Hi,
I continue to find evidence that 160 meters is NOT closed for the
season. Most of the evidence is to be found way up in the phone band. I
wondered if those guys were running California kilowatts or something
but in some of the QSOs they mentioned their power output in the 100
watt area.
YW5X (IOTA activation in Venezuela) has been active on 160M CW past couple of
nights with a fair number of callers.
Tim N3QE
From: Topband [topband-boun...@contesting.com] on behalf of Bill Cromwell
[wrcromw...@gmail.com]
Sent: Sunday, August 25, 2013
The J-310s in my little preamp are kaput - I looked at Mouser but the shipping
costs are way too high for a couple of little Jfets - any body have lots of
extra J-310 (or equivalent) they could spare? What ever your costs would be,
including mailing them off, would be far cheaper than what it
Oooops - forgot to mention quantity --- four would be nice (in case they go
south again) Jim R.
The J-310s in my little preamp are kaput - I looked at Mouser but the shipping
costs are way too high for a couple of little Jfets - any body have lots of
extra J-310 (or equivalent) they
On 08/25/2013 09:15 AM, Shoppa, Tim wrote:
YW5X (IOTA activation in Venezuela) has been active on 160M CW past couple of
nights with a fair number of callers.
Tim N3QE
Hi Tim,
Maybe I should be listening more at night instead of mornings...
73,
Bill - I was on this morning, listening for the YW5X station and calling CQ
periodically - worked two west coast stns...W7IZ and K7CF (received a 599+ 10
from K7CF and 599 from W7IZ) but didn't hear a peep east of me. I could JUST
make out VK3ZL on 1824 or so but Bob was just above ESP levels
This morning I set up a receiver to slowly scan (troll) from 1800 to
1830 kc...continuously. While I am working around here in and out of the
shack I will hopefully hear anybody in range if there is activity.
Bill KU8H
Working some Europeans in August 2013 about my bedtime.
All on CW
Okee Dokede - someone offered to send me four - he said he has thousands of
those J-310sthanks to all that replied with info!
Jim R.
From: rodenkirch_...@msn.com
To: topband@contesting.com
Subject: Anyone have a boat load of J-310s?
Date: Sun, 25 Aug 2013 07:16:31 -0600
The
What's taking out the J-310s, Jim? I have some around here somewhere, but
it's been years since I've seen them. Did you try Digi-Key?
Do you need to modify your preamp a bit to better protect the J-310s?
73,
Charlie, K4OTV
-Original Message-
From: Topband
That's great, Jim!! Sounds like it's working well!! Have fun! I'm sure you
will like it!
73,
Charlie, K4OTV
From: James Rodenkirch [mailto:rodenkirch_...@msn.com]
Sent: Sunday, August 25, 2013 9:53 AM
To: Charlie Cunningham
Subject: RE: Topband: Two 2:1 transformers to choose from!!
A couple weeks ago I declared my intention to be back on making some
feeble noises in a few days. Unfortunately that hasn't happened. At
this point I have no idea when I will be QRV, as I just don't have
enough time or energy to get the station set up and repair finished.
73,
Paul N1BUG
160 is really picking up here.
I called CQ on 1824.5 this morning here in Atlanta at 1030 Z. VK3ZL came
back to me with a 599 report and I gave him an honest 579. The band has
been open for some time at this QTH. However, the RX antenna is the Hi-Z
4-8 PRO, 8 vertical array (with 4
My forthcoming 160m vertical requires about a 700 ft run of coax. I'd like
to bury the coax over most of the run, but some of it will be elevated, with
high UV exposure. (I'm at 7000 ft elevation and sun shines 330 days/yr.) The
climate is very arid here (about 4-6 in rain/yr), so water ingress
Jim,
Davis RF BuryFlex is the way to go. It has a PE jacket, a stranded copper
center conductor, it's direct burial (just as the name implies), and it
handles direct sunlight exposure very well.
I have been using it for 15 years, and it all came from the same roll I
bought from The Wireman at
On 08/25/2013 12:35 PM, Bruce wrote:
Working some Europeans in August 2013 about my bedtime.
All on CW
G3JMJ very active many mornings 0346-0352 UTC 1.825 MHZ
IV3PRK often active worked 0358 UTC 1.831 MHZ
SV3RF 0353 1.818 MHZ G4EIM 0414 active many mornings 1.830 MHZ
I2ZFD 0400 1.830
If one needs J-310 FETs. Look on eBay there are quite a few listings with
reasonable
shipping cost.
73 de Price W0RI
_
Topband Reflector
Jim,
If you really have trouble getting some J-310s, let me know. I'd really
have to hunt -probably out in my garage. The J-310s that I have, if I could
find them, are, I expect, at least 20 years old and pre-date the shenanigans
that Paul is warning you about. The ones that I had, are, as I
As far as am aware On-Semi still make the TO-92 J310. Fairchild ceased
production about 2 years back. I did a last time buy from Mouser for several
thousand J310 and the much more linear J309.
73
Andrew Ikin G8LUG
_
Topband Reflector
Ever since I added back-to-back 1N4148's between the preamp's input and
ground many years ago, I have never lost a transistor in my preamp. Before
that, it seemed that I was replacing it after nearly every thunderstorm.
A couple of years ago I changed it a little: I added a small incandescent
That's always worked for me, Mike! The bit of resistance that I suggested
that Jim add ahead of the FET gate and the diodes serves the same purpose as
your incandescent lamp - but I expect that the lamp is more rugged and
forgiving.
73,
Charlie, K4OTV
-Original Message-
From: Topband
Got it, Mike and Charlie - will do something like that - reverse diodes across
the input, if nuthin' else!
From: charlie-cunning...@nc.rr.com
To: mikew...@gmail.com; rodenkirch_...@msn.com; topband@contesting.com
Date: Sun, 25 Aug 2013 16:21:05 -0400
Subject: Re: Topband: Two 2:1
I've found what I'll need, Charlie, courtesy of Andy Ikin! Thanks to all for
the assistance on this project! 72, Jim Rodenkirch K9JWV
From: charlie-cunning...@nc.rr.com
To: w...@arrl.net; rodenkirch_...@msn.com; topband@contesting.com
Date: Sun, 25 Aug 2013 15:55:21 -0400
Subject: Re:
Actually, Jim - for 160 and 80m, where you could tolerate some capacitance,
you could even try back-to-back 1 amp rectifiers, like IN4004-1N4007. You
surely wouldn't blow those out! :-) I'd probably start with the 1N4148,
though.
73,
Charlie, K4OTV
-Original Message-
From: Topband
Thirty years ago I used 6DJ8 (E88CC) to solve a third order IMD problem with
tuned loop that was using J310s.
The IMD was caused by Radio Free Europe on 13m.
73
Andrew
- Original Message -
From: Charlie Cunningham charlie-cunning...@nc.rr.com
To: 'Andy Ikin'
Yes, we could swing the grids of those tubes quite a ways before
encountering enough non-linearity to produce a significant amount of
intermod, Andy! The old original AMECO tunable vacuum -tube preamp, that I
borrowed from Bill, K4CIA, worked really well with my KAZ terminated RX loop
for the low
Charlie,
When I was poor man 40 years ago, I always wanted Tektronix 545B Scope,
which I couldn't afford. So I built a Chinese Copy with discarded parts
from the Calibration department of the computer company I worked for. The
scope use many 6DJ8s. I did get it working after about a year;
Gee, that's really interesting, Andy! I also built a much simpler
oscilloscope when I was a teenager and new ham! Yours was a really elaborate
and impressive 'scope project! Congrats!
Glad to hear from someone who has experience with the KAZ and flag antennas.
My KAZ was for 160 and terminated
On 08/25/2013 06:31 PM, Andy Ikin wrote:
Charlie,
When I was poor man 40 years ago, I always wanted Tektronix 545B
Scope, which I couldn't afford. So I built a Chinese Copy with
discarded parts from the Calibration department of the computer
company I worked for. The scope use many 6DJ8s. I
Well I applaud your making the effort at giving an honest report. It seems to
me that 599 is reported far too casually these days and I certainly attempt to
give honest reports even in a (non contest) pile up. Although R reports are
fairly easy - I give 3 if I'm struggling, 4 if I have to pay
On 8/25/2013 6:29 PM, Charlie Cunningham wrote:
Gee, that's really interesting, Andy! I also built a much simpler
oscilloscope when I was a teenager and new ham! Yours was a really elaborate
and impressive 'scope project! Congrats!
Glad to hear from someone who has experience with the KAZ and
There is an official S meter scale based on microvolts at the antenna jack,
50uV is S9. Objective S meter reading? When band noise is S9+20 on my transmit
antenna, a true S9 signal wouldn't even be copied.
Of course on my RX antenna band noise is S1 and a strong EU signal is S5 to S6
for real
On 08/25/2013 07:44 PM, Bob Kupps wrote:
Well I applaud your making the effort at giving an honest report. It seems to me that
599 is reported far too casually these days and I certainly attempt to give honest
reports even in a (non contest) pile up. Although R reports are fairly easy - I give
Dans small parts them at 3 for 1.50.
_
Topband Reflector
A buddy of mine has a 100’ 25G tower and wants to run it on both 160/80. I’m
thinking a par of shunts will work for that?
If you have done this, I would be interested in your comments on the general
implementation.
Thanks!
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
Bill,
The stations on the RBN are automatic, and work even when unattended. They
are not like the DX clusters which require a manual post. Call CQ and see.
:-)
73, Mike
www.w0btu.com
On Sun, Aug 25, 2013 at 10:16 PM, Bill Cromwell wrcromw...@gmail.comwrote:
The next thing for me to do is
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