Re: [Elecraft] High vertical
For what it's worth, the R6000 is very different from the R8. On 20 Oct 2014 05:48, tom...@videotron.ca wrote: Hi Robert,I can't seem to find any other messages in the reflector about this topic. But in any case I have owned both a Cushcraft R6000, and a HyGain AV620.I used both for at least 6 months before moving to a cushcraft ma5b mini beam. Both antennas seemed to offer similar performance. In this regard, I would give the edge to the hy-gain. Both were excellent for dx, I made many qrp qso's from Montreal to australia. The cushcraft had one annoying feature: The minute it rained or snowed, the resonance went far off where it was when dry. 200khz on 20m for example. The elecraft tuner took care of it but it was annoying. The hygain has a lot of threaded rods which need to be adjust to reach resonance. These rods are prone to seizing the nuts on them. But once they re set the antenna never shifted in resonance. The hygain brought me up to 200+ DXCC's. But I can tell you this: Both are no substitute for the MA5B. Both are extremely noisy. The MA5B gives two 2 S unit improvement as a minimum in almost all cases, but the noise floor dropped 15dB. Anyways, they both are good antennas, but I would suppliment them with an active antenna and a noise phaser to null out the noise sources, which improves them considerably. Hope this helps. Tom va2fsq.com On 10/19/14, Robert G Strickland rc...@verizon.net wrote: Vic... Any thoughts on choosing the Cushcraft over the Hy-Gain for a vertical? ...robert On 10/18/2014 14:55, Vic Rosenthal K2VCO/4X6GP wrote: I put up an R8 vertical on a small building (containing my shack) that sits on the roof. -- Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa Syracuse, New York, USA -- Vic -- 73, Vic, K2VCO/4X6GP Rehovot, Israel http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 shows vertical green stripes on waterfall
Various kinds of 'junk' on the screen have been reported to be caused by coax jumpers with poor shield contact at one or both ends. Try another cable if you haven't already. On 20 Oct 2014 17:08, jsdroys...@nc.rr.com wrote: Hello all, I am trying to figure out why our P3 panadapter sometimes but not always shows a group of vertical green stripes that cover about 1/6 of the width of the screen. These stripes are not related to RF frequency because if I switch bands they remain in the same location. If I remain on one band and twirl the VFO knob, real radio signals move into the green stripes but the stripes themselves are immobile. Sometimes these are not there at all. Sometimes they are near the left of the screen, more often toward the middle. Wayne gave some instructions for investigating this on PX3,but this is P3. Any ideas? Am I correct that these cannot be related to real RF interference due to the above facts? Wouldn't real RF be frequency-related? We do sometimes get RF interference that shows as periodic narrow lines on the waterfall, but these wide stripes are different. THANKS! Julie KT4JR -- 73, Vic, K2VCO/4X6GP Rehovot, Israel http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] High vertical
The main reason is that the Cushcraft R8 was one of the antennas in the comparison report on verticals by N0AX and K7LXC (cost $20 but worth it) here: http://www.championradio.com/HF-VERTICAL-PERFORMANCE-TEST-METHODS-RESULTS.3 The Hy-Gain AV-640 is very similar, but appears to have a little more top loading and is a bit shorter. It is also less expensive. Incidentally, yesterday afternoon we had a storm with remarkably high winds. I went up to look at the antenna and had to take care not to be blown down. I was /very/ glad I had guyed it at two locations. I may even add a third set of guys. On 20 Oct 2014 05:28, Robert G Strickland wrote: Vic... Any thoughts on choosing the Cushcraft over the Hy-Gain for a vertical? ...robert On 10/18/2014 14:55, Vic Rosenthal K2VCO/4X6GP wrote: I put up an R8 vertical on a small building (containing my shack) that sits on the roof. -- 73, Vic, K2VCO/4X6GP Rehovot, Israel http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] High vertical
I have an apartment on the top floor of a 10-story building with a small roof area accessible and restrictions on antenna size. I asked for advice here about antennas, and got a lot of suggestions and help, so I thought I would post my results. I put up an R8 vertical on a small building (containing my shack) that sits on the roof. The base of the antenna is about 35m above the ground. It sits on a 1m tall mast which is connected to the roof with a hinge-type mount and is guyed at two levels with 4 PES marine ropes at each level. The feedline is about 10m of RG/213. I used two homemade ferrite chokes, one near the antenna and one at the entrance to the shack, because I was concerned about RFI and receive noise. Results so far have been, in a word, great! I seem to be able to work anything I can hear, mostly with my barefoot K3. I have only used my amp a few times. I am getting good reports and breaking pileups right and left (all this on CW, of course). The antenna is not as bad as I thought it would be for receive noise, but it is not as clean as my Pixel Loop, which is exceptionally quiet. My experience with similar antennas at lower heights was not as good (yes, my call makes me DX for some, but not for the DXpeditions whose pileups I get through on the first or second call). All in all, life without a beam can be very enjoyable if you can put a vertical up high enough. -- 73, Vic, K2VCO/4X6GP Rehovot, Israel http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
