FAQ
for the Yaesu FT-847 transceiver
Last Updated 08-Oct-2002
The initial version of these FAQ-pages were maintained by Jay, K1UC and were
given to my hands (Peter, DH1NGP). Jay said, that he has sold his FT847-Transceiver
and therfore he hasn't the possibilities to further maintain these pages. Thank
you, Jay for your great work ! I'll try to maintain these pages in the same
quality like you have done in the past years. Vy 73 de Peter, DH1NGP !
These FAQs are intended to answer some questions about the FT-847,
particularly those that seem to appear repeatedly on the Bulletin Board. It
is not complete, and only reflects those topics with which the author is familiar
or those reported by other knowledgeable hams. Please send any errors, corrections,
or suggestions to Peter, DH1NGP.
Your postings to the web page have made the information in these FAQs possible,
so please advise Peter of any additional FAQs or corrections to the information
shown here.
Please note that many of the FAQs have updates appended to them with more recent information. When you
refer to a FAQ, take at look near the end to see if there are any updates for it. You can also check the log to
see what each changes have been made to the FAQ.
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[A] [B] [C] [D]
[E] [F] [G] [H]
[I] [J] [K] [L]
[M] [N] [O] [P]
[Q] [R] [S] [T]
[U] [V] [W] [X]
[Y] [Z]
| [A] |
| ALC Control of RF Power Output |
Alignment Menu
Reports on the Alignment
Menu
Typical Alignment Menu Settings |
| AM Transmissions, Setting Mike Level Properly |
| Amplifiers, Linear |
| Antenna Connections |
| ARS, Loss of after transmit range modification |
| ARS on 10m & 6m |
| AT-11 Auto Tuner |
ATAS-100, General
ATAS-100 Menu 31 Setting Reverts to TUNER setting
Radio Hangs Up in TUNER Mode |
| Homebrew Control of ATAS-100 motor - Direct Link to URL |
| |
| [B] |
| Backup Battery, Replacement |
| Birdies |
| |
| [C] |
| Cabling, Problems with Jumpers and PL-259 Plugs |
| CAT Cable Between Rig & PC |
| CAT Control Operations |
| Chattering or Clicking Relays, Display Dims on TX |
| Clarifier, Characteristics |
| Cloning or Saving Radio Configurations |
| Control Panel & Display Locked Up! |
| Crossband Operations |
| CTCSS Issues |
| |
| [D] |
| Data Port (see Digital Operations) |
| DC Power Cord |
| Digital Operations, General |
| Data In/Out Port |
| FM Packet Port |
| Connecting your TNC at 9600 bps & 1200
bps |
| Interfacing with Various Controllers |
| Mike stays open when using Data In/Out Port
for Transmitting |
| Sound Cards & FT847 |
| DOX interface from
Sept. 2000 QST |
| Interfacing FT-847 to IBM Thinkpad |
| DIN, Mini- source for plugs for Amp Control |
| Display Dims on TX, Chattering or Clicking Relays |
| Display Locked up, Control Panel Doesn't Work, TX Locked on! |
| DOX Interface from Sept. 2000 QST |
| DSP, Digital Signal Processing, General |
| Digital Filter |
| Noise Reduction |
| Notch Filter |
| "Clicking" sound when turning |
| Duplexers for FT-847 |
| |
| [E] [F] |
Fan Issues, General
Zener Diode Fix
Gang the fans fix
Disconnect fix
Replacement fix |
FC-20 Auto Tuner, General
Matching range
Workaround for Matching Range
Limits
CAT Control & FC-20 Conflicts
Workaround
for CAT & FC-20 Conflicts
Outstanding
information about using the CAT interface and the FC-20 tuner at the same
time |
| Filters (see also INRAD filters) |
Frequency Questions, General
Frequency Accuracy
Tweaking Reference Oscillator
Frequency
Frequency Stability |
| Front Panel Disassembly (for working on headphones or replacing power
switch) |
| Frozen Display & Dials |
| FT-100 FAQs Page by K0LEE |
| Full Break-in, or QSK |
| |
| [G] |
| Grounding Problems |
| |
| [H] |
| Headphone Volume |
| |
| [I] |
| Internal Keyer For Practice |
| INRAD Filters (see also Filters) |
| |
| [J] [K] [L] |
| Linear Amplifiers for FT-847 |
| |
| [M] |
| Manual, Errors in Owner's Manual |
| Memory Backup Battery Replacement |
| Memory channels, number of |
| Mike Stays Open when transmitting in Digital Mode |
Microphone Options, General
Stock Microphone
Other Mikes for FT-847 |
| Mobile Mount |
Modifications for the FT-847, General
Opening up transmit range.
Loss of ARS after transmit range modification
Separate Receive and Transmit for
2m & 70cm |
| Modification for Strange Noises on 432 |
| |
| [N] |
| Noise Blanker Operation |
| Noise Reduction, Discussion |
| Noises, Strange, and Other Weird Things |
| Null Modem Cable |
| |
| [O] |
| Open Mike Problem when Transmitting via Data In/Out Port |
| Overload, Receiver, from nearby commercial stations |
| Owner's Manual, Errors |
| |
| [P] |
| Packet (see Digital Operations) |
| Polling Codes for Frequency & Mode |
| Power, limiting maximum output power |
| Power cables, hooking up backwards |
| Power Cord, Replacing, Connectors* |
| Power Output, Control using ALC |
| Power Supply Problems |
| Power Switch Problems |
| Power Switch, Replacing |
| Power Switch, Replacing Only the Inner Parts |
Problems with early models
Fixes by Yaesu under warranty
Fixes not entertained by Yaesu |
PSK31 Operations
Using a narrow CW filter on PSK31 |
| "DOX" interface
for Soundcard Operations |
| [Q] |
| QSK CW Operation |
| |
| [R] |
| Raspy or FMing audio reports on SSB |
| Receive range, limitations on some versions |
| Receiver Overload from nearby commercial stations |
| Relays Chattering or Clicking, Display Dims on TX |
| RIT, Characteristics |
| |
| [S] |
Satellite Operations
Speech Processing in Satellite Mode
Desense Problems in Mode J
Menu #36 Action on Satellite Memories
Crossband Operation in Satellite Mode |
| Scanning Features |
| Serial Numbers - What do they mean? |
| Service Manual |
Software for the PC
Software for the Mac |
| Sound Cards, Interfacing to FT-847 |
| Split Mode operations |
| Sub-tune, characteristics |
| Switch, Power, Replacing |
| Switch, Power, Replacing only the Inner Parts |
| SWR Indicator |
| |
| [T] |
| TNC Interface Problems on 1200 & 9600 |
| Transmit Stuck On, but No TX Audio |
| Tuner (see FC-20 Auto Tuner, AT-11 Auto Tuner) |
| Tuning knob wobble |
| |
| [U] [V] |
| Voice synthesizer (FVS-1A) |
| Volume control issues |
| VOX-There is none |
| |
| [W] [X] [Y] [Z] |
| Yaesu, How to Contact
|
| |
Entire contents Copyright 2002 by Peter
Pfisterer, DH1NGP