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Just asking for an opinion regarding 40 meter daytime propagation

Discussion in 'Discussions, Opinions & Editorials' started by AC0FP, Jun 21, 2010.

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  1. AC0FP

    AC0FP Ham Member

    Just asking for an opinion about QST's July propagation article! If I'm reading this right the best time and band for all around contacts in the daytime is 40 meters, while the current sunspot cycle "sucks"!

    The article indicates that during the daytime 40 meter signals can get though the D-layer, with some loss, but bounce off of the E-layer to give some useful propagation. They do indicate that this is true only if you have an NVLS antenna and not a "low angle" radiation antenna. The catch is, they indicate that there is loss as your signal goes through the D-layer! Does this mean that a 100 watt SSB signal is SOL? :eek:

    fp
     
  2. KC4KM

    KC4KM Ham Member

    NOT sol

    It's the old adage. If everyone is listening is the band dead?

    Start calling. Ya never who will hear you. Now days I only work the low bands and most of the time I can scare up someone to chat with.

    You may find more chatters around 7.250 Midday!

    Lots of luck & don't give up!
     
  3. AC0FP

    AC0FP Ham Member

    Thanks for the encouragement. I am now off work for 1/2 of the week so I think I will try it!

    I think I have heard a "GOB" (good ole' boys) net around that frequency but have never felt encouraged to try and contact them.

    73,

    fp
     
  4. KE5FRF

    KE5FRF Ham Member

    If you are interested in CW or digimodes, 30 meters is really where its at. Since January, I have logged more 30 meter QSOs than any other band, followed by 40, 80, 20, 17, and 15 (in that order). I do have a few 160 meter QSOs but thats a hard band to work right now with my loop and the vertical won't handle it.
     
  5. K0RGR

    K0RGR Premium Subscriber

    30 and 40 are both good in the daytime. 40 is typically more for regional contacts, and for more than just NVIS. Indeed, the critical frequency still isn't getting that much above 7 Mhz., so on many days NVIS isn't even possible on 40. NVIS on 60 would probably work better these days.

    But from KS, it should be harder to work the two coasts on 40, but you should be able to work the central part of the country all day, or at least until late afternoon when the band goes 'long'. I'm often surprised at how much activity is there in the daytime.
     
  6. KR2D

    KR2D Ham Member

    The old saying is "40 meters is always open to somewhere". Usually, it's regional (up to 1000 miles or so) in the daytime, and worldwide at night. There's amateur activity 24/7 on 40m. If you tune through 40m any time and don't hear signals, something is broken.
     
  7. WA4OTD

    WA4OTD XML Subscriber

    40M is one of the best overall bands, but 30M outperforms it consistently.

    I have most of my contacts, DX contacts and states on 40M.
     
  8. W9PSK

    W9PSK Ham Member

    40 has been pretty crappy lately, in my opinion. Lots of noise and really short skip. Still, I've managed to check into a few nets. I tried PSK on 30 and haven't had any luck. Could be my less than ideal antenna set up. If this hot weather would only let up for a couple of days, I could proceed with my next antenna project.
     
  9. NN3W

    NN3W Ham Member

    I pretty much agree with this. 40 during the day will normally get you up to 1000 miles. You can go further, but it takes power and good antennas.

    40 in the fall/winter will start going long as early as 2:00 pm local, and you can work east coast to Europe as early as then.

    40 at night and especially during the winter is a flat out amazing band with worldwide propagation.

    Honestly, it is my favorite band to operate on and its the band I have concentrated to optimize my station and antennas.
     
  10. K9STH

    K9STH Ham Member

    Especially during the cooler months, but sometimes during the warmer months, I can work Europe on 40 meters between 18 and 24 hours a day. This from the north side of Dallas, Texas. With Japan, during the cooler months, the JA stations often start coming in before midnight local time and I have still been working them after 1:00 PM local time on CW and almost noon on SSB. I do have the QSL cards to prove this!

    However, there are several factors which contribute to this. First of all, I have phased verticals on 40 meters which lower the angle of radiation. Next, I live 1/2 block from the highest point in the City of Richardson so it is basically "down hill" in any direction which, in turn, lowers the angle of radiation even more. Finally, the ground conductivity in my immediate area is among the best in the United States.

    Now for "close in" contacts even using just one of my verticals (I can separate them to use individually) doesn't work that well. I have to use a fairly low dipole for contacts out to between 700 and 1000 miles.

    Glen, K9STH
     
  11. K4KYV

    K4KYV Subscriber

    Radio Ethiopia is often audible here in the hinterlands as early as 1930 GMT on 7110. That's pretty good distance for early afternoon. I use it as a beacon for DX propagation. If Ethiopia is coming in with a weak signal, Europe can be counted on to come in better (excellently on the east coast), since ETH is 3 hours east of GMT.

    Their jamming transmitters certainly make a mess of things in the evening in N.A., from 0400 till fade-out around 0600.
     
  12. K8JD

    K8JD Ham Member

    I have experienced a kind of slump in the mid day hours but great signals on 40 in the mornings and afternoon hours. I work most of the eastern US and Canada from MI in the daylight \hours with up to 100 W on CW.
     
  13. AC0FP

    AC0FP Ham Member

    It looks like your correct, I turned the radio to 40 meters this morning and heard so many signals on my dipole I didn't know where to go first. I got called away for a hour and when I got back there wasn't a single signal heard on the band (noontime)! I'm going to have to get up earlier tomorrow!

    I see 10 meter band is open this afternoon with great signals between 4 land and 0 land! I could of made a lot more contacts but many of the stations were just looking for 10-10 numbers.

    73,

    fp
     
  14. G0GQK

    G0GQK Ham Member

    Well, 40 metres here in the UK has been lousy during the day, in the mornings there is very little activity in the digital portion and it doesn't cheer up until evening time. Same with 30 metres, 15 is dead all day, 17 slightly less than dead and and a summary is listed every day and has been for months, 10-12Poor 15-17 Poor and 20 Fair, it gets no better every day

    G0GQK
     
  15. KA4DPO

    KA4DPO Ham Member

    All I know is that over the 45 years that I have been listening and operating on the amateur bands 40 meters has been consistently the best for making contacts day or night. It changes from time to time but over the long haul it is the most reliable band (in my experience) for making HF contacts.
     
  16. NN3W

    NN3W Ham Member

    Well, why do you think the SW BCers were so reluctant to give up 40 meters??? :D:D
     
  17. W4PG

    W4PG Moderator Staff Member

    40 is one of the best overall bands we have! I don't much like it in the summer due to the extra static from all the thunderstorms, but during the winter months, it just flat our rocks!!

    Especially during solar minimums, the MUF at night can drop down to just about 7 mhz opening up conditions to worldwide contacts! I've been able to work Japan long path at 4 to 5PM in the afternoon before sunset! Simply amazing! The first time I ever heard JAs coming in long path during the afternoon, I thought I was hearing things!! :D

    Greyline propagation at sunset is perfect between Florida and JA land during the winter months.

    Is it winter yet?? :p
     
  18. WS2L

    WS2L Guest

    My main operating bands are 80 and 40 meters, sometimes I will venture onto 20 meters. During the day I usually listen to 7.255 and when a friend gives me a shout we move off to another frequency. Daytime propagation on 40 meters in NJ is great especially in the morning hours. I will be on 40 meters in the morning while doing some computer work. 80 meters is just to darn noisy during the day.
     
  19. K4KYV

    K4KYV Subscriber

    Kinda like the DX stations that only want to exchange QSL cards. If more DX operators were actually willing to talk to someone in a real conversation, I would attempt to work more DX. I have no interest whatever in QSL cards, even though I have some heavy card stock and a QSL card image stored in my computer, allowing me to produce a QSL card if I really need one.
     
  20. WA9CWX

    WA9CWX Ham Member

    Just got off 40 about 30 min ago, noon local, band was as bad as it gets, dead on CW, I did , however, work a W2 in NJ (from Wi) and gave him a 439 report, sigs are down, but generally all the comments previously made were right on target...40 is usually the best band to contact SOMEONE, SOMEWHERE, ANYTIME...:D

    Frank
     
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