开云体育

I also have the RS supply and find it unusable because of RF noise.

Paul
KB8VWV

Don,

thanks for the information. I have a goldline now and professional boom and
mount that I want to use if possible. Thinking about using a w2ihy equalizer.
I have run 1 watt for 15 years plus and want to try the 817, but at 1 watt I
need all the audio I can get - clarity and punch.
mike




"Don" <k7ugq@...> wrote:
After some testing with the FT-817 and microphones, I find the using a mike
with a graphic equalizer to have the most flexibility and be better apt to
produce the results you might want. ICOM and MFJ make a couple very good
mics with graphic equalizers.

One important note, if you use the MFJ, do NOT buy the $15.99 matching Yaesu
interface cable, it does not work with the FT-817. However, Radio Shack
sells a very well made CAT 5 cable that is "plug and play" with the FT-817.
Works very well.

Another caution, if your shack has a lot of floating RF around, (poor
grounds, in-door antenna, etc) you may experience instability when using
some of these cables that use RJ-45 connectors. Very few are shielded and
act as a good antenna for stray RF at close range. The effect is distortion
and squealing on your transmitted signal. Beads and chocks don't wok very
good.

Per subject,

Heading to London for a week and may plan bring rig if I
can get awayw without bringin my laptop. :)
Any worthwhile electronics shops reachable within Zone 1&2 ?

Thanks in advance,

- Joe, NE2Z

I'm a new owner of an FT-817, since Dayton, and have typically
operated the rig on a wall power supply. Just the passed few days I
wanted to operate portable, but found the rig would shut down when
using high power. The problem appears to be the battery pack voltage
drops considerably on transmit, from 12 volts receive only to about
9.8 volts at 5 watts output after a short period of usage. I measured
the battery voltage at the terminals of the internal battery pack
while transmitting in to a dummy load and found the voltage shown on
the rig's front panel to be about 0.5 volts lower that what I measure
at terminals. A large voltage drop also appears across each cell in
the battery pack. The problem appears to be the type of battery
used.

I researched the different battery types which can be used in the
rig, Nickel-Cadmium, Carbon/Manganese Dioxide-Zinc, Alkaline, and
Nickel-Metal Hydride. The key parameter I was interested in was the
cell's internal resistance. The higher the internal resistance the
larger the terminal voltage drop will be. Since the discharge current
can be close to 2 amps at the 5 watt setting the voltage drop can be
considerable if the cell's internal resistance is very high. For the
various types of cells I found the typical internal resistance for a
size AA package as shown below.

Nickel-Metal Hydride - 0.030 ohms for a fully charged cell, and 0.040
ohms for a ? charged cell
Nickel-Cadmium - 0.037 ohms typical
Carbon/Manganese Dioxide-Zinc - 0.50 ohms
Alkaline - 0.126 ohms for a fresh cell

(Data based on types Energizer No. NH15, Energizer No. EC-800AA,
Eveready No. 1215, and Energizer No. X91)

It would appear the best cells to use are either of the two
rechargeable types. The worst choice is the Carbon/Manganese Dioxide-
Zinc cell. In a pinch the Alkaline cell can be used. Assuming about 2
amps on transmit and 8 Alkaline cells used I calculate about a 2 volt
drop, which agrees with the measurements I made. After seeing this I
can't recommend anyone using anything other than the Nickel-Cadmium,
or the Nickel-Metal Hydride rechargeable battery packs with this
radio.

Some very good material about the different battery types can be
found at the URL below along with data sheets for the different
battery types and sizes.



Leland C. Scott
KC8LDO

Visit Martin Lynch and Son - you can get subway line/stop from:


Chris Taylor G0WIZ
Sales Director
Martin Lynch and Son
www.hamradio.co.uk

John G0VGZ wrote:

Lets start a campaign.

I agree with you, John! kW giants rule the earth on 20 metres SSB. How
can a little FT817 operator expect to be heard? In fact, if a signal
is not S7 or above, many 20m SSB operators ignore it. The "14285kHz
QRP SSB frequency" is a joke. 1kHz above, 14286kHz is the "AM
frequency". A sense of humor is required! :-)

Even if AMers are not using 14286, and most operators are courteous, a
voice passband surrounding 14285 is not respected (14283ish~14287ish).
As another example, the "Greek Net" has never given up 14285, so they
continue to spoil it for low power DXing in half the world. In North
America, "special event stations" take over when the AMers are
unkeyed.

About a month ago, I posted some comments about this subject and a
possible solution to it on HFpack (included below).

As for the subject of "What is Low Power?"... The standard definition
of "QRP" is <5 Watts transmitter output power on CW. But SSB is a very
different mode from CW, especially when considering propagation on the
middle HF frequencies (14MHz). 50 Watts SSB forms a practical dividing
line between "low power" and "normal power" classes of SSB stations on
20 metres. 50Watts SSB has a similar communication capability as
about 2Watts or 5Watts CW.

73---Bonnie KQ6XA
PS:attachment follows
------------------

Low Power Window 14340~14350 kHz. A Band Plan Proposal.

Should we advocate a Low Power Window at 14340~14350kHz?
Low Power SSB operation has become so vastly popular, that it is now
possible to start a movement to change the band plan through friendly
advocacy with the major clubs and radio societies. A major change in
operating habits takes years to catch on. Legacy QRO nets could be
given some years to find other frequencies, or co-exist. If we start
now, we could win acceptance within the next 5 years.

The Present Problem on 14MHz:
SSB operation on the entire 20m band is now dominated by stations
using 100W or more. At present, the single designated 14285kHz QRP
frequency is no good, due to interference from QRO SSB and AM
operations. The channel width of a single frequency is often ignored
by casual operators. A "window" or segment of frequencies is more
appropriate.

Choice of Low Power Window frequency range:
A Low Power Window on top end of 20 metres has the best chance of
success. 14336kHz is the most active net frequency on upper 20m. The
14336 net forms the basis of natural frequency selection in the upper
part of 20m. 14339kHz (is widely used as an auxiliary freq by the same
and other nets.

Defining the Low Power Window:
50 Watts maximum is proposed. 50W is a useful power level for SSB. It
is basically equivalent to about 5W CW. The frequency range
14340~14350kHz USB will hold 3 Low Power SSB "channels" (2.5kHz wide
each). 2.5kHz is enough for a low power channel. Here is a proposed
USB "Low Power Window" (carrier) frequency list:
14342.0 kHz
14344.5 kHz
14347.0 kHz

Chances for Success:
No HF band plan has been 100% successful. The 90% successful "160m DX
window" was started by just an idea among a small group of hams. A
"20m Low Power Window" could be successful gradually. It is certainly
worth trying. There is strength in numbers.

Bonnie KQ6XA

In some ways I agree and other ways I don't. My Ft-817, when used at home
(my only rig it is) is coupled to an outdoor yagi for 20 thru 6 meters, a
wire flat top for low bands and a yagi for VHF. I use a very good mic with
speech compression and an equalizer. I might entertain purchasing a small
power rf amp for a little QRP/QRO activity.

However, since I travel a lot, my FT-817 and the batteries and portable
antenna get packed in my luggage and away we go, the highest room in the
hotels of various cities around the world. It is great working QRP/hf with
a whip antenna when your 200 feet up!!

That's the beauty and uniqueness of the FT-817, it is versatile and can
serve many masters!

--- In FT817@y..., "Gene Sailsbury" <gsailsbury@m...> wrote:

I found one at RS but it only says 3 amps while the FT-817 manual

calls for

up to 7 amps. Would someone explain how this would work? I have

no idea as

I am new at ham radio. Had my FT-817 5 days. TNX
Gene Sailsbury KC0IKY

Welcome Gene!

Where did you see 7 A please? The rig draws no more than 2 amps
under full transmit power. A 3-amp supply is fine. THe CUP36-12-1
some of us use is rated at 2.4 A and works just fine.

If you need for help, please email me direct at w4wb @ arrl.net
(leave out the spaces please around the @ .)

72/73 de Barry - W4WB

I found one at RS but it only says 3 amps while the FT-817 manual calls for
up to 7 amps. Would someone explain how this would work? I have no idea as
I am new at ham radio. Had my FT-817 5 days. TNX
Gene Sailsbury KC0IKY

Considering selling a number of stations items and purchasing an FT-817, but
need to ask someoner a quesrtion regaridng the mike. I prefer a Heil Goldline
type mike, boom mounted at home. Can't see from the ad pictures what kind of
mike connection there is on the FT-817. Also, anyone using it HF mobile?
Results? If I go this route, it will replace the Kwood 440 in the station, the
Argo 556, and the Kwood 130 in the van. Need some help here please.
mike
wb5yjx

____________________________________________________________________
Get free email and a permanent address at

--- In FT817@y..., w4wb@a... wrote:

--- In FT817@y..., rgulliford@h... wrote:

The backlight on my 817 display does not automatically shut off
anymore. I've ensured that "AUTO" has been enabled and have even
done the "master reset" a couple of times. Any ideas before I

send

it off to Yaesu?

73...Reg ve7og

Hi Reg,

For both of my 817s, the backlight stays on all the time when

powered

by an external source in the specified voltage range with the

setting

in AUTO. When using the internal battery, the display goes off

after

about 5 seconds when in AUTO.

72 de Barry - W4WB

Hi Barry,

Thanks for the info. Saved me sending the rig off.

73...Reg ve7og

--- In FT817@y..., "Anthony R. Gargano" <n2ss@h...> wrote:

I just tried the International CUP36-12 supply but it generates so

much

hash as to make it useless. I'm looking for a compact, noise free

or at

least minimal noise110-220V supply I can take with me on overseas

trips.

Any recommendations based on the group's experience? My next trip

is coming

up in a little over a week, so I'm trying to get something quickly.

Thanks

for any help, Tony N2SS

Tony, you need to send that power supply back to International. I
have the CUP36-12 & I have no hash noise. I just tried it again to
be sure & no noise is heard. I tried it without antenna connected
and with. Compared it with 5 amp gel cell and no difference.
Just have a S without antenna connected. With outside antenna just
atmosphere noise.

Reed W4JZ

Received my Yaesu FT 817 on the 30th of may, and having a ball with it.
Been working all bands with it and enjoying it..
Today, VE3AVS (Dave) and myself biked up to the Thunder Bay
Lookout(About 14 kms in from Pass Lake Ontario).. Set up an antenna for
40 metres, and made 3 qsos on or near the 40 metre QRP frequency...

The band was not in really great shape, but worked K2PTS, N9JWC, and
W8MEH.. While talking to all of these folks, I kept turning the power
down to the .5 watt level, and still they were able to copy me...I was
running the radio off alkaline batteries today.....
When I waorked Frank W8MEH I was at 2.5 watts and received a 599, when I
switched to .5 w, he gave me a 579....So I love it....

This was our preliminary Field Day test site, will be hauling the tent
trailer up and using the Little Thunder QRP Club Call, so listen for
VE3LTQ during field day....

73 Fred
VE3FAL
EN58df

--- In FT817@y..., "KQ6XA" <xtalradio@a...> wrote:

Useful frequencies for HF Portable operation.
------------------------------------------
Portable HF Frequency List (Revised JUNE 2001)
------------------------------------------

Thanks Bonnie I have saved this for print off, the reason I have
added a title of allocated spreads for qrp users in the subject box
is, Do you and the rest of the group think it will ever be feasible
for ALL qrp operators to get together and try persuade the worldwide
governing bodies of Ham radio to maybe allocate for the future, qrp
allocations on most/all bands ie; 20m band, the allocation of
14.250 - 14.290 for qrp operation only. This is only an example and
other bands similair. Yes the smaller the band we all operate the
smaller the allocation, but come on guys how many times have we all
been operating qrp to qrp and found the qso interrupted (not
purposley) by a qro station nearby because of our power used. Mine is
pretty regular, what a gift to operate in spaces only to qso with qrp
stations. Lets start a campaign.
John G0VGZ.

Nature


Got fed up ven trying to make the ATX work/. Cut a dipole for forty and for twenty instead. The forty one and me went /p yesterday. Centre up at c 10 fet, the ends lower. Great interG and french QSO's all on 5 and 2.5 watts. Ace fun.



Today /p with the 20m one. Centre at 15 feet and the ends at about 5. First station the Spnsih DXpedition EA5KB. Great fun.



Do yourselves a faour guys, stop trying to make a 50 inch telescope work when you'll succeed MUCH better with a dipole at almost any height.



I hve mde this point before, but just to reiterate...the physics of RF aren't optional, they are the LAW.



I think Julian's point about Yaesu should have fed HF to the back only, just to encourage us to use wire,is a good one.

Great rig though. Thanks Yaesu.



I'm ready for a flaming now. Off you go.



David

With regard to the International CUP36-12 power supply hash problem. I've been experimenting with ways to reduce the hash. As is with an ATX Walkabout whip tuned to 17 Meters the power supply produces an S8 level of noise. On battery I was S0, i.e. just background noise. No form of shielding the supply had any effect. What did help was to wrap a half dozen turns of the DC lead out of the power supply around a split ferrite core. That reduced the noise to S1-not perfect but tolerable until I find something better. Regards, Tony N2SS

Useful frequencies for HF Portable operation.
------------------------------------------
Portable HF Frequency List (Revised JUNE 2001)
------------------------------------------
1810 CW QRP
1837 USB-PSK31
1842.2 CW QRP
1843 CW Activity
1843 LSB QRP
1909.2 CW QRP
1910 LSB QRP
1992.2 CW HFpack
1993 LSB HFpack
1997.2 CW HFpack
1998 LSB HFpack
2182 AM Int'l Distress Marine
2182 USB Int'l Distress Marine
3560 CW QRP
3579 USB-PSK31
3580 CW Activity
3682.2 CW HFpack
3683 LSB HFpack
3686 CW QRP
3687.2 CW HFpack
3688 LSB HFpack*
3689.2 CW QRP
3690 LSB QRP
3692.2 CW HFpack
3693 LSB HFpack
3710 CW QRP
3984.2 CW QRP
3985 LSB QRP
3992.2 CW HFpack
3993 LSB HFpack
3994.2 CW HFpack
3995 LSB HFpack
3996 USB NVIS Net
3997.2 CW HFpack
3998 LSB HFpack*
4125 USB SAFETY/DISTRESS Marine
5000 AM WWV Time/Freq Standard
5167.5 USB Alaska Emerg Freq
6215 USB SAFETY/DISTRESS Marine
7027 CW Activity
7030 CW QRP
7034 USB-PSK31
7035 CW Activity
7040 CW QRP
7041 CW QRP
7045 CW Activity
7079 USB-PSK31
7082.2 CW HFpack
7083 LSB HFpack
7087.2 CW HFpack
7088 LSB HFpack*
7089.2 CW QRP
7090 LSB QRP
7092.2 CW HFpack
7093 LSB HFpack
7110 CW QRP
7242.2 CW HFpack
7243 LSB HFpack
7247.2 CW HFpack
7248 LSB HFpack*
7252.2 CW HFpack
7253 LSB HFpack
7255 LSB Active Net
7258 LSB Active Net
7268.5 LSB Nets
7283 USB NVIS Net
7284.2 CW QRP
7285 LSB QRP
7296 USB NVIS Net
8291 USB SAFETY/DISTRESS Marine
10000 AM WWV Time/Freq Standard
10106 CW QRP
10116 CW QRP
10136 USB-DATA HFpack**(+1000Hz)
10137 CW HFpack
10141 USB-PSK31
14060 CW QRP
14069.5 USB-PSK31
14071 USB-PSK31
14096 USB-DATA HFpack**(+1000Hz)
14097 CW HFpack
14100 CW NCDXF/IARU Beacons
14200 USB Activity
14285 USB QRP
14300 USB Active Net
14336 USB Active Net
14339 USB Activity
14340 USB Active Net
14342.5 USB HFpack* Calling Alternate
14343.2 CW HFpack
14345 USB HFpack
14345.7 USB HFpack
14347 USB HFpack
14347.7 CW HFpack
15000 AM WWV Time/Freq Standard
18069 CW QRP
18086 CW QRP
18099 USB-PSK31
18106 CW QRP
18106 USB-DATA HFpack**(+1000Hz)
18107 CW HFpack
18110 CW NCDXF/IARU Beacons
18130 USB QRP
18152 USB HFpack
18152.7 CW HFpack
18155 USB Live-Wire
18155.7 CW Live-Wire
18157 USB HFpack* Calling Primary
18157.7 CW HFpack
18162 USB HFpack
18162.7 CW HFpack
21060 CW QRP
21069.5 USB-PSK31
21071 USB-PSK31
21079.5 USB-PSK31
21106 USB-DATA HFpack**(+1000Hz)
21107 CW HFpack
21150 CW NCDXF/IARU Beacons
21285 USB Activity
21300 USB Activity
21385 USB QRP
21432 USB HFpack
21432.7 CW HFpack
21437 USB HFpack*
21437.7 CW HFpack
21442 USB HFpack
21442.7 CW HFpack
24906 CW QRP
24926 USB-DATA HFpack**(+1000Hz)
24927 CW HFpack
24930 CW NCDXF/IARU Beacons
24972 USB HFpack
24972.7 CW HFpack
24977 USB HFpack*
24977.7 CW HFpack
24982 USB HFpack
24982.7 CW HFpack
27065 AM CB-9 Emergency
27185 AM CB-19 Travel
28060 CW QRP
28106 USB-DATA HFpack**(+1000Hz)
28107 CW HFpack
28110 CW QRP
28119 USB-PSK31
28200 CW NCDXF/IARU Beacons
28332 USB HFpack
28332.7 CW HFpack
28337 USB HFpack*
28337.7 CW HFpack
28342 USB HFpack
28342.7 CW HFpack
28360 USB QRP
28385 USB QRP
28885 USB QRP
29600 FM simplex
29510/29610 FM RPT
29520/29620 FM RPT
29540/29640 FM RPT
29560/29660 FM RPT
29580/29680 FM RPT
29590/29690 FM RPT

Notes:
* HFpack SSB Listed Frequency
** HFpack DATA Listed Frequency
1. Standard CW Offset = 700Hz
2. List is subject to change or correction.

Source: Bonnie KQ6XA

Check the lady's handbag section at Wal-Mart. They have several nice
nylon bags. I'm handicapped & got 1 of their small ones for a neck bag
instead of using a wallet & pockets.
73, Fil W8FIL

yahoo@... wrote:

Hello.

I bought a portable CD carry case for ?1.00 at a junk sale. The
817
fits perfectly and the compartment for the CDs holds the VHF antenna
and powerlead for the car. I can even use the radio while walking as
the case had a shoulder strap!

I hadn't thought of using it for the radio, my wife suggested it
sarcastically, then was amazed when the raido fitted in!

Bri G0MJI


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[Non-text portions of this message have been removed]

It's also available from www.W4RT.com/. They are in the US. I got mine
from them along with a "cheat sheet", don't remember the name but it's
latin. Received it quickly after placing order online.
73, Fil W8FIL

K2YEW@... wrote:

Pete,


The Yaesu manual leaves much to be desired. VE3AYR had written a
wonderful
"packet reference manual for the FT-817" Yaesu should have hired this
guy to
write their OEM manual. Easy to understand!


send $ 13.45 USD postpaid to:


FT-817 Book
610 Barons Court
Burlington, Ont. L7R 4E4
Canada


73,


Norm Wesler K2YEW





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public domain upon submission and may appear anywhere on the Internet
or in print without notice or compensation.



Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

It isn't quite that simple... Seems (on mine at least) that if I have even a
few (less than FIVE) volts on the external power connector and the display
is in AUTO mode, the backlight will illuminate. The rig and backlight draws
power from the internal battery pack, and only microamps from the external
connector.

73 de Bob, K6XX
k6xx@...

Date: Sat, 09 Jun 2001 07:10:00 -0000
From: w4wb@...
Subject: Re: backlight display problems

--- In FT817@y..., rgulliford@h... wrote:

The backlight on my 817 display does not automatically shut off
anymore. I've ensured that "AUTO" has been enabled and have even
done the "master reset" a couple of times. Any ideas before I send
it off to Yaesu?

73...Reg ve7og

Hi Reg,

For both of my 817s, the backlight stays on all the time when powered
by an external source in the specified voltage range with the setting
in AUTO. When using the internal battery, the display goes off after
about 5 seconds when in AUTO.

72 de Barry - W4WB



_________________