Re: [FT897] BEACON GLITCH ON BATTERIES
- Bob . . .
"Shut-down" was the wrong term. The radio doesn't shut-down, the beacon
shuts-down . . . i.e., fails to continue sending. The rig continues to
operate fine with normal (manual) keying at any speed and at maximum 20
I'll continue to check the batteries, but don't think that's the
problem. (I've been wrong before).
Thanks . . .
> I wonder if the batteries are REALLY at "Full Charge"? Full charge is[Non-text portions of this message have been removed]
> typically 16 volts, D.C. and drops to around 14.5 volts after a short
> time. If the
> TRANSMIT voltage is at or below 11.5 volts, shutdown is NORMAL. (These
> batteries REQUIRE at least 16 volts from the charger to reach FULL
> charge) What
> voltage readings do you get? Use BOTH the internal FT-897 display, AND
> accurate EXTERNAL digital meter---improper CALIBRATION may cause
> problems, so
> checking with another meter is advised. 73, KC3VO-Bob
> [Non-text portions of this message have been removed]
- I use a homebrew copper dual band antenna for 2 and 70, works
extremly well on 2m the swr is up abit on 70cm, but hey thats what
the tonna's for.
To sum up i built my first antenna that actually works and all for
under £10 (GBP).
73 de jason
--- In FT897@yahoogroups.com, "Larry P Thomas" <lpthomas@k...> wrote:
> For what it's worth, there are some designs for dual band J-poles
> nicely with the single output port of the FT-897. Arrow sells one
> $40 and I was given all the details by Allen Lowe of Arrow in the
> want to make one yourself.
> Details can be found at http://www.krell.com/projects/J-
> Very little metal work is needed for this design. The commercial
> does use a harder aluminum (6061-T6 I think) than you typically
buy at the
> local hardware store (2024) so the commercial unit is usually
> design uses an interesting matching network so don't change the
> the rods or their spacing if you want good SWR on both bands.
> To give an answer to your question, diplexer/duplexer, I am not
> is any difference. Both should be bidirectional and work either
> Basically they are a high pass filter for the 70 cm side to block
the 2 m
> signal and a low pass for the 2 m side to block the 70 cm signal.
> on both filters typically cross near the same frequency so common
> effectively open and any frequency. Coils and capacitors have high
> current and voltage ratings to work at the rated power.
> Hope this helps.
> Larry P. Thomas, wa0gwa
> Imagine it/Achieve it --- Dream it/Become it
> Larry P. Thomas, wa0gwa 1 913 244-8761
> Krell Technologies (http://www.krell.com)
> PO BOX 3565, OLATHE, KS 66063-3565 USA
> -----Original Message-----
> From: FT897@yahoogroups.com [mailto:FT897@yahoogroups.com] On
Behalf Of Lee
> Sent: Saturday, July 30, 2005 10:32 PM
> To: FT897@yahoogroups.com
> Subject: [FT897] Antenna Question ...
> Hello all ...
> I've gotten around to making a J-Pole for my FT-897 ... however, I
> a question ... I would like to make a copper cactus for both 2m
> bands. However, since I only have one 144/430 jack on the back of
> radio ... I was under the impression that I would need to use a
> for the 2 antennas.
> Now this leads me to the question ... where to find a diplexer?
> found many _DUPLEXERS_ ... however, as I read on them, they're
> for combining two radios to 1 antenna ... can I turn it around and
> it like I'd want to? Trying to find a _DIPLEXER_ is proving
> at best.
> BTW, one of the more curious components that I've found is the
> CF-530C ... which is designed to what I want to do (but different
> Any ideas?
> Yahoo! Groups Links
- I was reviewing my QST magazines recently and came across an article on
dualband J antennas. The conventional 2 meter J is resonant on 450 (odd
harmonic) but is about 6db down due to high angle radiation lobes. The
author found a solution to this problem with a decoupling stub. He calls it
the DBJ-1. I'm going to try one on the 897. He appartenly now also has a
rollup model of this same antenna that would be good for portable operation.
Here is a URL: http://www2.arrl.org/tis/info/pdf/0302038.pdf
- Alan wb6zqz
At 11:49 AM 8/2/2005, Jason wrote:
>I use a homebrew copper dual band antenna for 2 and 70, works
>extremly well on 2m the swr is up abit on 70cm, but hey thats what
>the tonna's for.
>To sum up i built my first antenna that actually works and all for
>under £10 (GBP).
>73 de jason