AdmiralCochrane
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Posts posted by AdmiralCochrane
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On 7/10/2023 at 1:44 AM, DirtyCitizen said:
Yeah the politics in Maryland where I am now are pretty wild. ... And all the guns in Maryland are pretty well neutered. with mag bans and HBAR reqs for any build most of what I have save a few useful pieces are antiqes, the rest stay out there and in W.Va.
I agree MD gun laws are stupid, but not sure if your description or understanding of gun laws in MD is accurate. Since you travel out of state often, the mag restriction basically is nothing to you. You may bring them in from other states, you just cannot buy them in MD. The MD AR barrel profile restriction only applies to .223 & 5.56, other calibers can legally have any profile; if that much of a barrel profile difference neuters an AR for you, I'm not sure how you are able to carry a rifle that shoots 6.5 Grendel
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The article does have a lot of factual and practical information
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My use of nanoVNA has always given results of SWR less than 1.5:1
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9 hours ago, axorlov said:
The question was answered by the first 5 words. It's just that OffroaderX never learned to read.
I read your reply correctly on the first try
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It's ham lower case. Amateur radio has more facets than most people can begin to imagine. My advice is to study for both Tech and General, it's not that much of a workload to bump up to General.
#1 look for your local ham club, ask if you can go to a meeting and look at the club's equipment. Talk to members.
#2 purchase a SDR radio and start listening before you buy any equipment. -
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Deacdes ago I discovered by accident that my 11 meter equipment propagated best across my ground plane. Physical heights of the vehicle sections did not seem to affect the signal strength as much as placement relative to the ground plane. This was determined with a signal strength meter.
In layman's terms, propagation in all directions was optimized when the antenna was centered on the vehicles. Propagation straight foreward was best when centered on the rear of the vehicles. When placed on a rear corner, the strongest signal was observed foreward to the opposite corner.
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On 5/8/2023 at 10:11 AM, WRQG930 said:
** If you think you aren't being watched: you're correct. But everything you do is stored away on a server. Every government does this to every connected citizen on the planet.
Depends on what the defintion of is is.
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On 5/11/2023 at 5:48 PM, JoCoBrian said:
uno taco quatro frijole des...Mother Goose, this is the filthy beast....do you copy? I'm a sad ham that thinks whatever radio I spend my money on, is the best one I can have at that time. If CCR is in the budget but the Batt Phone ain't, well a licensee has to make a fiscal call. I realize others play radio differently than I do, at times, and it bothers me not in the least.
I always liked code like this famous open text telegraph message between generals in India during one of the colonial uprisings: "Peccavi in Deum", literally "I have committed and offense against God". The encrypted message was the siege of the city of Sindha was complete.
Watching Cal Ripken Sr give encoded hand sign messages to base runners was always fun. He mixed the real message with jibberish. Sometimes the play-by-play commentators would know a coach's signals, but pre-arrainged changes could throw everyone off. I recall one humorous comment about Cal Sr's signing "It's in there somewhere, but I have no idea what it is"
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There is no "if"; a taller antenna always helps. Antenna height means more than power output in almost all radio communication.
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antenna polarization synchronization, or lack thereof, can decrease range
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She is OK if you need it read to you. I look it up for myself.
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I didn't think it was legal to "piggyback" other than family members.
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On 4/8/2023 at 4:15 PM, WRWR489 said:
I use a 200 watt panel and 3 group 27 marine deep cycle batteries and after a week of cloudy days I am still at 13.7 volts. I have a 10k gen for the house, but the batteries are just for radio stuff.
I've been considering the same set up. What panel and charge controller are you using?
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I think amateur mode puts it in ham mode, not full open mode to transmit on all bands. You have to go out to one of several less locked modes to get the 578 to do ham and GMRS. For some reason, 14 seems to come to mind as the most open setting number.
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22 hours ago, axorlov said:
J-Poles demonstrate high common mode current, much more than dipoles and much-much more than 1/4 waves with ground plane. This is the reason Ed Fong antenna is a lousy choice if mounted on metal mast, SWR is all over the place because of coax coupling with the mast. Why more than one, look here at Figure 3: https://palomar-engineers.com/ferrite-products/ferrite-cores/ferrite-mix-selection On UHF frequencies, their sample bead has only 80 Ohm impedance, and you want much more, maybe 600 Ohm. And on UHF frequencies multi-turn toroid chockes also do not work because of capacitive coupling between turns.
This page was better: https://palomar-engineers.com/antenna-products/1-1-balun-kits/how-many-chokes-do-i-need
When I was running a J-Pole it was on a PVC mast and the coax never passed by any significant metal to couple with. I agree if you can't avoid a metal mast or aluminum siding, chokes will be necessary. My current 1.25m J-Pole is on a PVC stand-off away from the metal mast with looped coax for common mode suppression, it's tuned for my local repeaters and the SWR is bottomed out, basically 1.11.
14 hours ago, gortex2 said:I still am baffled why folks buy the Ed Fong when in the end they could buy a TRAM or Browning for same price and be a better antenna.
Or make one from junk they have laying around. It's the appliance buyer mentality. Fong is like Midland, best of marketing.
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23 hours ago, axorlov said:
With Ed Fong antennas you need ferrites, and a lot of them. Sweet spot seem to be between 5 and 7.
But if SWR does not change when you manhadling the cable, whatever number you have is good already.
Why does a J-Pole need ferrites? And why more than one?
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I just had a thought about the VFD's I see at work ... they are always completely shielded, they are not standing alone on rooftop equipment the way they are in mechanical rooms. In fact, some Carrier brand equipment has some of the electricals inside 3 layers of RF shielding. Really annoying to take the panels off for testing. Either something inside is very noisey or very prone to receiving noise. Manufactures don't put in an extra screw, much less an additional stamped panel if they don't have to.
Now you guys have me wanting to take an SDR receiver into a mechanical room with stand alone VFD's
Approved for Ham & GMRS radios
in General Discussion
Posted
There is another problem with using AI as a reference ... it has been known to lie.