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Locked Re: Transmit Loop?
I have a pic of a 6 foot 3 1/2 in irrigation pipe helically?wound with 44 feet of 3 inch copper sheet on QRZ? Used a gamma feed.? Q was extreme.? I only had 2khz bandwidth on 75 meters and the ss
By Mike Penkas <mpenkas@...> · #15929 ·
Locked Re: Transmit Loop?
They are extremely easy to build yourself. However, be advised that any mag loop is extremely narrowbanded. On 40-meters with my homebrew 1-Meter diameter 1/2-inch copper tubing loop, the 2:1 SWR
By W0LEV · #15928 ·
Locked Re: AM frontend overload?
I observed strong intermod spurs from AM BCB stations caused by oxidized contact in my antenna (although not a loop). Copper oxide is a semiconductor. Cleaned the contacts, and the spurs were gone.
By vbifyz · #15927 ·
Locked Re: Transmit Loop?
Note to above. There may be some i have not seen.( commercial)
By Simon · #15926 ·
Locked Re: Transmit Loop?
I am afraid i cannot recommend any ( except maybe for the ciro nazzoni, but that¡¯s very very expensive) All i have seen are over priced for what they are. Can you make one?? It if done well will out
By Simon · #15925 ·
Locked Re: AM frontend overload?
I guess that's likely. I just looked up. There are 2 broadcasting station with less than 1 mile from my location. They are broadcasting at 1KW during the day time. Only one station is required to
By Kun N7DMR · #15924 ·
Locked Re: AM frontend overload?
Probably one or both of the AM broadcast stations that are generating the spurious signal decreased power at "sundown" as required by their licenses. 73... Randy, W8FN
By Randy Farmer W8FN · #15923 ·
Locked Re: AM frontend overload?
And I didn't touch my SDR or receiver at all. The RFI just magically "disappeared" at around 4pm today.
By Kun N7DMR · #15922 ·
Locked Re: AM frontend overload?
And it's my local time 4pm, that AM overload magically "almost" disappeared now. Not sure why.
By Kun N7DMR · #15921 ·
Locked Re: AM frontend overload?
Check your loop. Maybe there's something mechanically damaged that's acting as a diode and creating the RF trouble. If the loop has a preamp can you turn it off and see what happens. A broadcast
By Randy Farmer W8FN · #15920 ·
Locked Re: AM frontend overload?
It appears today (It could happened earlier but I didn't check). I need to try to turn my loop and see if I could notch them out. It's possible that the wind may have blow my loop into a position
By Kun N7DMR · #15919 ·
Locked Re: AM frontend overload?
It could be receiver overload, but a very severe case. For sure there's intermodulation (sounds like at least two signals). Does the garbage appear no matter where you tune the receiver? If you had an
By Randy Farmer W8FN · #15918 ·
Locked Re: Transmit Loop?
I am also interested in purchase one transmit loop. If there are any that could cover 40-80m and maybe 20-30W. Ideally with remote tuning, so that I could set it up in my attic.
By Kun N7DMR · #15917 ·
Locked AM frontend overload?
https://youtu.be/4hRGn9QiiqI ( https://youtu.be/4hRGn9QiiqI ) (Recording of my terrible RFI) Is this AM frontend overload?? What could I do?
By Kun N7DMR · #15916 ·
Locked Re: LZ1AQ choke and feeder length questions please.
Agreed, but we still have squirrels, rabbits, rats, badgers & deer. Even crows can be problematic. Rabbits will quite happily chew through anything that looks like grass or plant roots, and for some
By Martin - Southwest UK · #15915 ·
Locked Re: LZ1AQ choke and feeder length questions please.
Everett Inflation is going silly here.food prices etc soaring..I expect to see fox population decreasing soon.. Some particular fat healthy looking examples around here!! Hedgehogs all gone i am
By Simon · #15914 ·
Locked Re: LZ1AQ choke and feeder length questions please.
Times were hard!
By Simon · #15913 ·
Locked Re: LZ1AQ choke and feeder length questions please.
Hi Tom, ?You Brits don't have any critters left because you eat them all.?Everett N4CY
By Everett N4CY · #15912 ·
Locked Re: LZ1AQ choke and feeder length questions please.
Apart from Simon¡¯s suggestion I don¡¯t know what else to say, Fred. Steel pipes? We¡¯re very lucky the UK isn¡¯t crawling with groundhogs, skunks, coyote or muskrat. No doubt someone will post a
By Tom Crosbie G6PZZ · #15911 ·
Locked Re: LZ1AQ choke and feeder length questions please.
Here's what I'm dealing with... photo links below. There's a creek that run in the area the closer I run cables to it the more I get chewed up. The most wanted list of critters here are
By Fred KB4QZH · #15910 ·