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Showing content with the highest reputation on 12/09/22 in all areas
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Taking longer than expected
wayoverthere and 2 others reacted to rdunajewski for a topic
There seems to be a lot of licenses held up by the FCC. They did have an outage recently but we probably won't see the new licenses until after the Sunday full database gets released. The daily files are missing some records but the weekly file resyncs the whole database.3 points -
Is Radioddity DB-20G 20 watt mobile radio good?
catbrigade and one other reacted to CentralFloridaGMRS for a topic
I just got the Wouxun KG-XS20G PLUS. Getting about 26 watts on some channels. 24 on the rest. This is one of the best radios I've ever had.2 points -
Home made/own GMRS Repeater
MichaelLAX and one other reacted to WRUU653 for a topic
Oh man ? remember to tip your waitress lol2 points -
Don't update NEW Radios firmware till checking your version and 'new' version (Doh!)
pcradio and one other reacted to MichaelLAX for a topic
Welcome! Please edit the typos in your firmware version numbers (006 vs 009) so as to not cause the next reader as much confusion as it caused me. Once corrected my post will seem superfluous! ?2 points -
Minimum distance between antennas
SteveShannon reacted to KAF6045 for a question
You have confused frequency band (CB) with channel bandwidth (GMRS). GMRS operates on 462/467MHz (approximately 60cm). CB is ~17 times longer in wavelength, and with only 4W output, probably won't be seen by a GMRS antenna. Conversely, even with a 50W transmitter, the CB antenna is unlikely to capture too much of a signal. (The mag-mounts on my rust bucket are only about 18" apart). Of course, if you're really concerned, the solution is to STACK the antennas -- one a few feet above the other -- since the beam pattern is minimal off the end of the antenna, and maximum off the sides. And likely intended for mobile installations where flexibility is more important -- who has room for 9913 with roughly a 1ftx1ft area needed to make a 90deg bend.1 point -
Home made/own GMRS Repeater
SteveShannon reacted to KAF6045 for a topic
The keyword is at the end of (c)(1)... That word is AND... It is not a case of either (1) or (2) -- Both clauses must be true. Since the authority of the individual license is limited to immediate family, they are identifying with the licensee's call sign... IOWs: ALL users of the repeater are operating under the single call sign, and those users are properly IDing. Third party users do not meet the requirements of (1).1 point -
Tropospheric ducting?
AdmiralCochrane reacted to marcspaz for a topic
Temperature inversions and inversion levels are what causes the refraction (largest impact on the refractive index), lending to what we call Tropospheric Propagation and Tropospheric Ducting. Makes sense to postpone blasting when there is an increased risk of high power(ish) RF in the lower atmosphere.1 point -
Is Radioddity DB-20G 20 watt mobile radio good?
MichaelLAX reacted to wayoverthere for a topic
Eh, I'm just relying on a small bit of anecdotal evidence, there may well be more above what I've heard. I agree that "most all" may be a bit of over-generalizing if we're considering all radio traffic...the phrase may be accurate for amateur traffic, but I suspect air traffic is pretty significant in the overall scheme of things.1 point -
Is Radioddity DB-20G 20 watt mobile radio good?
kerstuff reacted to wayoverthere for a topic
What I've heard up this way (mostly the air traffic control) was around 118 and 121mhz, but yes, definitely AM....I guess that's the bit excluded by "most all".1 point -
Taking longer than expected
kerstuff reacted to MichaelLAX for a topic
That's BUL, and you of all people should know that! (KQ4BUL, that is...)?1 point -
Salton Sea to get federal drought funds - Hurrah to OffroaderX!
SteveShannon reacted to Fernleaf for a topic
@OffRoaderX watched your video on the Salton Sea. It’s amazing how many lakes are drying up. Makes me wonder how many others have been used for governmental test sites without revealing what was dumped in the waters. Good job on making this issue public. Also, as a side note, really enjoyed all your Rock Crawler videos. Made me appreciate Jeeps and what they could endure. (And, like your videos on radios, kind of makes me want one of those wranglers, too...? )1 point -
You just got your GMRS license, now you want your own repeater?
SteveShannon reacted to Fernleaf for a topic
If you have the KG-1000G radios, it’s not cheaper than buying the Retivis repeater, but at least these are 50 watt machines. For your family use, they probably do fine. I’m going to set them up to extend the range in my area as OffRoaderX did and run a test for range as well. Since it won’t be used 24/7, I won’t have to worry about duty cycle and overheating. It will be interesting to see what you come up with.1 point -
Does anyone know how to use a SV4401A vector network analyzer ?
Borage257 reacted to SteveShannon for a question
I agree with KAF6045; make sure you know how to sweep the antenna first and that you see something that makes sense to you. Then sweep the antenna using the other port on the analyzer to make sure you're seeing the same results on both. Only after you have confidence in the analyzer and your ability to analyze an antenna will you feel comfortable performing a two port analysis of a filter or one side of the duplexer.1 point -
Home made/own GMRS Repeater
SteveShannon reacted to MichaelLAX for a topic
Oklahoma's favorite rock and roll band is Derrick and the Dominos! ?1 point -
I'd have to concur -- that display has "LogMag" traces for both single port (s11) and dual port (s21), a Smith chart showing complex impedance, and something for phase (shift?). I'd suggest starting simple -- one trace, configured for SWR, and again -- test using the antenna only until comfortable with reading the device.1 point
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Tropospheric ducting?
AdmiralCochrane reacted to WRVD382 for a topic
Not sure that this is the right topic to discuss inversions. Retired now but worked in mining prior. Due to the location of our operations it was a requirement to receive a daily weather report that had inversion information. If the inversion was below 3000-3500 feet at our location we rescheduled our blasting operations. Also inversion ceilings would change as the temperature increased. I now wonder if this would affect our radios at times. Also inversions are more likely to occur in colder weather. Could this affect our radios?1 point -
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Input and Output Tones
SteveShannon reacted to wayoverthere for a topic
Also good to mention, though maybe not as common...these may be called DCS, or DPL.1 point -
Does anyone know how to use a SV4401A vector network analyzer ?
SteveShannon reacted to KAF6045 for a question
Use the antenna as a learning tool -- that's a single port connection. Duplexer might become a two port connection.1 point -
In the unified channel numbering scheme -- "channel 16" is a SIMPLEX channel transmitting on 462.xxx. That handheld either needs a channel marked something like: 16rp, or similar -- or the radio has repeater channels labeled as 23-30 (15rp-22rp), and you want channel 24 (16rp). Or was that "16 4" supposed to be "16 r" for repeater. If so, I have nothing to suggest. Your photo shows a green LED and signal strength meter; most radio's I own use green for RECEIVED SIGNAL, while the other rig is showing a red LED (typically used for transmit). It's as if the receive and transmit radios were reversed.1 point
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Home made/own GMRS Repeater
MichaelLAX reacted to Fernleaf for a topic
And here I thought it was just a typo! Good one!1 point -
Home made/own GMRS Repeater
MichaelLAX reacted to SteveShannon for a topic
I see what you did there … ?1 point -
Taking longer than expected
WRUU653 reacted to wayoverthere for a topic
This, sometimes it isn't so much an issue with the site, as either an issue with the data pushed out from FCC, or where FCC has an issue pushing out the data at all (happened for a bit in oct,iirc).1 point -
Wouxun KG-1000G plus repeater
WRUU653 reacted to SteveShannon for a question
I don’t know if you watched these videos but Randy (@OffroaderX) discusses some of these things:1 point -
I recently wrote an article on this very topic. You can find it here: http://ogdenarc.org/downloads/Transmission Lines - Setting the Record Stright.pdf Included in this article I also cover connectors which for GMRS should be an important consideration. I've also attached it here. 1225397544_TransmissionLines-SettingtheRecordStright.pdf1 point
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I voted no for a few reasons. I don't want the sticker on my truck. Someone close enough to read the sticker is likely going to overload my receiver front-end. I don't always have the radio on and it's on varying frequencies when it is on... to name a few.1 point
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Another digital post.
FreqieRadio reacted to OffRoaderX for a topic
There are also people like you and me rolling through stop-signs every night, which might be a better comparison. To compare breaking an FCC rule to murder is absurd and something only a true "sad HAM" would say. So.. Congratulations.1 point