Jojo,
This issue of RF input in the Rossi-style reactor can be no more than an educated guess, since too little information is out there. It would be interesting to hear other informed opinions on this detail, but here is a start. Rossi apparently still uses so-called "RF" now, but he did not do so at first; and DGT does not use it at all - so "RF" (which is merely a place-mark for some kind of non-resistive input) - is not necessary to get the gain, BUT may be advantageous. Few doubt that Rossi has used it ever since it first was introduced and it may be more efficient than heat from a resistance heater for a number of reasons. The first time the device was seen and demonstrated in Bologna, the unit was labeled with a tag in English as a "Tesla Coil power supply", and was the identical size to neon ballast, indicating that it is simply a high voltage transformer. When used as a gas discharge inside a pressurized reactor, the HV may provide what is arguably RF but which is more like "noise in the RF spectrum" and less like RF used for communication. This may have changed since then, as the power supply is now hidden in the main control box. There is a long history in LENR of glow discharge experiments providing anomalies, even without nano-anything. Even before Mizuno's success with glow discharge, it was used by the Correas who seem to have faded into oblivion. Anyway - that basic subject of glow discharge in a high pressure environment, would be a good place to start. You can see here that even Naudin was able to get thermal gain from the glow discharge alone: http://jlnlabs.online.fr/cfr/html/cfrdatas.htm . so it probably cannot hurt :-) This would be a different situation is a pressurized gas, since you need more voltage, and it is increasingly dangerous - so you are on your own. Jones From: Jojo Jaro Hey Vortex Gang, Once again, I am in need of the collective intelligence of this collective to solve a problem. My question pertains to the use of RF in Rossi or DGT systems. Is RF a required component for these LENR systems. The opinion appears to be varied. On one hand, there is Rossi and CHAN/PHEN who claim RF is required; both of whom I consider dubious sources as far as this topic is concerned. It seems only Rossi and Chan/Phen know for sure if RF is being used; and I am not sure both of these entities are being truthful. Some people like Piantelli and Focardi seems to use RF for initiation of the process only. Many are of this persuasion. If I recall correctly, DGT does not seem to use RF. So Vortex gang, what is the consensus? Is RF required? If it is required, how does one deliver such a signal into the reactants? I have been mulling over the second problem of delivery and I am speculating that a coil of magnet wire around the reactor might work. To that end, I am designing a coil onto my reactor. But I can't seem to find an off the shelf component to drive the RF signal itself with enough power. It seems to me that the best way to do this is to simply use a broad-spectrum RF signal since we do not know exactly what frequency will initiate the phenomenom. Delivering a signal that contains all frequencies might work since one of those signal is bound to be the signal frequency that's required. Essentially a noise generator for the entire frequency range. Is such a signal generator possible? Does anyone know how such a device can be built? Remember we are not overly concerned with the signal itself, just the frequency and the power. In fact, an irregular signal would probably work better because of the varied harmonics present.
