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eHam Forums / Station Building / Grounding
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on: October 13, 2005, 11:27:27 AM
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You might want to try another brand. Second Chance is being sued by several federal agencies including the DoJ and the Secret Service as well as a couple of dozen police departments for knowingly selling vests with defective bullet-resistant material. They WILL stop a sharp stick, though. <g> Seriously, no one was shooting at you; grounding questions are the number one question on eHam and 15 minutes of looking around and reading will answer virtually every question you have. No real need to reinvent the wheel, so to speak, when there are wheels laying around for the asking.  |
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47
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eHam Forums / Mods And Repairs / My TM-261(a search for sanity)
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on: October 12, 2005, 08:27:04 PM
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What you should do is buy a commercial radio that covers the frequency of your department.
It is illegal to use modified amateur gear to transmit on commercial frequencies, including marine, law enforcement, fire and public safety.
If your department allows this, it is subject to very large, daily fines from the FCC as well as possible loss of the department's license.
73,
Lon - N3ZKP
Baltimore, Maryland
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48
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eHam Forums / Station Building / Grounding
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on: October 11, 2005, 02:52:18 PM
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With all due respect ...
There are well over a hundred threads on this subject already on eHam. Do a search in this forum and the Elmers forum and you'll have all the answers you need on the subject of shack grounding.
And no, you don't have to insulate the ground wire where it goes through the wall.
73,
Lon - N3ZKP
Baltimore, Maryland
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50
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eHam Forums / Mods And Repairs / ALINCO DX-70 LOW output
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on: October 08, 2005, 07:44:31 AM
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Then I would think you do have a problem with the finals, or maybe the driver circuit.
It's time to put it on someone's repair bench.
Sorry not to be of more help,
73,
Lon - N3ZKP
Baltimore, Maryland
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51
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eHam Forums / Mods And Repairs / ALINCO DX-70 LOW output
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on: October 07, 2005, 07:27:18 AM
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What mode are you using to measure output? You need to use CW or FM, not SSB and not AM.
Are you using a real peak-reading wattmeter? Are you measuring into a 50 ohm dummy load or into an antenna?
Have you made sure the hi/low switch on the chassis (NOT the button on the face) is in the hi position? This is detailed in the manual.
If this switch is in the low position and the front panel button is in the low position also, the readings you have are not far out of line.
Incidentally, I run one of these mobile and another as my portable rig.
Lon
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52
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eHam Forums / VHF / UHF / 6m/2m VERTICAL
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on: October 05, 2005, 07:34:17 AM
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Mark:
<< The Larsen 2M 5/8 wave antenna works like a loaded quarter wave on 6M. >>
Interesting. I'll have to try that on mine.
Lon
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53
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eHam Forums / VHF / UHF / 6m/2m VERTICAL
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on: October 04, 2005, 11:11:10 AM
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There are some 6m/2m/440 antennas. I am unaware of any 6m/2m combos.
From what I have read, 6m performance on the tri-band antennas leaves a lot to be desired. A 6m Ringo Ranger will out perform any of the combo antenna.
Lon
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54
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eHam Forums / VHF / UHF / Best Talkie for HF Listening
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on: October 04, 2005, 10:59:42 AM
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<<Has anyone had experience with all of these models and could give me any thoughts on which might have the best HF receive capabilities? >>
In my opinion, none of them. HF reception with the typical HT antenna is an exercise in futility and frustration. Attach a resonant HF antenna and the front end will overload on just about anything.
If you want to listed to HF, get a radio designed to listen to HF. Even the $99 shortwave portables will run rings around an HF-capable HT.
Lon
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56
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eHam Forums / Station Building / Best fertilizer for an antenna farm.
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on: September 18, 2005, 01:12:37 PM
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I don't have an antenna farm, but I do have a rather nice garden. It's 120' x 220' and is composed of excellent conductivity "soil" material - corrugated steel. This is the roof of a two-story office building in the Inner Harbor section of downtown Baltimore. I have a Butternut HF-6V, a 6m Ringo, a Comet dual band and a few other items of occasional use, all pretty much in the middle of the roof. 73, Lon - N3ZKP Baltimore, Maryland |
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57
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eHam Forums / Antennas and Towers and more / Butternut vertical
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on: September 17, 2005, 07:23:45 AM
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The counterpoise kit is a ring of wires around the base of the antenna. It is (1) vastly overpriced, (2) vastly inferior to a real radial field, (3) better than nothing.
If that's the only option you have and you are committed to a vertical, then you have to decide if it's worth the money.
Just how much room do you have? 30, 25-30 foot ground mounted radials will run rings around the counterpoise and will cost just a few dollars and some time.
Lon
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58
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eHam Forums / RFI / EMI / Touch Lamp problem
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on: September 10, 2005, 08:07:59 AM
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Lots of toroids on the line cord.
Better solution is to throw the touch lamp in the trash and use one with a real switch.
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59
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eHam Forums / RFI / EMI / Insulation
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on: September 08, 2005, 07:36:23 AM
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<< He has fiberglass insulation in the walls and ceiling, then that foil bubble wrap stuff fastened over it.
Am I crazy for thinking it might make a decent out of the way ham shack?
>>
You want to make the wall and ceiling your antenna and then sit INSIDE it while you are on the air?
Even if it would work, which I doubt it will, it's a REALLY dumb idea. Try calculating your RF exposure.
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