoiled, to about 5 turns or 4 depending on the tube that your tuneing, abox builder will know more about it, ive seem them with 250 b's ive seen them with 8930=4cx350r's, and now ppl are useing the
russian tubes because thier cheaper then the american made, with is eimac,
or cpi.. most of the tubes used in those box's are low driving tubes, and it has
an input tuning which is important for tuning out SWR's most ppl dont really check swr between the driver and the box, but i can tell out out of 10 ducks
maybe 3 might know about it.. other then that its a very good and clean amp
tetrodes are clean anyway depends on the builder, if your not trying to dead key alot of watts which you should not, it should be tuned for max headroom,
not bully watts as i call it, if u want bully watts then get an amp with a larger tube, my rule of thumb is if u wanna key 10 kw, get a 4cx20,000 then
u can keep 10kw out their all day long with out stressing and killing the tube, if you want a lot of upward swing then you might want to get an 8877, depending on who builds that box that tube with key 1500, bird watts and swing to 4kw or 5 kw, depending on a few factors, service in the house, a well tuned out radio with a lot of upward swing, bird watts not those fake dosy watts. anyway enuff of talking about huge watts, well then again, thats how i run my station i dont play with these mudducks out on the air, i key that maull down and am getting heard, and talk as long as i want to with out
any interuptions from the in between mudducks, i will say this, being 10-8 cost a lot of money this game is not from the light pockets, trust me when i say this, if you hear guys in skip they have money tied into their stations so dont think cause u can hear them its gonna be easy to get back to them, you have to remember theirs more ppl talking and want to talk to the same loud station as you do, and their not going to stand by so u can get your name called.. u need to research this game well, get smart and spend wise.. and keep a knowlegeabe tech under your belt, most ppl want to be 10-8 rite out the box and thats not going to happen, ok i preached enuff 73'a
Being they made them in my town and I know 3 of the guys that made them, they are not just a 6 meter amp, they made commercial amps all the way up to large AM Radio Broadcast Amps, they just got a little greedy and made a few amps for consumer applications ...............2 CENTS on the 6 meter portion
The Telestar amplifier company was a commercial outfit that did comm, LIMITED mil contracts, etc.
They ALSO did HF amplifiers... When the "below 30 mhz ban" came into effect, they made 6 mtr amplifiers.
They DO kick ass, though, as others have professed.
I have a 2 tuber in the shop now..... Soon as the leg lets me walk again, I'll be in there to clean it up.
Telestar Magnum Amateur Linear Amplifier - eBay (item 370298597246 end time Dec-06-09 17:58:39 PST)