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 on: Today at 12:05:50 PM 
Started by KK4UUP - Last post by W1JKA
Off the wall question: my current home brew single 20m element hex beam is down and dirty after 5 years due to a winter ice storm so I'm considering replacing with a home brew Cobb web but am only interested in the 20m aspect, is a single band set up possible without the stacked connections and would wire lengths be same ect.? Thanks

 on: Today at 12:01:32 PM 
Started by KP3RF - Last post by KP3RF
Is not normal.
When you operate the brake switch to power the brake solenoid in the rotor, it withdraws the armature blocking bar to allow the motor to turn.
The hum you hear is 26 volts AC.
This voltage operates both the release solenoid and the motor. You normally operate the release before either direction switch.
There may be an issue in the control circuit or the cable feed to the rotor.
Do the volt and ohm meter checks to see if there is anything out od spec.
I have this rotor and it's quiet.
I also put the time delay option in that works very well.
The timer delays the brake solenoid from releasing  for a few seconds to allow the motor and antenna inertia to dissipate before locking up the rotor.

I know it is not normal.  I don't want this rotor to be burned up for some reason. I was told that by changing the big control box capacitor for a stronger HVAC capacitor will cure this problem. Is that info right? If anyone know the correct replacement I'll appreciate that info.

 on: Today at 12:01:09 PM 
Started by KK4UUP - Last post by G3TXQ
Are you getting confused with the comment about not to use a single ferrite core for the 1:4 balun?

Steve G3TXQ

 on: Today at 11:45:04 AM 
Started by AA6YQ - Last post by WO7R
After all Hams hate not being part of something that they think holds an advantage.

More likely by far is that they join the free parts of the network that are sure to spring up.  At the very least, spots will "leak" in various ways, or some will support the new network but still have a free option.  There will be paths that manage to get around the registration and still let all comers put in spots somehow.  Or, maybe just a straightforward alternate free and hassle free form of spoting.  How do I know?  Because that's what happens when this sort of thing is tried, especially with highly technical people.  We can't foresee all the reasons this will arise, but history says it will even if you ignore people like me that think it is ridiculous.

But, in the end, there is no ability to prevent the erection of alternate paths for this information.  The premise that this can be controlled is wholly mistaken.

We don't need Balkanization of spotting.  We just need. . . spots.  The rest is agonizing over nothing and the assertion of control that will not control.

 on: Today at 11:44:29 AM 
Started by KK4UUP - Last post by MW0BRO
Excellent thread, my Father has had an original Cobwebb up for several years now, works flawlessly with great sigs on rx & tx at only 20ft.

Learning a lot reading through all this.

One question though, I saw a comment about not using single core wire, even on the G3TXQ version, I thought that was exactly what he DOES recommend?

 on: Today at 11:43:29 AM 
Started by M5AEO - Last post by KT4NR
There are also government users on that band. They run some weird modes I was never able to figure out.

 on: Today at 11:42:48 AM 
Started by KG5HFO - Last post by K0JEG
Well, the main complaints about the IC-9100 were the ALC overshoot and the price. They've fixed both in the last year, dropping the price on the stock unit and a recall program to get the main board replaced.

Don't write off the 9100. I went from an FT-897d to an IC-9100, mostly because I enjoy working satellites. At first I had planned on a Kenwood TS-2000 but I came across a good deal on eBay. Since then I've also caught the VHF contesting bug, although I'm on a very limited budget so running barefoot (100W on 2 meters and 75 W on 70 cm), but still able to get contacts. Receiver is far better than the FT897 on all bands (as one would expect). If you plan on adding preamps you can power them via coax right from the radio, just push a button. Audio and CAT interfacing is just a standard USB cable. I haven't done the recall on mine yet, but I also don't have any plans for an amp either, so it's not as much of a problem. I've also added the Dstar module and have had some fun working digital too. If your plan is to use it primarily on HF and use the V/UHF bands for hitting the local repeater, it's way overkill. But if you want to play around on satellites or weak signals above 50 MHz, it might be just the ticket.

If you have the opportunity to try one out, you should. You might be pleasantly surprised.

 on: Today at 11:42:02 AM 
Started by WO2C - Last post by KM3F
I chose the Kenwood TS 2000 for just the reason of all the bands except, 222 it does not have for transmit.
There is a 23CM option for the TS2000 if needed. It's stock in the X model otherwise has to be installed by Kenwood service due to some alignment requirements.
The second receiver tunes 118 to 512 MHz  AM FM to cover Aircraft bands, local gov, business, weather etc.
Tough to beat this radio for all the capability it has.
My 222 station is nearly ready to add to all this at 170 watts SSB PEP and FM driven with the HT..
My KW HT the THF6 complements the VHF/UHF capabilities in just two radios and a little extra work to get 222.
Good luck.

 on: Today at 11:40:00 AM 
Started by KP3RF - Last post by KP3RF
In the minute 2:57 you barely hear the brake solenoid in this video.

I wish brake release work like this one:;_ylt=A2KLqIQ0PypXFE0A.ms0nIlQ;_ylu=X3oDMTByZ2N0cmxpBHNlYwNzcgRzbGsDdmlkBHZ0aWQDBGdwb3MDMg--?p=Noisy+Ham+4+Rotor&vid=c5e80b953002f5ee665b13a44159e7cd&

 on: Today at 11:27:39 AM 
Started by N7ZEI - Last post by M0LEP
Any other recommendation that similar like SKCC but not limited to straight key?
I've heard FISTS ( ) mentioned in this sort of context the past. However, unlike SKCC, it costs a few bucks to join.

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