That's right Peter; horses for courses / no free lunches concisely sums up the tube comparison quite well. The choice is largely a personal preference one with diehard aficionados in both camps. If h
Leigh, Not to drive everyone up a tree with this topic, but do you know of any non-proprietary designs that might serve at least as a basis for a properly-done EBS implementation? I'm not thinking so
I don't know what is or is not proprietary, but you can build anything you want including copying a commercial design as long as it's for your own amp. Proprietary doesn't mean anything when it comes
Not to drive everyone up a tree with this topic, but do you know of any non-proprietary designs that might serve at least as a basis for a properly-done EBS implementation? I'm not thinking so much o
Jim, SSB VOX for N7CXI is a definite no-go. ;-) I'll probably eke an EBS circuit out myself just for fun, but I like to study what other people have done first. Call it plagiarism or whatever, but ev
That's my style, plagiarize and modify, saves loads of time. [P&M Engineering] -- 73 Ron KA4INM - All E-mail sent to this address shall linger in the Google cloud forever! ___________________________
Why should one care about an amplifier without EBS or high idle current at all? That current is only drawn if actually transmitting and not in standby mode without output power. 73 Peter, DJ7WW Not t
I donīt think that there is enough heat wasted between words that it worth to do something about it, in my opinion it is never a lot of additional wasted power between words on normal talk. On pauses
The maker of the TH628 tetrode in France tests them without bias switching. With 5 Amps of idling Ib, at 28 kV, there's 140 kW kW of plate dissipation just from the electron beam with no RF drive. In
While we are on the subject of EBS, let me add one item. I put an Ameritron EBS-1 Bias Switcher into my AL-1500, and it worked great. On rare occasions, with two loud blowers operating, the EBS would
Many use a foot switch Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
When operating DR1A I do as well, but release it on pauses. 73 Peter Many use a foot switch Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://list
Good point Peter. That higher ZSAC is completely subsumed and absorbed into the total plate current when the amp is producing RF output. An EBS controlled amp provides its best efficacy in standard P
Good point Peter. That higher ZSAC is completely subsumed and absorbed into the total plate current when the amp is producing RF output. An EBS controlled amp provides its best efficacy in standard P