Ri ck, I`ve built both. I`ve compared them side by side and the slimjim
wins. I could hear and get into repeaters with the slimjim that I could
not with the jpole. Plus it matches much easier and is easier to build
than the jpole. I always used the 450 ladderline to build the slim jim.
The tv
I haven't been following this thread until now, but are you building these
antennas for portability or are you using them in a base configuration?
I've found 300-ohm twinlead to be the best as far as portability and ease of
construction. I live in the Portland Oregon area and haven't seen any
I am in charge of the digital system for our club's winter field day
later this month. I have a fair amount of experience with BPSK-31 and
Olivia on 40 meters. Of course, that works nicely in late afternoon
and early evening, but I need to know what/where/what frequency to use
during the DAY, as
I've never heard of a Winter Field Day. Is this ARRL sanctioned, or is it
something local to your club?
Would be interesting!
Rod
KC7CJO
--- On Thu, 1/8/09, deadgoose38 deadgo...@comcast.net wrote:
From: deadgoose38 deadgo...@comcast.net
Subject: [digitalradio] Winter field day advice
To:
I did a quick test only yesterday night at my FT-450 and here are the
results:
500 Hz40 W
1000 Hz40-50 W
1500 Hz40 W
2000 Hz40 - 50 W
2500 Hz20 W
There is not at all such a big difference for the different tones even
though it's for sure not a very even passband for the
Juergen,
Thanks for doing the test.
Now I am confused because I contacted Yaesu and sent them this graph of
my measured transmit passband:
http://www.projectsandparts.com/misc/ft-450tx.gif
And this is what the engineer told me:
Your graph shows the typical audio roll off expected. The bass
J-Poles, or for that matter, SlimJims, could be built for either
portable or fixed operation from 450 ohm slotted twin lead. I have a
fixed home J-Pole constructed from 450 ohm window line and sealed in
PVC. Because the velocity factor is significantly slowed down by the
PVC, you have adjust
It's hard to believe that the engineer has looked at the scale ... If
such a characteristic would be standard I would not recommend the
YAESU FT-450 to be used for medium or wider digital modes like Olivia etc.
I remember that first tests of the FT-450 complained about poor tx
audio performance,
Thanks! Antennas are a science all on their own and I LOVE to mess with them.
Any information I can get on them helps!
I like to hear how others fix/modify/build their antennas!
I know that it may seem off topic, but it IS related to Ham Radio!
Thanks again!
Rod
KC7CJO
--- On Thu,
LOOKING FORWARD TO FIRST QSOAM WATCHING THE FREQS MENTIONED IN
EARLIER MESSAGESHPE C UALL TONIGHT.
DAVID/WD4KPD
David, where are you going to be at and what time, I'm in Texas. I been on
14075 usb most of the day and been calling CQ at times.
Russell
=
IN GOD WE TRUST !
=
Russell Blair (NC5O)
Skype-Russell.Blair
Hell Field #300
DRCC #55
30m Dig-group #693
--- On
Also keep en eye on http://www.obriensweb.com/sked
Very useful..
At 02:01 PM 1/8/2009, you wrote:
LOOKING FORWARD TO FIRST QSOAM WATCHING THE FREQS MENTIONED IN
EARLIER MESSAGESHPE C UALL TONIGHT.
DAVID/WD4KPD
I heard some MFTTY signals but they would not decode.. no RX print at all..
73 Buddy WB4M
- Original Message -
From: wd4kpd wd4...@suddenlink.net
To: digitalradio@yahoogroups.com
Sent: Thursday, January 08, 2009 3:01 PM
Subject: [digitalradio] MFTTY FREQ.
LOOKING FORWARD TO FIRST
The KN4LF Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast
#2009-02 has been published on Thursday 01/08/2009 at 2000 UTC, valid
UTC Saturday 01/10/2009 through 2359 UTC Friday 01/16/2009 at
http://www.kn4lf.com/kn4lf6.htm .
73 GUD DX,
Thomas F. Giella, KN4LF
Lakeland, FL,
Hello Sholto,
In the Yaesu FT-450 Yahoo group photo files there are a series of receive
BW scans I took with my 450, with a couple of 857 scans thrown in for
comparison. If it has a narrow CW filter, the 857 IMO wins on filtering
and its audio DPS works extremely well as an adjunct to
Cortland,
Thanks for the info. Can I ask what firmware version is on your 450?
Presumably the tx filter is implemented by DSP on these models and it
may just be a software issue which in time may be fixed.
The version here is 0194.
Regarding the rx filtering I am quite happy with the rig.
Hey, Steinar!
Tried to bring up MFTTY but encountered a problem.
I get this flag:
Run Time Error '429':
ActiveX component can't create object.
Howard W6IDS
Richmond, IN
- Original Message -
From: Steinar Aanesland saa...@broadpark.no
To: digitalradio@yahoogroups.com
Sent:
Forgot to mention, if it matters, that I'm running VISTA.
Howard W6IDS
- Original Message -
From: W6IDS w6...@verizon.net
To: digitalradio@yahoogroups.com
Sent: Thursday, January 08, 2009 10:46 PM
Subject: Re: [digitalradio] MFTTY on 80m
Hey, Steinar!
Tried to bring up MFTTY but
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