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eHam Forums / Remote HF Station Control / RE: DM780 diplay lissue
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on: August 13, 2012, 07:48:09 AM
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Hi Robert
I run remote using both the iPhone and iPad. Although I have not experienced this problem, maybe I can point you in a direction that will help.
If you can see the desired video output on your pc then it should also be Good on LogMeIn. Make sure all your display settings are good here first.
Second, make sure it all looks good remoting from another pc before you try the iPad.
Although you said the resolution was fine, you might want to play with different settings on the iPad. I use 1280x768 on both the pad and the phone. Make your pc resolution match this.
Check the network speed, mine is auto, but you may need something slower.
Hope some of that helps. Again, if the video is good remoting from another pc, then the issue is on the iPad side.
David, NK5G
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eHam Forums / CW / RE: Side tone frequency for QRQ?
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on: June 16, 2011, 10:34:35 AM
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The purpose of the dynamic tone frequency is so it can be adjusted for the operator's personal preference.
With the exception of modulated CW, you are not sending tones. The tones are generated in the radio for reception by the human ear.
Go with a tone that is comfortable for you.
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eHam Forums / Station Building / RE: Yaesu FT-950 & Ameritron AL-811H -- Hooking them up?
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on: June 03, 2011, 11:15:50 AM
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I also have an FT-950 and AL-811H.
Do a search on e-bay for FT-950 amplifier cables.
I found one two years ago that goes from the amplifier connection to the relay connection on the amp. Great cable, no problems at all.
CW-Man (also on ebay) has one that goes from the tuner connection on the radio to the amp. I have one of those as a spare and it works fine.
My only complaint about Yaesu are those stupid connectors. That's why I searched custom made cables on e-bay. Both are very well made and I think cost around $20.00.
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eHam Forums / Antennas and Towers and more / RE: Tuning a Vertical
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on: March 15, 2011, 04:29:48 PM
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The length of the radials on the ground is not critical ONLY if you have an adequate number of radials. Two radials is far from adequate. When there are only a few radials on the ground, they will appear mostly resonant and a little lossy. The ground lowers the resonant frequency of the radials a lot, so if you cut them to 1/4 wavelength based on some formula they will actually be resonant at a much lower frequency. That will lower the resonant frequency of the antenna, which is the effect you are measuring.
Trying to cut radials for a certain frequency when they are on, or in, the ground is a waste of time and probably won't be correct anyway. You would actually have to measure the resonant frequency of the radials, but this is also a waste of time. Gain will be very poor with only two radials on the ground. For a 6BTV make them all 40 to 60 ft in length, and put in 20 to 60 of them. After you do that your antenna should start acting normal again. You will have to go back and undo the tuning you did to make the antenna shorter. Performance should much better also.
Jerry, K4SAV
Jerry hit the nail on the head. Think of the radial filed as a "mirror" that the vertical radiating element sees. Current flows in the radial wires which keeps the ground losses down and helps the vertical radiate the RF into the air rather than roasting worms. In a ground mounted antenna the radials are not the "other half of the antenna", but are a critical part of the antenna system. So the radials will have an impact on the resonnant frequency. Get a good radial field down like Jerry indicated...then adjust the antenna for resonnance. |
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eHam Forums / Antenna Restrictions / RE: Cushcraft MA 5V 5 band vertical antenna
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on: January 31, 2011, 03:44:21 PM
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I have had an MA5V since 2002 and have been very happy with the antenna. Works well incomparison to my other antennas. It is small in diameter, so it is low profile. I have used it as high as 20 feet and low as 5 feet, both with good results. It uses the coax choke and the four rods to compensate for a regular radial field. I'd say for a compormised antennna it is engineered very well and it is durable. It does what it was designed to do. I hope they continue to improve and sell this antenna. I'd buy another one when this one is ready to retire.  |
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eHam Forums / Digital / RE: RTTY
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on: January 03, 2011, 05:23:03 PM
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Although you will occationally get a keyboard to keyboard QSO on RTTY, the majority of the traffic is during a contest. Frankly with the duty cycle of AFSK RTTY you are better off running short exchanges rather than a ragchew. If you are reading this before Jan 8, 2011 get on the ARRL RTTY Roundup. It is a great event to get into RTTY, but caution...it can be addictive.  |
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eHam Forums / Antenna Restrictions / RE: HUSTLER 5BTV INTSTALL
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on: December 27, 2010, 04:34:28 PM
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I have a similar situation with my 6btv. I have a 50x40 foot yard that I share with two small children. My 6btv is centered in the back of the yard. I have 40, 25 foot radials buried in a 180 degree arc. I have had this installation for about two years. I work all the major contests and I do not see any degrade in performance or that the antenna favors a particular direction. Go with what you have to work with and you'll be fine.  |
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