Ham Operator Forums

I just got this info from a friend of mine. They built this antenna and he said it does cover the entire 80 meter band under 2 to 1.  His signal is stronger then his old wire and he no longer needs the tuner.  I thought I would post this info up in case there are any other antenna experimenters out there.

C

I am thinking of trying a few different options for 40 and 80. 

I was thinking of trying out the 80 meter Double bazooka.  Mainly because it will cover a wide bandwidth. This antenna will be mounted from a fiberglass arm off the top of the 55 ft crank up tower and set up as an inverted V.

For 40,  I was thinking of making a standard dipole or another bazooka but then hanging this antenna off a side arm from the middle section of the crank up tower. 

Two dipoles, on the same tower.  One at the top and one at the top of the middle section. 

The distance apart would be 6ft when tower is cranked down for summer and 15 to 20 ft apart when the tower is up all the way. 

I have never ran two dipoles this close.  Will this work out ok since the two are on different bands.

Is there any real reason, I cant put both separate antennas on the top of the tower?   The 40 wires would run out and be tied off away from the 80 wires.  Kind of like a fan dipole but with two Bazookas and two coax lines.

Thanks for any thoughts on the subject!

C

I just ordered the Nooelec version.  To hard to pass up for $20 with antenna and remote.  Should be fun!

C

Thanks for posting all the information.  Reading and understanding prop prediction and values is one thing I really need to work on.  Everyone is on the air now talking about a huge sunspot today. 

Welcome aboard and thanks for posting.  We are really growing around. 285 members so far.  More every day. 

Hi Jim. Thanks for posting.

I have owned several SB220's and I use one everyday.  I never had a capacitor failure in any of them.  I would just turn the Amp on and key it up in the CW/Tune position with no drive. This will put a low current on the tubes. If you don't hear any noises, The amp is good to go.  You can leave it keyed up for a while to de-gas the tubes this way. 

The 3-500s are instant on so you don't need to warm I up after this. Just turn it on and key instantly.  In fact, This is how I operate mine while working DX. I pretune the band, tune and load for the band I want to use by a chart, Flip it on, Make the contact and flip it off.

C

That's one serious Vertical.  Cant wait to hear the signal!

C

The only a few issues I know of is they sound a little flat in factory form.  There is a ham that modifies your microphone and then they sound great.  My Friends used to run hot and he had to sign off to let the rig cool. There is a temp meter on the front panel so you can tell when its getting warm.  A fan of course, Cures this problem.

The other thing is that the band scope is not really usable. It uses the same receiver has the main receiver. So you cannot have the band scope on at the same time as you are receiving. The scope makes a very slow pass across the band. Then stops.  Its not like a 756 Pro icom where the band scope is on all the time if you wish.

I am thinking of putting one in my Truck. Just need to find a good price.
C