Re: Topband: FT8 on 160m

http://www.iaru-r1.org/index.php/downloads/func-startdown/718/   IARU Region 1 160m Band plan: 1810 - 1838 200 CW,1836 kHz – QRP Centre of Activity 1838 - 1840 500 Narrow band modes 1840 - 1843 2700 All modes – digimodes, (*) 1843 - 2000 2700 All modes, (*) There's no exclusive frequency for FT8

Re: Topband: CQ WW CW 160m observations

Sorry Ray I guess my RX loop just didn't hear you, I will put up something aimed towards NA for CQ160 73 Trevor EI2GLB - Original Message - From: rayn6vr To: MR TREVOR DUNNE , Ian Fugler Cc: Topband@contesting.com Sent: Mon, 27

Topband: Fwd: Announcing Edition #22- The Stew Perry TopBand DX Challenge

Greetings Nocturnal Raucous Radio Frequency Flingers, The Boring Amateur Radio Club urges you to set aside Dec. 30/31 for a pleasant get together with several hundred of your best 160M friends during The Stew Perry TopBand Challenge. So you won't embarrass yourself, go now and read the rules

Re: Topband: CQ WW CW 160m observations

East Coast of Australia was smashed by thunderstorms all weekend, and I disconnected my antennas. My usual experience of Top Band on contest weekends, is that it just becomes very difficult to work any DX. Luke VK3HJ _ Topband Reflector Archives -

Re: Topband: FT8 on 160m

My WSTJ waterfall shows about 50Hz bandwidth for ft8 signals. In "band plan" theory the ft8 segment is 1840 to 1842.5. However, many rigs won't pass audio much below 300Hz and may not above 2.5KHz. I run "wide open" DSP on my Pro3 so see to 3Khz. Above 2.6Khz there are few ft8 signals to

Re: Topband: CQ WW CW 160m observations

 Very poor from Colorado.  80 and 40 were not what I would call great either.  I did snag 9m6 for a new on on 80 well after my SR on Sunday.  I woke up early and thought I would have great fun on the lowbands.  I mostly got cqed in my face by BY's on 40 and the UP0L and the HS stations.   Next

Re: Topband: FT8 on 160m

The normal bandwidth for FT8 is 2.5 to 2.8 kc.  at 1.842.9 you should have been outside the FT8 band.  Hardly anyone operates above 2.5 it seems anyway.  I think you  were essentially being trolled.  I suppose you could have been pretty wide for a local or close in station wiping out a fair

Re: Topband: Beverage construction

Exactly! Doing that creates impedance mismatches at each end. Now, if your aim is to trip people or animals, slope it. ;-) 73, Mike www.w0btu.com On Nov 27, 2017 4:55 PM, "Donald Chester" wrote: > did you slope the last 50' on each end? Sloping the ends of a beverage

Re: Topband: Beverage construction

Thu Nov 23 13:42:27 EST 2017 Dave k4em at bellsouth.net wrote: > did you slope the last 50' on each end? Sloping the ends of a beverage serves no useful purpose. That's an old wives' tale (or maybe I should say old Hammy Hambone's tale) started by W1WCR, I believe. Whether the wire is

Re: Topband: CQ WW CW 160m observations

Trevor,I called u for almost 20 minutes  my Saturday evening just before ur SR. U peaked 459 at times but u never hear me or some of the other Ws calling.Hoping for better condx.Ray, N6VR Near Prescott, AZ Sent from my Verizon, Samsung Galaxy smartphone Original message From:

Re: Topband: FT8 on 160m

As a practical matter there are several 2 kHZ segments of each band that are now devoted to 24x7 JT65, FT8, and other digital modes. Weak signal CW work - eg working rare mults or even just weak guys from common mults - in those segments just isn’t gonna happen. Substantial parts of 80M and

Topband: FT8 on 160m

As we all know, CQWW produces huge activity on all HF bands. This year I was hearing stations up to well above 1850kHz. I have found that trying to run Europe is often more productive in the 1840-1850 segment, presumably because it is less crowded than lower in frequency. Late in the contest

Re: Topband: 160m magnetic loop

Hi Roger, No, I have not seen it, but will take a look. I am eager to get this up and see what it does, especially with that proposed 890Hecta solar farm going up just a few miles away, its going to generate a lot more noise for all concerned. My loft is full on junk, so will probably have to

Re: Topband: CQ WW CW 160m observations

I did not long stay on 160m as conditions did not seem very good. Heard JA3YBK on saturday evening, but heavy pile up. Worked some zone 5 and 4and some Caribbean. I just had my inv L up on Friday. It has 2 radials. All temporary setup till the rework of the garden is finished. K9AY loop is

Re: Topband: CQ WW CW 160m observations

Thanks for the report Ian you did very well, me not being able to run is a big reason why I missed lots I really need to improve my CW, 73 Trevor EI2GLB - Original Message - From: Ian Fugler To: g...@ka1j.com, Topband@contesting.com Sent: Mon, 27 Nov 2017 14:55:29

Topband: CQ WW CW 160m observations

Trevor,. I was calling and calling many EU stations and they would uniformly come back calling CQ right in my face both evenings. I was running 1500 watts into a vertical with 125 radials. I seemed to hear just fine, but no one across the pond could hear me. I quit in disgust on Friday

Re: Topband: CQ WW CW 160m observations

I worked G4IIY at about 03Z on Sunday morning. Ian was one of the most consistent signals CQing and heard from my end (nice job Ian). However - no one from EU was strong. A few of the Carib and Zone 33 stations were strong some of the time but even then not frequently. I worked EI9E around

Re: Topband: BOG pre amp info ?

Hello Tim and all. The input impedance of the W7IUV amp is also highly dependent on the negative feedback found by looking at the unbypassed base bias circuit. And highly dependent on the size of the unbypassed emitter degeneration resistance. There is a thorough discussion of this by

Re: Topband: BOG pre amp info ?

Hi Tim, K8ZOA's file are available here https://www.okdxf.eu/index.php/technika 73 Jan OM2XW Technika - okdxf.eu www.okdxf.eu Zvláštní přijímací anténa (Beverage, SALA, Pennant, Flag apod.) je nutností při práci na pásmech 160, 80 a často i 40 m.

Re: Topband: BOG pre amp info ?

Input impedance on the W7IUV preamp is determined almost entirely by the DC bias currents. Clifton Labs used to have a really nifty set of pages on modeling and measurement of the various high performance preamps. I really miss that site. Tim N3QE On Mon, Nov 27, 2017 at 9:46 AM, Roger Kennedy

Re: Topband: CQ WW CW 160m observations

Trevor I worked 123 US stations on topband over the weekend, including Gary KA1J (thanks!) and a couple in Zone 3. However, I think conditions were not great and it seemed on several occasions that the US stations were hearing EU better than we could hear them. Some of the RBN reports from

Topband: CQ WW CW 160m observations

Trevor I popped on a few times on 160 over the contest weekend . . . but agree, conditions were rather poor . . . I worked pretty much the same NA stations as you. I actually heard quite a few more US stations, but it was when they were calling other Europeans (who often didn't hear them) . . .

Topband: BOG pre amp info ?

Hi Don Gosh, really? Looking at the circuit, and given the resistors used, I would have thought the input impedance would be about 800 ohms . . . And hard to estimate the output impedance, but wouldn't have thought it was about 50 ohms. Guess I'm wrong then ! Sorry about that. (I already

Re: Topband: CQ WW CW 160m observations

Hi Trevor, I'm in Connecticut. I didn't compete much, I was too busy otherwise this weekend. I ran full power to give out some Q's on 160. I heard many more EU than I could get to hear me. Some stations I called maybe 20 times and they either didn't reply to me or went to another call.

Re: Topband: CQ WW CW 160m observations

I found conditions very poor and even on 80 no EU heard at my station in San Jose, California. Bob AA6VB Sent from my iPhone On Nov 27, 2017, at 5:57 AM, MR TREVOR DUNNE > wrote: Hi All First time to give 160 a good go during CQ WW and I was

Topband: CQ WW CW 160m observations

Hi All First time to give 160 a good go during CQ WW and I was surprised how few NA stations I heard, I feel I was active at the right time 03-08utc but apart from VO1HP K3LR and W3LPL I don't think I worked a half a dozen more, worked some Caribbean stations as well I don't have a contest

Re: Topband: BOG pre amp info ?

HI Roger, You said "However, the circuit seems odd . . . I used transformers in and out on my Loop Preamp, to give a match to 50 ohms." I believe your above statement was in reference to the W7IUV preamp. I've measured the W7IUV preamp input and output impedances and also modeled the W7IUV

Topband: BOG pre amp info ?

That's a nice cheap board, and worth using considering it has relay switching too . . . However, the circuit seems odd . . . I used transformers in and out on my Loop Preamp, to give a match to 50 ohms. Roger G3YRO ---

Topband: 160m magnetic loop for receive

I meant to add that as well as having a better signal/noise ratio than my main antenna, it's particularly useful in a Contest, like this weekend's CQWW. It makes it easier to pick out the DX signals between the strong Europeans . . . on the Loop the EU stations are weaker, but the DX stations

Topband: 160m magnetic loop for receive

Hi John I built a 6ft diameter 4-turn 160m receiving loop a few weeks ago - did you see my write-up on qrz.com? It's installed up in my loft, pointing E-W, and is varicap tuned (sending DC down the coax) It works really well on DX - I've worked about 100 North and South American stations using