Radio's "radio trivia"

[Radio]

Next question.

I have a CB 1/4 wave vertical. It has 3 radials and is made to be tower mounted, not ground mounted. I want to tune it to the high end of 6 meter band. What are my measurements?

Yes you may use calculators. And you can research this one!

[Andy N1ORK]

This is for the previous quetion.

First of all, Junior Wannabe probably needs Elmering and shouldn't be taken advantage of. Secondly, those tubes are probably worth more than $2 each. According to prices I found on the net, you should be able to ask at least $4 each.

[Radio]

Originally Posted by Andy N1ORK

This is for the previous quetion.

First of all, Junior Wannabe probably needs Elmering and shouldn't be taken advantage of. Secondly, those tubes are probably worth more than $2 each. According to prices I found on the net, you should be able to ask at least $4 each.

That's the answer I was looking for. Make sure Junior knows these are NOT RF amps. For all I know the old rig needs 5U4 rectifiers.

As for as $1 each, when I sell stuff at a hamfest, it's to clean out my basement. Junior got a good deal on his tubes.

Now, how do I get on 6m SSB with this old Radio Shack CB vertical? Recently licensed Techs should be able to research this and figure it out.

And here's why I'm asking, the 6m station and the liberated CB antenna piled up on my back deck!

[Andy N1ORK]

It's been a long time, so I will give it a stab.
The easiest is to make a 6m ground plane. Start at 57" and trim for best swr at 50.150mhz.
Looks like there's enough metal there for a 3el yagi, but much more work.

[Radio]

What about the radials? Any guess on those?

[Andy N1ORK]

Originally Posted by Radio

What about the radials? Any guess on those?

I'd make them the same length as the whip, but you may need to trim them also. Not sure what the angles from horizontal are for the radials, but, from what I see in the photo, you should be ok. As a point of info, as you start to go up in frequency, horizontal/vertical polorization of the antenna becomes more important. 6m is about the top limit where both may work just as well.

[Radio]

Now that my 6m antenna questions are answered...

NEXT QUESTION:

The radio kit Junior Wannabe is assembling contains instructions on winding a "Tickler Coil" so the receiver section must have what type oscillator?

[Andy N1ORK]

Would it be a collpits? I thought a tickler coil is used to provide positive feedback for a regenerative reciever.

[Radio]

Nope. But Mr. Collpits knew Mr. ____________ .

But a tickler coil is used to provide positive feedback for a regenerative receiver.

The little coil inside the bigger coils is the tickler. You increase regeneration by changing the physical relationship of the coils, you rotate the tickler.