Re: Topband: 160M Condx 29 Dec 2011

2011-12-30 Thread Ronald Raasch
Yes, superb condx. Called cq for abt 3hours, many RBN-spots from NA over  
30db.
15 NA in the log. Guess lot`s of folk have free from job.
kh2/n2nl works 60-70 EU in 1hour...LA is not KH2, but it may display  
something.

NA: little less conversation (on reflector) little more action! Remember  
it`s the faremost eastern stations who leave the warm bed.

HNY Ronald LA3ANA








Am 29.12.2011, 19:40 Uhr, schrieb Ray Benny rayn...@cableone.net:

 You guys are lucky. Two evening ago we worked EU, last night, nothing. A
 few of the big guns W6/7 were hearing EU, not me.

 Ray,
 N6VR

 Near Prescott, AZ

 On Thu, Dec 29, 2011 at 6:28 AM, Steve Sacco NN4X  
 n...@embarqmail.comwrote:

 I wandered into the shack overnight to discover excellent conditions
 into EU.

 The overall noise level was very low, and I was able to work LY, LA, SM,
 HA, G, F and PA with only 100 watts around their sunrise (between 05:57Z
 and 07:06Z).

 Interestingly everyone was about 559, and I received the similar reports
 in return.

 As previously noted, it's been a poor season for 160M; I'm glad I was
 able to get on the band for the first time last year, when the pickings
 were better.

 73 and HNY to all,

 Steve
 NN4X


 ___
 UR RST IS ... ... ..9 QSB QSB - hw? BK






-- 
Erstellt mit Operas revolutionärem E-Mail-Modul: http://www.opera.com/mail/
___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Topband: Another good LP day on Top

2011-12-30 Thread Jon Zaimes AA1K
The December Doldrums are officially over.

For the second day we had good long path/skewed path conditions in the 
pre-dawn hours.

This morning's excitement started with VK3IO (579) calling in at 1018z 
and VK3ZL (599!) at 1037z. Often when the VK's are this loud it's a sign 
the band will be poor to the tougher paths in Asia and the Pacific, so I 
didn't get my hopes up.

But then KH2/N2NL came through nicely on the direct path at 1100z.

And a few minutes later, Hiro, DU1/JJ5GMJ, showed up on 1811.5 and was 
being heard in New England. And I could copy him here in Delaware! DU 
has been a long, hard chase for me, having heard my first (a US station 
portable there) around 1980 when I was in Connecticut. I heard a few 
others over the years, including a 5-year pursuit of DU9/N0NM, who I 
heard many, many times with no QSO. And I've heard DU1IST both in our 
morning and LP in the evening the past two years.

But unlike some of the others, Hiro manages to hear stations quite well. 
And his 300 watts and inverted L put out a good signal. I was fortunate 
to get him in the log at 1110z (no. 314) and numerous others also had 
success. Thanks Hiro for your persistence!

About this time BU2AQ also started coming through, peaking due south 
though later shifting sometimes to SSW. I was copying him up till 1200z. 
No prize for me today but Allison did work several East Coast stations.

DU1IST also started CQ'ing, and while his signal was stronger than 
Hiro's, he has difficulty hearing and no QSO's were observed though he 
had many callers from the USA East Coast.

Peter, XU7ACY, has had a strong signal here on the long path the past 
two days, and he gave many a new one today.

Ross, 9M2AX, also was coming through again today but had some trouble 
with local thunderstorms there.

In other years with these long and skewed path openings, as sunrise 
approached the Asian signals often would shift around to the short path. 
But that hasn't happened this week.

73/Jon AA1K
Felton, Delaware
www.aa1k.us
___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: Another good LP day on Top

2011-12-30 Thread Bob Garrett
Congrats Jon on DU.  Still hopeful for Bu2AQ.  Exciting.  Man, was Peter
loud yesterday and very readable today too.  73 and HNY my friend.  Bob K3UL

___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: Another good LP day on Top

2011-12-30 Thread David Raymond
I knew the morning was going to be good when VK3ZL answered my CQ and was 
569. . .he was running 50w. 73. . .Dave, W0FLS

- Original Message - 
From: Jon Zaimes AA1K j...@verizon.net
To: topband@contesting.com
Sent: Friday, December 30, 2011 7:08 AM
Subject: Topband: Another good LP day on Top


 The December Doldrums are officially over.

 For the second day we had good long path/skewed path conditions in the
 pre-dawn hours.

 This morning's excitement started with VK3IO (579) calling in at 1018z
 and VK3ZL (599!) at 1037z. Often when the VK's are this loud it's a sign
 the band will be poor to the tougher paths in Asia and the Pacific, so I
 didn't get my hopes up.

 But then KH2/N2NL came through nicely on the direct path at 1100z.

 And a few minutes later, Hiro, DU1/JJ5GMJ, showed up on 1811.5 and was
 being heard in New England. And I could copy him here in Delaware! DU
 has been a long, hard chase for me, having heard my first (a US station
 portable there) around 1980 when I was in Connecticut. I heard a few
 others over the years, including a 5-year pursuit of DU9/N0NM, who I
 heard many, many times with no QSO. And I've heard DU1IST both in our
 morning and LP in the evening the past two years.

 But unlike some of the others, Hiro manages to hear stations quite well.
 And his 300 watts and inverted L put out a good signal. I was fortunate
 to get him in the log at 1110z (no. 314) and numerous others also had
 success. Thanks Hiro for your persistence!

 About this time BU2AQ also started coming through, peaking due south
 though later shifting sometimes to SSW. I was copying him up till 1200z.
 No prize for me today but Allison did work several East Coast stations.

 DU1IST also started CQ'ing, and while his signal was stronger than
 Hiro's, he has difficulty hearing and no QSO's were observed though he
 had many callers from the USA East Coast.

 Peter, XU7ACY, has had a strong signal here on the long path the past
 two days, and he gave many a new one today.

 Ross, 9M2AX, also was coming through again today but had some trouble
 with local thunderstorms there.

 In other years with these long and skewed path openings, as sunrise
 approached the Asian signals often would shift around to the short path.
 But that hasn't happened this week.

 73/Jon AA1K
 Felton, Delaware
 www.aa1k.us
 ___
 UR RST IS ... ... ..9 QSB QSB - hw? BK 

___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: 160M Condx 29 Dec 2011

2011-12-30 Thread Jim F.
Ha !  Ray,
 
From NH I heard EU stations but with a stealth condo endfed and K1 QRP rig
I may as well have been in W6 land :-)
 
However, hope springs eternal, 
and for some totally unexplainable reason, I made 
a (confirmed) contact with NH7O the other night
and am still on a tremendous high from that !
 
You never know...
 
73
 
jim  /  W1FMR  (NH)


--- On Thu, 12/29/11, Ray Benny rayn...@cableone.net wrote:


From: Ray Benny rayn...@cableone.net
Subject: Re: Topband: 160M Condx 29 Dec 2011
To: Steve Sacco NN4X n...@embarqmail.com
Cc: topband@contesting.com
Date: Thursday, December 29, 2011, 1:40 PM


You guys are lucky. Two evening ago we worked EU, last night, nothing. A
few of the big guns W6/7 were hearing EU, not me.

Ray,
N6VR

Near Prescott, AZ

On Thu, Dec 29, 2011 at 6:28 AM, Steve Sacco NN4X n...@embarqmail.comwrote:

 I wandered into the shack overnight to discover excellent conditions
 into EU.

 The overall noise level was very low, and I was able to work LY, LA, SM,
 HA, G, F and PA with only 100 watts around their sunrise (between 05:57Z
 and 07:06Z).

 Interestingly everyone was about 559, and I received the similar reports
 in return.

 As previously noted, it's been a poor season for 160M; I'm glad I was
 able to get on the band for the first time last year, when the pickings
 were better.

 73 and HNY to all,

 Steve
 NN4X


 ___
 UR RST IS ... ... ..9 QSB QSB - hw? BK




-- 
*Ray,*
*N6VR*
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: Galvanized Beverage antenna wire inquiry

2011-12-30 Thread ZR
Any series resistance or inductance will slow the incoming wave down and 
increase the tilt and the length where it reverses direction can be 
calculated since a 50% VF is the crossover point. A Beverage by definition 
is a slow wave antenna.

I use 2 types of military telephone wire for 5 reversible 2 wire Beverages. 
One is a copper/cadmium alloy and the other Im not sure but its the common 
WD-11A that many use. At 500-900' they seem to be no different than 
predicted.

I find 60dB nulls a bit of a stretch on a regular basis on any sky wave 
signal. Some here may have hit 40 on a fluke but 20-25dB seems average and 
with some a bit worse.

Carl
KM1H

- Original Message - 
From: Bruce k...@myfairpoint.net
To: topband@contesting.com
Sent: Thursday, December 29, 2011 6:23 PM
Subject: Topband: Galvanized Beverage antenna wire inquiry


 Early in 2007 I took a survey about Beverage antennas on this reflector.
 /archives//html/Topband/2007-02/msg00062.html

 Earl K6SE (sk)  was the one making exact termination test on his 7' above 
 the ground Beverages.  He was using AWG 17 galvanized steel electric fence 
 wire, the longest (1100 FT.) achieving 60 db front-to-back and 60-db 
 front-to-side. He replaced the galvanized wire with copper wire, but did 
 not achieve near the same results, so went back to galvanized.  In 
 additional emails, Earl  believed that it was the resistance of galvanized 
 wire, making unwanted signals travel twice the resistive distance.

 Has anyone else done Beverage wire comparisons, and what results?

 73
 Bruce-K1FZ
 ___
 UR RST IS ... ... ..9 QSB QSB - hw? BK


 -
 No virus found in this message.
 Checked by AVG - www.avg.com
 Version: 10.0.1416 / Virus Database: 2109/4110 - Release Date: 12/29/11
 

___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: RX antenna switch

2011-12-30 Thread Bill Cromwell
On Fri, 2011-12-30 at 15:15 +, Dave G4GED wrote:
 - Original Message - 
 Got a note from Gary K9AY, he says no time to make the RAS8x2 switches, real
 work is too busy. So I suspect until Gary can make more they are not
 available.
 Dave Anderson, K4SV
 --
 
 That's a pity, I was just about to order one!
 
 I haven't a clue of the methods of interlock switching the RAS8x2 uses but
 as it looks like we're going to have to make our own and my need to keep to
 simple click-clunk technology. I believe that using relays with a spare 
 contact in such a cicuit that disables any other relay once operated, would 
 do the job?
 
 Before I set about reinventing the wheel, does anyone have the knowledge or
 a basic circuit diagram for this sort of relay interlocking please?
 Tnx Dave
 
 ___
 UR RST IS ... ... ..9 QSB QSB - hw? BK

Please reply with directions to Dave's query on the list or.. include me
if the reply is off-list. I am facing some of the same issues. Maybe I
could sort it out for myself but why reinvent the wheel?

73,

Bill  KU8H

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UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: Another good LP day on Top

2011-12-30 Thread W1ZC

Yes, Quite a morning on 160! I heard XU7ACY via LP (on 213? Beverage) here
in SNH for the 1st time. I called him a few times but no QSO. Gone at my
exact sunrise. Quite a thrill just the same.

Cheers,   Dick, W1ZC


___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Topband: Fwd: 160M JT65HF

2011-12-30 Thread Tree
Let me applaud David for his post.  This in informative - relevant to
160 meters and does not get into the emotional area that I was trying
to nip in the bud with my previous post.  It should be noted that
some people took offense at my position and even at least one
unsubscribed from this list because he perceived we were not
interesting in talking about 21st century modes.  I think they
misunderstood my request.

There is a difference between messages like the one below and the ones
I was trying to prevent a flood of.  We are here to exchange technical
information and encourage activity.  We are not here to convert
everyone to our own view on the relative value of different ways of
operating.  While this message isn't for everyone - it falls into the
same category as a message that might be specific to phased beverages
- which is of little interest to someone on a city lot.  Use the
delete key.

Happy New Year to all topband operators.

Tree N6TR

piss: If you have not already - now is a perfect time to send in your
Stew Perry log!!!  thanks.


-- Forwarded message --
From: David Michael Gaytko // WD4KPD wd4...@suddenlink.net
Date: Fri, Dec 30, 2011 at 8:22 AM
Subject: Topband: 160M JT65HF
To: topband@contesting.com


almost every night and especially on weekends/holidays, there is alot of
activity on 1838/usb. some qrm from psk/other but they usually are far
enough from the center freq not to be a problem (not always, the jt
program only shows +/-1kc on the waterfall. do wish they would give at
least .500kc guard band)

there is a little activity down around 1810 where the jt65hf got
started, but since ARRL proposes that area for cw, 99% of activity is on
the 1838kc freq.

here in NC with a hytower vert, i have 47 for WAS and EU shows up well
late in eve.  80m is quite similar, but much better to EU in the eve (48
for WAS), and some Grey Line.

come on down and enjoy !

david/wd4kpd

psany grey-line dx skeds welcome on 80/160.  really need AK/HI


--
God's law is set in stone...everything else is negotiable.
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: 160M Condx 29 Dec 2011

2011-12-30 Thread Mark Lunday
Ditto here, only LY7M and that was not strong at all.  Been quiet this
season.  I could just barely hear the V5/DJ DXpedition, but no way I was
getting through that pileup.

Mark Lunday, WD4ELG


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UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: RX antenna switch

2011-12-30 Thread K9AY
Topbanders,

Re: the recent discussion of antenna switches and the AY Technologies 
RAS-8x2 -- yes, production has been suspended while I work on my real job 
which now involves starting a new company (www.rfti.com for those who might 
be interested).

I have only today started a conversation with a ham supplier who might 
continue the RAS-8x2 and perhaps other products I haven't made for a while. 
Even if that works out, there will be startup time -- hopefully, I can set 
aside time in February to work on a final batch of RAS units. No promises, 
but I'll try...

Final note -- I have been providing repair services for the AYL-4 K9AY Loop 
systems made prior to Array Solutions taking over its manufacture. I will do 
the same for RAS-8x2 units already in the field.

73 and Happy New Year to all!

Gary
K9AY

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UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: 160M JT65HF

2011-12-30 Thread Joe Subich, W4TV

On 12/30/2011 11:22 AM, David Michael Gaytko // WD4KPD wrote:
 almost every night and especially on weekends/holidays, there is alot
 of activity on 1838/usb. some qrm from psk/other but they usually are
 far enough from the center freq not to be a problem (not always, the
 jt program only shows +/-1kc on the waterfall. do wish they would
 give at least .500kc guard band)

A technical clarification ... although JT65 users will specify USB
carrier (dial) frequency, the software uses a nominal 1270.5 Hz sync
tone with activity spreading +/- 1 KHz.  The actual occupied spectrum
would be approximately 1838.270 to 1840.500 KHz.

Most JT65 activity is relatively low power - typically between 10 and
50 watts on HF.

73,

... Joe, W4TV

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UR RST IS ... ... ..9 QSB QSB - hw? BK


Topband: LONG PATH DX YESTERDAY

2011-12-30 Thread Bill and Liz McHugh
While many were hearing XU7ACY via long path yesterday morning, I heard 
stations to the west and south working JAs which I could not hear.  I'd be 
interested in knowing if they too were worked via long path or direct.

I listened both ways and while XU7 had a very copyable signal here, there was 
no sign of those JAs, 9M2 or DU1.  Sadly, no QSO!

I found my Beverages and K9AY loop not very good on the long path but had 
decent copy on the phased verticals working against the horizontal loop.

XU7 was very poor copy this AMhope conditions get betterlike many I 
need that one!

Bill VE3CSK
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UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: RX antenna switch

2011-12-30 Thread Joe Subich, W4TV

Interlocked switches should not be necessary for receive applications.
If by interlocked you're looking for a way to deselect one antenna
when selecting the next, check K1TTT's web site.  Dave had a push
button controller that would release previously selected antennas
when making a new selection.  I haven't looked for it recently so you
may need to do some digging.

73,

... Joe, W4TV


On 12/30/2011 3:27 PM, Dave G4GED wrote:
 - Original Message -
 From: Brian Moranbria...@yahoo.com
 Here's one that works for TX  Rx.
 http://www.qsl.net/k5lxp/projects/CoaxSwitch/CoaxSwitch.html With lockout,
 etc. A homebrew version of the '6 pack' kind of box from array solutions. I
 have the Array Solutions one, and it works great.
 - Brian N9ADG
 

 Thanks Brian for the submission which I'm sure admirably suits selection of
 TX/RX  antennas perhaps for selection of different bands etc.
 If I've read it correctly, the antennas are selected by rotary switches.
 The primary need for selection of RX antennas on TopBand is to be able to
 switch from any one to any other instantly without the tedium and confusion
 of having to spin a rotary switch back and forth whilst trying to find best
 copy out of an extreemly weak signal down in the noise.
 A matrix of quiet interlocked push button switches would be ideal, which
 require just one push to instantly change from any one antenna to any other.
 Unfortunately, they're not easy to come by these days which is why I'm
 thinking of a relay based solution. There's undoubtably software solutions
 available to do this but I'm afraid that's out of my league, unless someone
 here can pull a design out ready made for DIY!
 Cheers Dave

 ___
 UR RST IS ... ... ..9 QSB QSB - hw? BK

___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: 160M JT65HF

2011-12-30 Thread Jim Brown
On 12/30/2011 9:14 AM, Joe Subich, W4TV wrote:
 Most JT65 activity is relatively low power - typically between 10 and
 50 watts on HF.

Yes, but if I were trying to work a difficult path like EU on 160M from 
here in W6, I would be running as much power as I thought my power amp 
could safely handle for the 50 second keydown cycle -- (probably about 
500W).

Thor's very informative post about the far more limited spectrum on 160M 
in his country was also quite helpful, and it helped a lot in 
understanding his concerns. This is the sort of information that I'd 
love to see collected for ALL countries on a website.  I'd be happy to 
post it on mine if someone were to collect it.

73, Jim K9YC
___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: 160M JT65HF

2011-12-30 Thread Joe Subich, W4TV

 Thor's very informative post about the far more limited spectrum on
 160M in his country was also quite helpful, and it helped a lot in
 understanding his concerns. This is the sort of information that I'd
 love to see collected for ALL countries on a website. I'd be happy
 to post it on mine if someone were to collect it.

Dennis N0CKD/N4CKD used to maintain such a list ...  I don't know
if it is still available.  EI8IC also has a similar list at:
http://www.mapability.com/ei8ic/contest/topband.php but it appears
to have not been updated over the entire last sunspot cycle ...
K8ND also has a list here (dated 9 September 2010):
http://www.k8nd.com/Radio/Planning/CQWW160/160FrequencyAllocation.pdf

73,

... Joe, W4TV


On 12/30/2011 4:14 PM, Jim Brown wrote:
 On 12/30/2011 9:14 AM, Joe Subich, W4TV wrote:
 Most JT65 activity is relatively low power - typically between 10 and
 50 watts on HF.

 Yes, but if I were trying to work a difficult path like EU on 160M from
 here in W6, I would be running as much power as I thought my power amp
 could safely handle for the 50 second keydown cycle -- (probably about
 500W).

 Thor's very informative post about the far more limited spectrum on 160M
 in his country was also quite helpful, and it helped a lot in
 understanding his concerns. This is the sort of information that I'd
 love to see collected for ALL countries on a website.  I'd be happy to
 post it on mine if someone were to collect it.

 73, Jim K9YC
 ___
 UR RST IS ... ... ..9 QSB QSB - hw? BK

___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: 160M JT65HF

2011-12-30 Thread Rik van Riel
On 12/30/2011 04:14 PM, Jim Brown wrote:
 On 12/30/2011 9:14 AM, Joe Subich, W4TV wrote:
 Most JT65 activity is relatively low power - typically between 10 and
 50 watts on HF.

 Yes, but if I were trying to work a difficult path like EU on 160M from
 here in W6, I would be running as much power as I thought my power amp
 could safely handle for the 50 second keydown cycle -- (probably about
 500W).

 Thor's very informative post about the far more limited spectrum on 160M
 in his country was also quite helpful, and it helped a lot in
 understanding his concerns.

Agreed.

I believe it would be a polite thing for all the digital ops
to happen around 1838, so as to not cause interference to the
CW ops lower in the band.

-- 
All rights reversed.
___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: RX antenna switch

2011-12-30 Thread Eric Tichansky NO3M
System similar to what you mentioned regarding the gain 
compensation/distribution, HPF/BPFs, RX overload, PTT, and 
additional signal path sources and output routing (incl. looping 
back): http://no3m.net/index.php?page=signal-processor

Has an on-board embedded MPU, but a header can be used w/ 
switches for manual control.

73/HNY - Eric NO3M

 If it were the 'ideal' thing, there'd be a box with a matrix of switches (A x 
 B), gain blocks that could be put in/out of the circuit, BPFs that could be 
 put in and out, 'muting' of any RX output that is connected to a transmitter 
 that is transmitting, RX overload protection, and some general purpose inputs 
 to select the 'configuration'. Probably a PIC to run it, with a nice GUI app 
 to configure it.  


 - Brian N9ADG


___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Topband: Teflon Tubing

2011-12-30 Thread Price Smith
If anyone is in need of Teflon Tubing, I have some in #11 and #12 size. That
is the inside diameter. 

 

If someone needs some, I will give you a good bargain. 5 feet for US$10.00
post- paid and US$14.00 

post-paid for DX.

 

Please contact me at   w0ri...@sbcglobal.net   for the details.

 

73 W0RI   Price

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UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: BAD OT:Phase noise *** RE: digital on 1838 +/-

2011-12-30 Thread Jeff Blaine
Phase noise is generated by the rig's LO and exists as a more broad band low 
level signal.  Issue is more significant with modern day DDS than with older 
analog-type VFO sources.  Guys who operate field day can relate...

73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie

-Original Message- 
From: MIKE DURKIN
Sent: Friday, December 30, 2011 11:08 PM
To: topband@contesting.com
Subject: Topband: BAD OT:Phase noise *** RE: digital on 1838 +/-

Don't you mean IMD from the radio/amp driven past ALC?

CW is a binary signal and no one complains of its phase noise .

Mike KC7NOA

 From: n...@comcast.net
 To: wa3...@comcast.net; topband@contesting.com
 Date: Fri, 30 Dec 2011 22:59:09 -0500
 Subject: Re: Topband: digital on 1838 +/-



 -Original Message-
 From: topband-boun...@contesting.com 
 [mailto:topband-boun...@contesting.com] On Behalf Of wa3...@comcast.net
 Sent: Friday, December 30, 2011 10:47 PM
 To: topband@contesting.com
 Subject: Re: Topband: digital on 1838 +/-


 Jim

 Consider this however, CW and digital modes like JT65 typically share 
 the CW portion of the bands.

 That is not the case on weak signal bands, and in special 6m, digital 
 modes are above 50.250 MHz, there is a clear reason for that, digital is 
 not a narrow mode, there are phase noises that  can trash the band.


 Regards
 Jose Carlos
 N4IS


 ___
 UR RST IS ... ... ..9 QSB QSB - hw? BK

___
UR RST IS ... ... ..9 QSB QSB - hw? BK 

___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: BAD OT:Phase noise *** RE: digital on 1838 +/-

2011-12-30 Thread Greg - ZL3IX
Jeff, I suspect that you mean modern day synthesisers rather than 
specifically DDS.  Actually, the DDS itself has quite low phase noise, 
better than -130 dBc/Hz with Analog Devices chips,  especially if the 
internal multiplying PLL is not used in the reference path.

73, Greg. ZL3IX

On 2011-12-31 06:30 p.m., Jeff Blaine wrote:
 Phase noise is generated by the rig's LO and exists as a more broad band low
 level signal.  Issue is more significant with modern day DDS than with older
 analog-type VFO sources.  Guys who operate field day can relate...

 73/jeff/ac0c
 www.ac0c.com
 alpha-charlie-zero-charlie

___
UR RST IS ... ... ..9 QSB QSB - hw? BK


Re: Topband: BAD OT:Phase noise *** RE: digital on 1838 +/-

2011-12-30 Thread Jeff Blaine
Greg,

Yes, that's correct.  Thanks for the fix.  Been a long week.

73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie

-Original Message- 
From: Greg - ZL3IX
Sent: Saturday, December 31, 2011 1:29 AM
To: topband@contesting.com
Subject: Re: Topband: BAD OT:Phase noise *** RE: digital on 1838 +/-

Jeff, I suspect that you mean modern day synthesisers rather than
specifically DDS.  Actually, the DDS itself has quite low phase noise,
better than -130 dBc/Hz with Analog Devices chips,  especially if the
internal multiplying PLL is not used in the reference path.

73, Greg. ZL3IX

On 2011-12-31 06:30 p.m., Jeff Blaine wrote:
 Phase noise is generated by the rig's LO and exists as a more broad band 
 low
 level signal.  Issue is more significant with modern day DDS than with 
 older
 analog-type VFO sources.  Guys who operate field day can relate...

 73/jeff/ac0c
 www.ac0c.com
 alpha-charlie-zero-charlie

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UR RST IS ... ... ..9 QSB QSB - hw? BK 

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UR RST IS ... ... ..9 QSB QSB - hw? BK