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The choke is a lot more robust than you would think.? I've had a couple of them pop over the years but tracked that down to a resonance (AKA idiot builder error) each time.? Fix the resonance

This confirms your choke is the "fuse" in your amplifier. If you are ok with that Dave, then great. I have one in an AM plate modulated amplifier with a pair of 4-400s modulated by a pair of 304TLs.

“Ratings are guidelines” - yeah that what this guy at Essen Motor Show said this weekend (picture attached)? In my 3CX3000A7 amp I used a very similar choke (in fact it looks the same) bought

Yep, while the designer ran a full bore 2 hole AL-1500 with no problems the company went to a lower rating to minimize warranty issues. Note I also stressed the layout as many Hammy Hambone amp

The only issue that may occur is sourcing the valves for the Alpha. When last checked they were made of unobtanium rgdsJeff/9y4j? On Wed, Nov 27, 2019 at 9:24, Jim Strohm<jim.strohm@...>

The only issue with the Alpha 76, that may occur is the scarcity of valves rgdsJeff/9y4j On Wed, Nov 27, 2019 at 9:24, Jim Strohm<jim.strohm@...> wrote: Depends on what "cheaper" means.?

Ratings are guidelines. 73, Alek VK6APK

Nice amp. I see very few using the F version which is often a real bargain even NOS. Carl

The Ameritron choke will easily handle 2A from that tube on CW and SSB. It is also well placed for minimum coupling. Carl

David In terms of reliabilty there is nothing to choose Alpha didnt advertise their "brick on key" amps for a joke - they really can do it! Particulary if the 76 has 3 valves go for it! Spares are

That little Ameritron plate choke is screaming for its life :) Very cool amplifier! -- Please let me quote you for your parts needs! I offer a discount on Protunes with parts order! Clark

Depends on what "cheaper" means. Too many hams will cheap out at every possible opportunity, frequently to their detriment later. You can see today that the Alpha has a much greater retained value.

Hi guys. ?Ive just been subscribed to this group. ?Greetings one and all. Q: ?Alpha 76 or FL2100B amp...which to buy. ?I have seen one of each at reasonable prices. ?I see the 2100 has no top

Fantastic eye candy here Mike on a nicely executed 3CX3000 amp; Bravo! Thanks for sharing the pics. Leigh VK5KLT _____ From: [email protected]

My latest amplifier.

Should have added... I use his coil program for loading coils for 40m yagis... and also tank coils for hb amps. Since it spits out RF resistance for a given freq, and knowing the

K6STI has an upgraded FREE coil software version on his website below. Coil 3.72 is at the extreme bottom of left column. Note, by left clicking on the ....AWG, u can toggle

Once the group is migrated, all members here will automatically be members in the new group. I would suggest that all uploads and photos be stopped until after the migration, as there would be a good