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World of Ham Radio 1997
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c528_2.doc
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1997-02-01
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From: Young-Hoon Yoon <yoony@rpi.edu>
The Standard C520 or the C528 has tons of features.
TX/RX mod. Depending on the model( U.S. Japan, Europe) some of the following
steps may be omitted.
First you must open up the RX. To do this
1. press VHF(144) button once to put the rig in the VHF side.
Then press Func-set then Func-ENT This will open up the rig for extended
receive.
2. press UHF(450) button once to put the rig in the UHF side.
While keeping the function button pressed press the following sequence
of buttons LAMP, SET, B, LAMP, 3. Once this is done 900 Mhz band should
be open. To change bands press Func-Set, Func-3.
3. Once that's done now to open the TX part. Put your rig on VHF. Change
your step size to 12.5, press CL(A) Press Func-8, Func-8, Func-7, Func-7
Func-MS.M Now you should have the + sign with out the T and the small
inverted triangle on the display. Set your frequency to 145.00 Mhz
Rotate the rotary knob and change the frequency to 144.9875. Press
Func-SET, Func-ENT then CL. Now your rig should be able to transmit
out of band. About 130Mhz to 176Mhz.
This mod will disappear once the rig is reset. If the rig's ever reset
you must do the mod sequence again.
==============================================================================
From: <U27387@uicvm.uic.edu>
This simple key-in sequence will enable the Standard 528 twin band HT
to receive out of band signals up 999MHz.
1) enter UHF side (UHF is main)
2) enter VFO mode
3) push F + L (function key + light key)
4) then F + 0 (function key + zero key)
5) next F + code (funtion key + code key)
6) then F + L (function key + light key (again))
7) next F + 3 (function key + three key)
8) then PTT (push to talk button)
Now your in! To change bands you have to press F + 0 followed by F + 3,
this is the toggle function. Each time you enter the F + 0 and F + 3
the receiver will jump bands. To get back to 440 (where you started from)
keep using the toggle sequence.
If you did something wrong and the HT losses its mind DON'T PANIC! Just
push the microproc. reset button. I have done this keyboard entery mod to
my HT and it works. The sensitivity isn't great, but you can pick up any-
thing that has a strong signal.
This information was obtained from the local Standard representitive in
Chicago.
==============================================================================
From: Lawrie.Brown@adfa.oz.au
I too have a Standard C528 (as do quite a few of the other local amateurs
here), and I'm very happy with it. In addition to the sequence you gave,
there is also a (longer) sequence which enables wide-band transmit (how
wide I don't know as I've no need to use it). There are also quite a few
additional functions available off the keyboard from those documented.
Appended below this is a table (which I keep as an Excel spreadsheet),
listing the various functions in rather abbreviated form - I'd be very
interested in learning about any others.
Note the extra memory channels - there are actually 20 on each band, the
upper 10 are accessed as shown below (accesed with a F+A prefix key,
and displayed with a bar over the number). You can't use them in band
scanning, but apart from that they function as normal memories.
Standard C528 Keystroke Cheat-sheet
Key\Seq key F+key Set,key Set,F+key
------------------------------------------------------------------------------
0 0 Set / Scan mode Mute beep Set freq limits
1 1 PTT Lock # Pager beeps 2sec xbRPT delay
2 2 Dual Operation 1 kHz entry Tone scan stop
3 3 TX Power Pager TX delay UHF band switch
4 4 Freq lock Squelch mute 4 digit entry
5 5 Battery save Auto Power save Mute pager audio
6 6 Tuning step Rotary enable in FL 1MHz step
7 7 Tone coder on/off Set Tone freq DTMF single tone
8 8 Repeater mode Set Offset freq Crossband RPT
9 9 Reverse mode LAMP is REV 10MHz up/down
* PS step DOWN Dial/Tone Scan DTMF Clone
# SHIFT step UP Memory freq shift
Call Tone burst
A CL Cancel
B PAG Page on/off Page code set/show
C MS MS.M Mem scan MS.M set/scan
D V/M ENT Mem<->Dial Memory set
VHF VHF main VHF only
UHF UHF main UHF only
LAMP Lamp on/off Lamp toggle
SQL OFF Squelch off sub-band sql off
Other Key Sequences
------------------------------------------------------------------------------
Wideband RX: Reset, VHF, F+0, F+D, PTT, UHF, F+L, F+0, F+B, F+L, F+3, PTT
Wideband TX: VHF, F+6, PTT, F+8, F+8, F+7, F+7, F+C, rotate down 1,
" F+0, F+D, PTT, F+8, F+C, F+0, F+4 (F+0, F+3)*4
Set Upper 10 Memory channels: F+D, F+A, num
------------------------------------------------------------------------------
The 520/28 is very flexible capable
of TX RX on 122.825 to 176.800MHz
and 328.000 to 473.125MHz.
And RX only on 820.225 to 972.500MHz.
The following are not in the owners book.
F=FUNC L=LIGHT
______________________________________
There are two ways to set Rx wide band
if you press reset you will need this
(A)
1 F + VHF
2 F + 0
3 F + D
4 RELEASE F
5 PRESS UHF
6 F + 0
7 F + D
8 F + L
9 F + B
10 F + 3
11 F + 0
12 F + 3
13 F + 0
14 F + 3
15 F + L
TO CANCEL RESET?
______________________________________
(B)
1 F + 0
2 F + D
3 PTT ON 145.00MHz IS DISPLAYED
4 PRESS VHF
5 F + L
6 F + 0
7 F + B
8 F + L
9 F + 3
10 PTT ON 433.00MHz IS DISPLAYED
TO CANCEL RESET?
THE RX IS NOW WIDE BAND
FOR TX CONTINUE BELOW
______________________________________
TX WIDE BAND PROCEDURE
1 VHF
2 F + 6
3 CHANGE FREQUENCY STEP FROM 10KHz
TO 12.5KHz BY ROTARY SELECTOR
4 PTT ON 145.00MHz IS DISPLAYED
5 F + 8
6 F + 8 CONFIRM T AND + IN DISPLAY
7 F + 7
8 F + 7
9 F + C
10 SET 144.9875 BY ROTARY SELECTOR
11 CONFIRM THE SMALL 75 ON DISPLAY
12 F + 0
13 F + D
14 PTT ON
15 F + 8
16 F + C
TO CANCEL RESET?
_____________________________________
TO TOGGLE BETWEEN 3-400 AND 8-960 MHz
1 SET MAIN BAND TO UHF
2 F + 0
3 F + 3
______________________________________
DIRECT 4 DIGIT KEY INPUT
1 F + 0
2 F + 4
DISPLAYS A . BETWEEN 2nd AND 3rd DIGIT
TO CANCEL REPEAT ABOVE
______________________________________
10 MHz SHIFT BY UP/DOWN KEYS
1 F + 0
2 F + 9
TO CANCEL REPEAT ABOVE
______________________________________
40 CHANNALS MEMORY
There are 2 memory channels per memory number on VHF and UHF. They can be
used in 2 ways.
(A)To provide programble RX TX frequencies
(B)To double the simplex channels available
(A)
1 SELECT RX FREQ (VFO MODE)
2 F + D
3 PRESS MEMORY NO TO BE PROGRAMMED
4 D
5 SELECT TX FREQUENCY
6 F + D
7 F + THE MEMORY NO TO BE PROGRAMMED
+ - will appear indicates that memory channel is in split frequency mode
Once a memory is in split mode it cannot be changed back to a single
memory unless its programmed as a extra channel (see below) or reset
F + 9 WILL SWAP RX AND TX
(B) Extend to 40 memories
Program first 10 memories in each band to program additional 10 memories
1 SELECT FREQUENCY (VFO MODE)
2 F + D _
3 F + A AN M WILL APPEAR
4 PRESS MEMORY NO TO BE PROGRAMMED
To recall extra memories use rotary control in memory mode or enter memory
mode and press
F + A
THE M AND BAR APPEARS PRESSING
0 to 9 will recall ex channels the ex channels can have rep shift
and ctcss tones but value will be the same for both channels in one memory
______________________________________
DTMF CLONE
COPYS YOUR SETTINGS TO ANOTHER 520/28
TUNE BOTH RADIOS TO SAME FREQUENCY
1 B P IS DISPLAYED
2 B C IS DISPLAYED
3 F + 0
4 F + PS
5 PTT ONLY ON THE RADIO THAT CONTAINS THE MEMORY DATA
A series of tones will be heard for approx 2 minutes the radio memorys
will now be identical
______________________________________
DTMF SINGLE TONE
1 F + 0
2 F + 7
TO CANCEL REPEAT ABOVE
______________________________________
MUTING THE AUDIO OUTPUT OF PAGER
1 F + 0
2 F + 5
TO CANCEL REPEAT ABOVE
______________________________________
TONE SQUELCH SCAN STOP
1 F + 0
2 F + 2
TO CANCEL REPEAT ABOVE
______________________________________
H.H.TRANSPONDER SUB BAND TO MAIN
1 F + 0
2 F + 8
A . APPEARS TOP RIGHT OF MEMORY NO
TO CANCEL SET SUB BAND ON CLEAR FREQUENCY BY ROTARY SELECTOR AND PRESS UHF OR
VHF
_____________________________________
TOGGELS BETWEEN 100KHz AND 1MHz STEPS
ON ROTARY SELECTOR WHEN FUNC IS PRESSED (FAST TUNING RATE)
1 F + 0
2 F + 6
_____________________________________
SET FREQUENCY LIMIT ON EACH BAND
1 F + 0
2 F + 0
______________________________________
SET TX HANG DURING TRANAPONDER FUNC
1 F + 0
2 F + 1
______________________________________
Be very carfull with the h.h.transponder
and wide band tx func.
G7IED @ GB7FCI
==============================================================================
From: <U27387@uicvm.uic.edu>
Subject: Standard C528A receiver mods (999MHz)
To enable the Standard twin band HT to receive way out of band enter the
following key-board sequence.
First enter UHF side (UHF main)
then enter VFO mode, now follow these steps..
1) press F + L (function key + light key)
2) press F + 0 (function key + zero key)
2) press F + code (function key + code key)
3) press F + L (function key + light key (again))
4) press F + 3 (function key + three key)
5) " " PTT (push to talk button (will not xmit))
now press the F + 0 (function key + zero key) and the F + 3 (function key
+ three key) to toggle bands. i.e. you are starting out at 440MHz, push
the F + 0 and F + 3. Now you should be at 840MHz. If you want to get
back to 440MHz keep pushing the toggle sequence and your wish will come true.
==============================================================================
Hi All,
another mode from Elio IK4NYY.
I would like to thank him for the mod plus a very big Thanks to Steve's (G8SFR)
Xyl Alison for retypeing out the mod for me into English.
This has been sent mainly as a guide and that i can not be of any help if you
run into trouble, but i bet there are more tec minded people that can help
you.
De Steve G0OMM @ GB7OMM.#34.GBR.EU
With this simple mod, you can upgrade your Standard C520/528 using
rechargable batteries without having to spend a lot.
You will need to get 6 rechargeables of 600\700 mah, a resister of 33ohm 2 watt
and two diodes of 1 amp type 1N4004.
Start by taking off the outside cover. To open the transceiver, you need to
remove the small metal plate where you will find the battery pack held in
place by 4 little screws, the cross-headed screws mounted laterally on the
back.
It's all you have to do, the transceiver will open.
Carefully open the two parts holding together from the flat cable upon which
half you should find the finger control/keyboard and a long wire approx 7 cms.
You can't miss it, it's the only wire there is.
Now, from the point where this is soldered onto the lower, bottom part of the
transceiver, solder a small piece of wire about 3 or 4cms.
The other end should be soldered to the PCB where there is a large/fat/wide
soldered little square (PCB Track?) which also cannot be missed tacking as
orientation the connector from the external power supply: The said little
square stands on its own and with this the mod on the inside of the apparatus
are complete and can now recharge them
Now let us look at the battery pack (Model CBT 151).
Open the two parts and take out only that one where you see the sign +
(positive).
Note where the first battery is, its positive pole resting on the little
metallic tab( tongue) having the shape and the characteristics of a corner
angle slipped off from its housing towards the top.
Do not worry, it is only fixed in and divides with cutters in the middle of the
corner/angle.
Be careful when separating with the cutters, The two parts may tend to fall
apart, thus, if you are not careful you can lose a piece.
If this happens, do not worry , but be very careful that this does not happen.
Take the smallest piece, namely that which is mounteed next to the + symbol and
solder on top of the terminals the two diodes in series opposite in between,
namely an anode and a cathode.
Mind that the pieces of the terminals are chromed metal, ie, on the point when
you intend to solder the join, it is necessary you clean in a bit first with a
thin sanding paper, solder it and try to slide it away; you can also help by
using some soldering flux such as a deoxydising one.
Do this soldering, solder the diodes to the very edges of the resister (divie
the leads furthest most extreme side k cathode diod-resistance).
Now remount the first piece on the capaciter moulded sockets of resistor of 33
ohms and diodes so that they can be fixed in the restricted space at the side
of the first battery.
Also replace the other piece of the metal tab onto place and solder it on top
of the terminal along the resister (on to which is attached :- A anode of the
diode.
That is basically it.
One last thing, make absolutely sure that there exists no kind of electrical
contact from the two metal tabs from your solders.
Mount on the battery carriers the six rechargeable batteries, check again the
whole thing and connect on the switch of the external feeder/power supply a
voltage of 10 to 12 volts and let the batteries charge up.
The apparatus can then work on batteries and with the power supply; When
working with the latter, The batteries will just charge up, In spite of all the
modification...
==============================================================================
From: dplumb@cix.compulink.co.uk (Dave Plumb)
Standard C520/C528 Modifications
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This file is a compendium from to others being bandied about the place. It
is hoped this will be the better of them, being the easiest to follow!
o To open up the rx only up on the unit on VHF:
VHF F+0 F+D
o To add 320-400MHz, 400-480MHz, 820-900MHz, 900-980MHz:
UHF F+L F+0 F+B F+L F+3 A
o To Expand Tx/Rx coverage, do both the above in that order, then:
VHF F+6 change step to 12.5MHz A
F+8 F+8 F+C
Tune down to 144.9875
F+0 F+D PTT F+8 F+C
o To Store independent transmit/receive frequency in one channel:
Enter receive frequency into dial
F+D <mem number>
Enter transmit frequency into dial
F+D F+A F+<mem number> A
o To Clear the tx assignment offset:
F+D F+A <mem number>+A F+A A
o To Clone one set to another:
B B F+0 F+PS then key up on the set to clone from
Set mode key assignments:
The set mode allows a number of user parameters to be customised according
to individual taste. Set mode is initiated by pressing F+0. The following
are entered after going into set mode:
0 Turns off the beep tones on each keypress
F+0 Sets band edge limits, i.e. 0079=100-179, 400-479. 3060=130-160
1 Changes count of paging operations tone, one beep or 5
F+1 Set tx delay on carrier drop when using as cross-band repeater
2 Enables entry of the 1kHz figure on direct keypad entry
F+2 Stop scan on busy channel even if CTCSS doesn't match
3 Sets mod delay on paging Tx to either 450ms or 750ms
F+3 Switch UHF bands between 300/400/800/900
4 Mutes short noises during squelch operation
F+4 Keypad entry of 4 digit or 3 digit frequency
5 Turns on and off the auto power off function
F+5 Pager Audio Mute (effectively disables pager)
6 Enable/Disable the rotary channel knob when keypad locked
F+6 Fast tune (F+KNOB) gives either 1MHz steps, or 100kHz
7 Sets the CTCSS tone frequency
F+7 Either Dual Tone Multi Frequency, or Single Tone Frequency
8 Sets the offset repeater frequency
F+8 Cross Band Repeater Enable/Disable (Identified on display by a ".")
9 Changes the LAMP button into the REV button
F+9 Up and Down keys either act as the knob, or as 10MHz steps.
Quick Chart:
/---------------------------------------------------------------------------\
| Standard C520/528 - Keypad Guide |
|---------------------------------------------------------------------------|
|Key| Alone | With "FUNC" key | Key alone in set |In Set With "F" |
|---------------------------------------------------------------------------|
| 0 | 0 |Enter Set Mode |Mute keypad bleep |Set Band Edge Limit|
| 1 | 1 |Disable Transmitter |1/5 beeps when paged|Tx wait on c-b rept|
| 2 | 2 |Dual Watch Operation|1kHz entry on keypad|CTCSS Scan Stop |
| 3 | 3 |Select Output Power |Tx Delay on repeater|Switch UHF Bands |
| 4 | 4 |Frequency Lock |Mute during squelch |4/3 digit direct fr|
| 5 | 5 |Battery Saver Mode |Automatic powr off |Pager Audio Mute |
| 6 | 6 |Select Step Size |Enable tune in lock |Fast tune 1MHz/100k|
| 7 | 7 |CTCSS select TX/RX |CTCSS tone frequency|Single/Dual tone MF|
| 8 | 8 |Repeater Shift +/- |Set Tx/Rx split freq|Cross Band Repeater|
| 9 | 9 |Reverse Split |Make LAMP button REV|Up/Dn keys do 10MHz|
| * |Step Down|Search 1MHz band | | |
| # |Step Up |Memory Shift | | |
| A |Cancel | | | |
| B |Pager On |Set Pager Codes | | |
| C |Mem Scan |Partial Memory Scan | | |
| D |Dial/Mem |Store Dial In Memory| |Extend RX coverage |
|VHF|Tx VHF |Enable VHF Only | | |
|UHF|Tx UHF |Enable UHF Only | | |
|---------------------------------------------------------------------------|
| To expand Rx coverage only |
|---------------------------------------------------------------------------|
| VHF F+0 F+D |
|---------------------------------------------------------------------------|
| To add 320-400,400-480,820-900,900-980 |
|---------------------------------------------------------------------------|
| UHF F+L F+0 F+B F+L F+3 A |
|---------------------------------------------------------------------------|
| To Expand Tx and Rx coverage: |
|---------------------------------------------------------------------------|
| VHF F+0 F+D A ; Extends RX coverage |
| UHF F+L F+0 F+B F+L F+3 A ; Gives 300/800/900MHz |
| VHF F+6 step to 12.5MHz A ; This appears to set a special condition |
| F+8 F+8 F+C ; within the unit which is stored with F+C. |
| tune down to 144.9875 ; All params must be correct for it to work |
| F+0 F+D PTT F+8 F+C ; And Store it |
|---------------------------------------------------------------------------|
| To store independent transmit and receive frequency in one memory channel |
|---------------------------------------------------------------------------|
| Enter receive frequency into dial |
| F+D <mem number> |
| Enter transmit frequency into dial |
| F+D F+A F+<mem number> A |
|---------------------------------------------------------------------------|
| To remove independent transmit frequency from memory |
|---------------------------------------------------------------------------|
| F+D F+A <mem number>+A F+A A |
|---------------------------------------------------------------------------|
| To clone one set to another |
|---------------------------------------------------------------------------|
| B B F+0 F+PS on both sets, and PTT on the one to clone from |
\---------------------------------------------------------------------------/
==============================================================================
From: dplumb@cix.compulink.co.uk (Dave Plumb)
the mod for the C528
it's:
VHF F+0 F+D UHF F+L F+0 F+B F+L F+3 A
The "L" is the light, F+L means press function, and while pressing function,
press the "Light" button. The above sequence opens up the set for rx for all
limits.