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Order Turn Around Times
An order fulfillment update as of 8 May, 2018:
I ordered a ubitx on 3 May.? The Item shipped on 8 May!? Given there was a weekend involved between the order and ship dates, this is actually a 2 day order turn-around!? Performance of this caliber is a far, far cry from the 2 month backlog and is?very much appreciated.? |
Re: Thunderbolt and lightning, very, very frightening me
Looks like good advice.
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The Polyphaser stuff has been around for awhile, and is designed for this kind of use. If you are in an area that sees lightning, you want a proven system. And you want to follow all instructions closely. Here's a discussion on eham that might put the fear of god in you. ? ?? Unfortunately, those whose budget just barely covers a Bitx40 might decide to go without. This one is good to a kilowatt, $68.99 plus shipping.? ? ? ?? Plus multiple ground rods, #6 copper wire, ... Gets worse if you have multiple antennas. One of these gas discharge tubes might do it for cheap: ? ?? but I'm not about to hazard a guess as to what's appropriate around lightning. And that eham discussion suggests the Polyphaser thing is more than just a GDT, has some caps in it too, and I have no idea what else.? Anybody with a cheaper solution they feel is adequate for QRP levels? I'm sure lightning could find a way to bite us here. But being off grid with no landline phone has its advantages. While in college I spent summers on BLM fire crews, once spent a couple weeks in a tower spelling the regular lookout.? They take lots of lightning. Had a special stool you could cower on in the center of the floor during a storm, big honking glass insulators on the bottom of the legs. Just sit there and watch the sparks fly about within the cabin a few feet away. And then when it was over, the VHF radio still worked. Jerry On Tue, May 8, 2018 at 08:24 am, ajparent1/KB1GMX wrote:
Doug,? A ground rod outside (preferable a 8ft or longer...) with a Polyphaser arrester at the top of it |
Re: Thunderbolt and lightning, very, very frightening me
No question that is the correct way to do things.? I've actually had a polyphaser protector bookmarked and just got cheap and didn't want to spend almost as much as the radio is worth to protect it which I know is no excuse.
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Does anyone have any experience with Altelix? Looks like it might be a good enough solution at a much lower price point.? On Tue, May 8, 2018 at 08:24 am, ajparent1/KB1GMX wrote: Doug,? A ground rod outside (preferable a 8ft or longer...) with a Polyphaser arrester at the top of it ? -- |
In past years 2009 the last solar minima I worked a lot of DX using only 4W.? On 10 a good antenna can
help a a lot so a dipole for 10 well? up and? a rectangle taller than wider (73x146" choke fed at the bottom) with the top at 20ft both worked very well as they heard better.? It was clearly if I could hear them they could hear me. Allison |
Re: Thunderbolt and lightning, very, very frightening me
Brian L. Davis
Grounding experiences, from my commercial radio days, says to not take the equipment ground to the electrical panel ground.
The problem is that if your radio antenna or equipment ground is better than the provider ground, lightning will travel from the electrical wiring feeding the house to your equipment ground. We ran into this at remote tower sites as well.? If we grounded the tower and equipment it would always get hit but if we didn't ground the tower and equipment there was no "ground" for the lightning to flow to. When we had a building with a grounded tower we never tied to the commercial ground as the tower ground was always better than the panel ground and would draw lightning from the distribution lines to the tower ground. Just a thought. |
Re: Amateur Radio Kits Case Arrived - 5 STARS * * * * * -#ubitx
¿ªÔÆÌåÓýHelloI¡¯m French station F1BFU.? I ordered my uBitx on April 22 and received it yesterday. Very correct packaging with plastic case. Look at the pictures of the package unpacking. I am very happy with it and now I have to assemble it and put it in the box that has not arrived yet. 73 QRO Gilles F1BFU-QRP |
Re: Thunderbolt and lightning, very, very frightening me
Doug,? A ground rod outside (preferable a 8ft or longer...) with a Polyphaser arrester at the top of it
and the cable connecting to that first.? Then a COAX coming inside.? That is a generally safer and brings all static charges to ground first.?? To make it NEC (national Electric code) a wire #6 or heavier from that ground rod to the house ground usually near the power entrance is required.? (all grounds bonded together.). I also advise for dipoles and other non DC shorted (and grounded) antennas a resistor at the feed point of 100K (2W) to bleed static as well.? Static build up from wind can be as damaging as a bolt from the sky just not as noisy. Disconnectig is good practice but a grounded and suppred connection outside its advised. Allison |
Re: Thunderbolt and lightning, very, very frightening me
After getting struck by lightning once, I have my ladder line grounded through its balun to a ground bar in my shack right where it enters. This will not protect from a direct strike, but it will handle nearby discharges. A direct strike will vaporize my ladder line, so there is no point in me going over the top protecting it.
At the shack subpanel, I put in an 8ft galvinzed rod connected to the panel with 8ga wire. Then from the panel it goes to a ground bar up on the wall, where all my equipment is grounded to. The tower outside has three of these 8ft galvanized rods on it, one off of each point, all bonded together with 8ga wire. The tower's ground is seperate from the building's due to the fact I would have to cross three cables from the cable co at six inche depth.? I am not the best to ask on this subject, but this is just what I have setup. -- ---------- N5WLF, Greggory (or my nickname, Ghericoan) General Class, Digital Radio Hobbyist |
Thunderbolt and lightning, very, very frightening me
Full disclosure, I know better.? As we enter thunderstorm season around here lightning surge moves further up my list of issues to address.? I have one RG8X cable coming in through a window that I connect to whatever radio I am playing with at the time (BITX40, ?BITX or SDR).? I am guilty of using a temporary solution long enough to bring the temporary status into question.? My current laughable protection scheme is lacking.? If I am away for a while or the sky looks questionable I disconnect the cable and leave it sitting loose.? If it looks really bad I have weatherproofed the cable connector and thrown it back out the window.? On my list is to at least properly ground the cable where it enters the structure instead of pretending to operate portable in my house.? So now that I have embarrassingly admitted my sins to the group my question is this, what are you doing?
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Re: Low power output on ubitx
#ubitx
#ubitx-help
I don't think something is broken. Using an average power meter I get a little more than 10w on 28mhz, 2 on 21, 4 on 20, more 10 on 7. To increase it on the higher bands we should modify like the designer suggested Il 08/mag/2018 15:04, "richcarter03052" <re.carter@...> ha scritto: I just finished assembling my uBitx and get what I think is low power output.? I tried two different power meters to verify my results.? Measurements were taken in CW with a dummy load and 13.8VDC. |
Re: Low power output on ubitx
#ubitx
#ubitx-help
Gordon Gibby
¿ªÔÆÌåÓýI still have the original software, and mostly all I do is digital or some CW. Those numbers at least on the bottom three bands seem normal to me.
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Re: Amateur Radio Kits Case Arrived - 5 STARS * * * * * -#ubitx
¿ªÔÆÌåÓýI guess if it were all gold plated and free into the bargain.....there would still be someone to comeup with some trivial complaints ! Dave On 08/05/2018 13:47, richcarter03052
wrote:
I got my case last week and assembled the radio.? I really like the case.? It's well made and well worth the money. |
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