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It's not really fair to compare the 2sa1012 to the other two transistors previously mentioned in this thread. The 2sa1012 is in a smaller package and only has 25 watts contiuous dissapation where's the other two have as much as 60 watts continuous dissaption. (provided there is adequate...

National Communications Fast Food Frequencies

I have seen evidence that some fast food restaurants have frequencies within a few Mhz of 11 meter frequencies assigned to them.

Completely bogus. Will not work. It is a hoax. The transmitt section of a cb will not function at those frequencies without heavy modifications and that would entail a complete redesign and component changes and replacements. And from another website from the author of the video you...

There's a bunch of them kinda people on that channel. Complete idiots.

I got no problem with your numbers.....looks to be in the ball park to me. The manual does say the effiecieny is 50% on 10meter. I guess running it on 240vac is not an option according to the schematic.

That is a special case where you can use the 1/4 tx line transformer to transform the 35 ohms to the 75 ohms. SQUARE ROOT ( 35 x75 ) = 50 ohms Easy Peasy.

I have had to install a 'dipole configured' antenna on some of the dump trucks that had too much fiberglass in the front just to get the antenna to tune good. It would be easy enough to fabricate if you don't want to buy the mount that is made for that purpose. Give it a try and decide for...

Never saw this thread before till just now. Homer..... you da man!! I love this kind of stuff!

I had one when I was a teenager. (16)(1968) Bought it, the 30 push-up pole, and the coax and put it all together and put it all up with guy wires all by myself. I only had the efhw sittn' at 15 feet above ground level to compare it to. Managed to convince myself that it was worth the money...

Absolutely would be ok for testing purposes. You might even be able to leave it in there if it proves to remedy the problem. Unless your automotive electrical system routinely exceeds 16 volts I don't expect it to cause a problem. Granted, it is on the border line but I would be willing to...

People that are opposed to these cameras are the kind of people that could be catagorized as 'evil'. If you want to disregard other peoples safety for your own self-indulgence of self-importance then you sir, are related to evil. (word placement corrected) The above is what I said, now I...

Looks risky to me. Buy something like that at someones word that you don't know and then you are stuck with something that cannot be useful till you get it repaired.

Make sure you get one that is PLL controlled.

Sorry Robb I am gonna have to disagree with you on this one. INT is for the internal 400 cps tone to modulate the generator carrier, 400 Hz OUT is to send the internal modulation audio tone to the EXT MOD terminals to be used for auxilliary purposes and the EXT is for to modulate the generator...

You might be right about the computer being the problem. Try feeding the tone from the sound card directly into the input of the sound card..... SINAD display should be great with only one vertical pip on the display. In other words, do not take the recovered audio from the radio and feed it...

I don't know what information you have available but what I am seeing on the schematic is the input circuit for 10 meter should already be present.

I think you can inject a tone into the generator; "EXT" is for external modulation. Put the tone from the output of the computer sound card into the EXT MOD Jacks on the generator and set the switch to "EXT" and then set the modulation percentage level with the "MOD LEVEL" control, and there...

That is a challenge I will accept. I seem to be talented with ability to say tongue twisters well. A box of biscuits, A box of mixed biscuits, And a biscuit mixer. A tutor who tooted the flute tried to tutor two tooter's to toot, said the two to the tutor; "Is it harder to toot than to...

But it's only 5 S-units. ( if meter is in accord with the 6 db per S-unit standard ) I could accept this as being reasonable in a situation such as this.