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Re: A new FC-40 group ?
kc5cqw
I second this motion. All in favor say "I".
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--- In YaesuTuner@..., "k8nxx" <n4cla@...> wrote:
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Re: A new FC-40 group ?
Carl Davis
Hi Cedric, I also have a FC-40 and ATAS-100 along with a FC-30. Are we looking to make a new group to keep the spammers out? May be Yaesu-Autotuners and have key words that would include all the models in the description of the group. I don't know if it would increase the amount of postings by members but I think a lot of the lurkers would still find the files and posted info helpful.
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Carl, KB1EJH --- On Wed, 4/7/10, C??dric <supercontroleur@...> wrote:
From: C??dric <supercontroleur@...> |
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Re : Re: A new FC-40 group ?
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Re: A new FC-40 group ?
raimo
Hi Cedric.
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Only Problem I can see is the language. .. Somehow I can write and read English but French not at all. My position will be just as a member, I am using already too much time in the web. 73s de rami, oh6bi --- In YaesuTuner@..., C??dric <supercontroleur@...> wrote:
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A new FC-40 group ?
Hello everybody,
I'm Cedric, my call is F5PSR, I'm a FC-40 and ATAS-100 owner. I don't write here but as I spend a lot of my time on the Web (I'm moderator on others french groups) I propose to create a new group on Yahoo as it seems there is no more moderator here. Tell me if you are interested in this idea or not. If you are OK, tell me also the title you would like to have on this new group. 73 - Cedric f5psr |
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Re: Seriously?!
raimo ilkka
Hello FC-40 users. ( I dont mean these spammers !!)
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I tried to sen kindly notes to owner but his email address doesnt exsist anymore. If looking member list there can be found two moderators. Only one address is working but no any reply. If nothing happens after while I will quit. Anyone good ideas for alternative list,,, or if somebody wants to start new ?? 73s es GL de rami, oh6bi --- On Tue, 6/4/10, kc5cqw <kc5cqw@...> wrote:
From: kc5cqw <kc5cqw@...> |
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Re: FC-40 Mobile/
kc5cqw
It looks like you have it covered except...
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What are you using for a mount? Isolation from ground here is critical. Take a look at my posted pictures; I use a Breedlove HF Insulator. Well worth the $40. You need a high voltage dielectric with very low capacitance. This setup can produce upwards of 10's of kilovolts! I added a cap hat just incase; it seems to help. Personally, I haven't made a contact on 40m yet. My estimation is that I only have about 25-40% efficiency on 40m. Probably less... I haven't dedicated any significant time in figuring the numbers. My setup tunes from 7.1MHz up to 6m just fine. Feel free to contact me for further info if needed: my call at gmail dot com --- In YaesuTuner@..., "kd4hri" <mark@...> wrote:
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Re: FC-40 Mobile/
开云体育Years ago i had a fc1000 in my car (rf wise almost like the fc40) Problem in almost al setups is rf isolation on the lower bands …. A short whip becomes more and more impedance on the feedingpoint several hundrets to thousands of ohm A military whip with its foot was the solution … 3.5 megs with a 2.5m whip … no problem Topband with a 5m whip bent over the car in a bow form … If you find no match on a band (40 you said) why not bring a capacitive hat to the whip Better as a coil (lower loss) Dg9bfc Sigi ? ? Von:
YaesuTuner@... [mailto:YaesuTuner@...] Im Auftrag von kd4hri ? ? Is anyone else using the fc40 mobile to drive a whip? |
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FC-40 Mobile/
kd4hri
Is anyone else using the fc40 mobile to drive a whip?
I have my FC40 mounted onto the spare tire bracket of my RAv4. It is connected to a 1/4 CB whip (only 2-3 inches of wire between.) The ground on the FC-40 is directly connected to the ground of the vehicle and all part of the vehicle and bounded together by grounding straps. Each lead into the radio, antenna control, mike, remote head,and speaker, has an RF choke on that wire. Works great on 30-6 meter, but will not tune 40m. If I add 6 feet of wire to the tip of the whip, it will tune 40m NP. Questions: 1. Anyone have this set up working on 40m? 2. Yaesu's whip for the FC-40 is 8.2 feet long, the CB whip is 9'. Should I trim the whip back to 8.2 feet? 3. Should I ground strap the spare tire itself? 4. Anyway to add 'length' without having a trail 6 feet of wire off the end? A capacitor across the FC-40 terminals? A small coil between the FC-40 and the whip? Also, 17m will tune, but compared to 30,20,15,12,10 and 6, it seems to have higher (1.7 to 1.9) than the other bands (less than 1.5 all) |
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About Our List
raimo
Hi All.
I sent messages to this list owner. Looks like Owners mail address is not anymore working. So I checked moderators and sent below copied message to them: --------------------------------- Hello William ! I am member of your group. I found from member list that you are the list owner. For me list is ok even not so many posts, I am a bit lazy for reading long stories... Some time ago there joined members who are intrested other things than antennas and FC40, posting "nice links". If this continues, very soon our list will be difficult to read. Maybe virus-links etc. I am kindly asking you to remove those messages and members. So that we can keep this place for our tuning infos. Summer is soon coming here and I will start again my antenna/FC40 tests. Would be nice to have this group to send my data. 73s de rami, oh6bi |
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Re: wire
K9UDX
N4JTE has written an article describing how to make a 6 band version for around $35. The article can be found on at . Bob loves experimenting with antennas.
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vk2dmh wrote: You can make a FAN multiband antenna with several sets of wire, for example set up dipoles for 80m, 60m and 17m then see if the tuner will find a happy setting for all your frequencies. In the HFLINK group, which is about HF radios that use Automatic Link Extablishment (ALE) they have several auto-tuner broadband antenna designs like this. --
Bob Harris (K9UDX) Bath, NH |
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Re: wire
vk2dmh
You can make a FAN multiband antenna with several sets of wire, for example set up dipoles for 80m, 60m and 17m then see if the tuner will find a happy setting for all your frequencies. In the HFLINK group, which is about HF radios that use Automatic Link Extablishment (ALE) they have several auto-tuner broadband antenna designs like this.
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Good luck! de David, VK2DMH PS: Since this group is now being spammed, I have switched off receiving emails from here. Sorry. Email me direct if you need to. --- In YaesuTuner@..., "raimo" <oh6bi@...> wrote:
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Re: AH3 vs FC40
fil_jds
Hi J-C,
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sorry to reply this late, as usually this group was not very much "alive" I did not visit it for quite a while. Unfortunately, on the topic of sloping wire antennas and RF ground on a sailbout, you will find 99 different opinions and views. Look up on eHam forum, you will find the same comments stating that the impedance matching range of the FC40 is unfortunately a bit narrow, hence it is quite picky and sensitive to wire length. Even in the home QTH, trying out inverted-L wire antennas WITH a large RF ground system (2.4 m long earthing rod, with several radial wires about 5 cm buried in gravel, with lengths ranging from 20m,15m,10m,7.5m,5m to at elast cover most of the HAM bands, it was still rather difficult to find a wire length offering all-band tuning with the FC40. About 23m was OK, and also around 9.6 m. On the boat, I've tried a lot. As RF ground I have 4 inch wide copper straps, running from the FC40 ground lug to both sides of the pulpit bases, and from there also connected to the lower S/S lifelines of my Jeanneau 37 ft. From the tuner RF ground lug also 2 sets of radial wires, 10m and 5m long, tied with tie-wraps to inside of the aluminium toe-rails (le rail qui court le long des c?tés du pont, entre pont et cocque). Furthermore copper tape to the bronze underwater strut supporting the propeller axle. Since originally the boat also had a woven tinned copper strap running from engineblock (also the DC negative ground), and to prevent potential galvanic corrosion issues due to ground loops or high voltages pumped into this strut, I blocked the DC with about 0.15 microF of high voltage caps. I do think I have quite some RF ground availbale with this. I never did run copper tape to the iron keel bolts. That would be at least 5m of copper tape which for the higher frequencies is just too long. Antennas: I tried all lengths between 14m and down for the sloping backwire antenna (of course I do not use the backstay but a sloping wire parallel to the backstay running to the starboard side of my pulpit ("balcon arrière"). No length was ok for 80m-40m-20m-17m and 15m allband, except around 9.6m. Length is very critical. Sometimes adding a little "pigtail" extension at the point where the bottom of the antenna wire is bolted to the isolated through-hull helped 80m tuning. After that Greg on the SSCA forum talked me into a parallel multiwire system, with 13m, 6.5 and 3.75m parallel wires with 10cm spreaders in between, but all connected together at the base, and with a 1:1 current balun at the bottom (derived from K9YAM antenna). That tunes quite OK on all those freq's,theory says every freq will choose maximal current in the optimal choice of wire, and still offering low-angle radiation. Others critised this heavily, saying that its radiation angle behaviour would be very unpredictable. It tuned well but DX results were bad. So I took it down... Now I have a wire of about 10.5m, connected to the isolated through hull. Directly connected to the underside of the through hull, inside the back lazarette ("coffre arrièe tribord") I have the HD 1:1 current balun (13 turns of teflon coax around a Amidon T300A core) and 40 cm of teflon coax from the balun to the FC40. I did this to avoid 45cm of antenna wire running inside the "coffre" to the FC40. I now have the RF ground system connected to the balun ground output. I have no idea of losses in this balun + short coax system to the atu, but it does tune well on all my wanted frequencies, even on 12 Mhz marine SSB freq. I had DX contacts to Japan with this on 17m and 20m, from the sea. Does that prove anything? Not really....I guess a more standardised test with a fixed receiving station and also field strength measurements and antenna modeling would tell me more. The 10.5m wire length should give low angle take off from 40m till 17m (really the limit for 17m since 10.5m is just a triffle more then 0.625 Lambda) So far my story. Jan ON3ZTT --- In YaesuTuner@..., JD Baillie <tisvcs@...> wrote:
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Re: wire
raimo
Hi Scott.
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I am sorry, but there is no such "all band wire" !! I have tried many lengths with different grounds and counterpoises. It is allways compromise with other things. Try to read group messages and files , then compare members results with your possibilites. 73s es GL de rami, oh6bi --- In YaesuTuner@..., "ve3wwt" <ve3wwt@...> wrote:
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Windom Test
raimo
Hi All.
I made Single Line Feeder Windom Last weekend. Matching (tuner) Unit: FC40 Yaesu endfed tuner, Radio Yaesu FT897. Antenna was working against ground system, tuner at 3 m height. Antenna was inverted V position, highest point 11m from ground, hanging from feeder connection. Angle abt 120 gedrees. Wire ends more than 5 meters from ground. Dimensios at start: Longer wire 28m (91.8 ft), Short Wire 14 m (45.90 ft) , Feeder 8.2 m (26.90 ft) First I got good match all HF bands 1.8 MHz to 29 MHz except 7 MHz. After some calculations I shortened longer wire 75 cm and I got perfect 7 MHz tune, But same time I lost 3.5 to 3.6 Mhz match. After many canges I finally got this windom working at all HF bands: Dimensions at the end: Longer wire 27.35 m (89.7 ft) , Shorter wire 13.45 m (44.10 ft) , feeder 8,2 m (26.90 ft) . It was not enough time for DX testing, but local (10 to 300 miles ) QSOs at 80 and 40 m Gave similar reports between horisontal full size G5RV and this Windom. I did good experiment, easy, cheap and fast made antenna giving OK results. 73s de rami, oh6bi |
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Re: 148 ft wire testing
raimo
Hi All.
I copy here a messge I wrote in another group, maybe it is intresting also here : ' ' ' Hi BoB and All. Thanks. Yes I have somtimes red those stories, this 90 meters is new to me. There is plenty of info, but mainly idea with these kind of tuners is that operator has to know what he is trying. As well as normal dipoles etc. These are not any magic boxes, just simple LC tuners. (with CPU and other clewer stuff) This morning here in Vaasa area temp was minus 2 celsius, needed to skratch ice from windscreen, the sea is getting soon ice cover and not so much time anymore at summercottage. I already brought some radios to town and next random wire tests starts again in May. Next eperiment with FC40/FT897 is "original" windom with single line feeder. I made original windom some yaears ago with AH3/IC706 and that was working very well. Hopefully I get this tested next weekend. My target with all these testings is to find good travelling wires, so that I dont need to use time to search the lenghts. At "permanent" QTHs it is different, as I have had some antennas many years in same place.. 73 se GL QRP DX de rami, oh6bi --- In CW-Code-Warriors@..., MAXXOUT2@... wrote:
--- In YaesuTuner@..., "raimo" <oh6bi@...> wrote:
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Re: 148 ft wire testing
raimo
I made a mistake: copying partly from old message:
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119 wire first ... should be 148 wire. --- In YaesuTuner@..., "raimo" <oh6bi@...> wrote:
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