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Showing content with the highest reputation on 07/08/22 in all areas
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I did at one time. https://www.g0mrf.com/ao-40.htm I had a portable setup for AO-40, 70cm SSB uplink working with an 11 element M Squared Yagi, https://www.m2inc.com/FG4205011 and the down-link was on 2.4GHz with a UEK-3000 down converter to the 2 meter band working with a 24db dish antenna. http://websites.umich.edu/~umarc/files/misc/UEK-3000.pdf https://www.radiolabs.com/wireless/wifi-antennas/directional-wifi-antennas/parabolic-grid-wifi-dish-antenna-24db-2-4-ghz/ The radio I used at the time was a Yaesu FT-847 with an optional after market IRAD RX IF crystal filter for SSB. I made a couple of contacts through it. The down-link signal wasn't that strong. https://www.hamradio.co.uk/userfiles/file/FT-847.pdf https://w6aer.com/ft847-inrad-filter-modifications-upgrade/ Because of some screw up the satellite ended up in a very highly eccentric orbit. At the farthest point the distance was around 40K miles. The delay in the down-link in the head phones was about a 1/2 of a second, very noticeable and hard to adjust to hear one self with a delay. The advantage at that distance is the satellite hardly moved for about 10 to 15 minutes making manual static pointing of the antennas practical and almost no Doppler shift. I lived in a ground floor apartment at the time so I needed to to drag the whole antenna setup outside every time. That was done late at night to attract far less attention. The last thing I wanted were the other tenets calling the local PD thinking I was some kind of spy or terrorist. The van had enough strange looking antennas on it as it was and I got a few people driving circles around it at shopping centers staring at them while giving me weird looks. Oh well. 8-/ I made a few contacts on FM through a low earth orbit satellite, mode U/V, from a mobile using an Icom IC-706MKII I had with some simple vertical antennas on the roof. Those satellites tend to get very busy since they are far easier to work.2 points
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The Surecom SW-102 is designed to be calibrated by the end user. While there is a chance it's accurate out of the box, it's not always. There is a possibility that you need to have your meter calibrated.2 points
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Well, it was new when Michael opened the tread in Feb 2021.1 point
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ISS Satellite Contact a Few Minutes Ago. Advice?
SteveShannon reacted to marcspaz for a topic
@Lscott Great post. Sounds like you had some nice gear. The FT-847 looks awesome. I know what you mean about the weird looks, too. Especially with my Jeep, which is 6 inches higher than stock with 37" offroad tires and 3 86"+ antenna's hanging off the bed. It's a convo starter almost everywhere I go.1 point -
Getting into a repeater, but not getting a return
SteveShannon reacted to Borage257 for a question
@SshannonThe Tones are correct. On cooler days/evenings, I can get clear responses from the repeater with tones in place. I've noticed I can get squelch breaking repeater responses when the outside air temperature is less than 90*F.1 point -
That could be anything -- 462MHz isn't really affected by ionosphere changes (which is why HF bands tend to get better on lower frequencies as the night goes on). Wild hypothesis: the repeater is exposed to sunlight and high temperatures during the day, which is causing a deterioration of the repeater output signal. As it cools off in the darkness, the signal improves. Maybe the duplexer is getting detuned, maybe it has some sort of rollback in the finals based upon temperature...1 point
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ISS Satellite Contact a Few Minutes Ago. Advice?
marcspaz reacted to SteveShannon for a topic
This website has a list of recent radios that offer cross-band repeat functionality: http://www.ssiarc.ca/cross-band-repeat.php1 point -
Is the Baofeng GMRS-9R the fully fixed version of the Baofeng UV-9G?
MichaelLAX reacted to wayoverthere for a question
They've been pushing the tacticool folding tape measure antennas on Amazon for awhile...perhaps they've decided to take a shot at what btech has done with baofeng and what btwr and others have done with wouxun... spec'ing a run of certified/certifiable radios? The telling part would be whether there's another source for that model besides Abbree. If not, custom spec is probably what it is....for Baofeng, its a win because they just make the radios and ship them, Abbree takes the risk on whether they'll sell or not.1 point -
ISS Satellite Contact a Few Minutes Ago. Advice?
SteveShannon reacted to marcspaz for a topic
Yes, it does. It has a built-in repeater. So it has to be able to transmit and receive at the same time. There are two radios in one package that function independently of each other.1 point -
The closest repeater listed on MyGMRS.com is Coffe675, but it's a bit far from you. You might try searching other directories like repeater book as well. Without access to a repeater you can still get good use out of your GMRS radio of you talk friends and family into using GMRS as well. It is great for outings, hiking, camping, amusement parks, road trips, etc.. (terrain dependent). Have you installed the MyGMRS app on your phone yet? It is very helpful in finding repeaters while traveling.1 point
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You just got your GMRS license, now you want your own repeater?
generalpain reacted to KAF6045 for a topic
It is also not Amateur-only. Emphasis mine: That's Part 95 A, which applies to all of: FRS, MURS, CB, GMRS, radio control, and a slew of other lesser known services1 point -
Kenwood TK-8360H
SteveShannon reacted to Lscott for a topic
Best thing is look in the service manual. If its possible the manual will explain how its done. Looking briefly it appears the answer is no to your question. http://manuals.repeater-builder.com/Kenwood/tk/TK-8360/TK-8360(H)(K2_M2)_B51-8964-00.pdf As a matter of practice I spend time hunting down all the relevant documentation, in PDF format, for any radios I have or plan on buying. I have a library of folders for each radio/model series with user guides, service manuals, notes, FCC grants, modifications if any and manufactures brochures. The last one is the first thing I look for when thinking about purchasing a used radio. Excellent source for features, exact frequency ranges, on UHF it's common to have more that one, number of memory channels etc. If I don't like what I see then I've saved myself some money by not getting something I won't like or can't use. https://pdfs.kenwoodproducts.com/30/TK-7360HV-8360HUBrochure.pdf http://manual.kenwood.com/files/53d7482397066.pdf https://fccid.io/K444155021 point -
Comet SBB-7NMO Antenna - A Modification for GMRS
ashayc reacted to FarleyInglis for a topic
Perhaps the following additional "measured Watts" Test-Information that I collected, but didn't originally report, MIGHT BE CONNECTED with what you are saying/describing. Equipment/Environment Details: BTech UV-50X2 at Low Power 20 Watts --- (NOTE: BTech Specifications say 10watts for Low Power; I'm showing 20watts on my SureCom SW102 Digital SWR Meter). SureCom SW102 Digital SWR Meter displaying Frequencies, measured SWR, and measured Watts. Two Comet SBB-7NMO Antennas both/each mounted on a TRAM 1267R 5 1/2" Mag Mount and each individually swapped-out and centered on the roof of 1999 4x4 2-Door Chevy Tahoe. ----------------------------- SBB-7NMO - No Modifications ----------------------------- 462.5500 GMRS 15 1.40 25.2W 462.7250 GMRS 22 1.42 24.7W 467.5500 REPT 15 2.00 16.8W 467.7250 REPT 22 2.01 16.6W 151.8200 MURS 01 2.09 20.9W 151.8800 MURS 02 2.11 21.3W 151.9400 MURS 03 2.13 21.6W 154.5700 MURS BL 04 3.71 25.8W 154.6000 MURS GR 05 3.73 25.7W 146.5200 2M 1.10 22.3W 446.0000 70CM 1.00 27.2W ----------------------------- -------------------------------------------------------- SBB-7NMO - Rods Cut Lower-3/4" Middle-3/8" Upper-3/8" -------------------------------------------------------- 462.5500 GMRS 15 1.00 25.4W 462.7250 GMRS 22 1.00 25.4W 467.5500 REPT 15 1.15 20.4W 467.7250 REPT 22 1.15 20.0W 151.8200 MURS 01 1.45 19.7W 151.8800 MURS 02 1.51 19.9W 151.9400 MURS 03 1.54 20.1W 154.5700 MURS BL 04 2.96 27.9W 154.6000 MURS GR 05 2.99 28.0W 146.5200 2M 1.54 24.6W 446.0000 70CM 1.09 26.7W --------------------------------------------------------1 point