Standard C5608DA X-band repeat?
Bruce Martin
advertising for this rig says it has a crossband repeat mode and a
cloning capability but the owner's manual gives no mention of these
cababilities. Can anybody shed some light on these and any other hidden
features or modifications? Your help is appreciated.
73
Bruce
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* Bruce W. Martin Internet: mart...@jackatak.raidernet.com *
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David C. Donley
anything out about this radio (with regards to mods etc.) in the usual
mod ftp sites.
So.. I have started to compile my own mini-mod file.
As is usual for this type of file, I must caution you that you almost
certainly will void your waranty by tampering with your radio, and you
may also break laws and destroy your radio. Please be certain that you
know what you are doing. I'm not responsible for anything you do.
Inside the radio, on the top left corner of the cpu board (when looking
at the front of the radio) on the back of the front panel, there are a
couple of zero ohm resistors (one black band) and eight pads. I
numbered them 1-8 starting from the location of the + sign on the cpu
board. The letters that these jumper spots are designated with were
printed on the other side of the PC board (facing towards the front of
the radio). 1 means zero ohm resistor present, 0 means no connection.
+ 1 2 3 4 5 6 7 8
0 1 0 0 1 1 0 1
C E G A D E F B
I noticed that the spacing of these jumper pads was standard .10" dip
spacing, although the spacing between the two pads in each set was much
less.
Using a bunch of wires cut off of spare resistors, I vertically mounted
a dip switch on the cpu board, which makes it easily accessible by
removing the top cover. This was not very much fun to do.
By playing with the radio and flipping switches for a while, I figured
out what some of the switches/jumpers do. They are all worded as to
what they do when they are on/shorted.
1) Disable 144Mhz out of band receive.
2) Disable 350Mhz receive (selected by holding func and pressing up
while on the 2m side of the radio- func-down to disable)
3) Disable 440Mhz out of band receive.
3) Disable 800Mhz receive (selected by holding func and pressing up
while on the 70cm side of the radio- func-down to disable)
I have not be able to figure out what jumpers 5-8 do.
As shipped, the only jumper that enables extra "features" that was not
enabled seems to be the 350Mhz receive. I cannot verify that it works
anyway, since I can't find much to listen to in 350Mhz.
When the 2m side of the radio is tuned out of band to the aircraft
region, an extra decimal point will light up in the display, indicating
AM demodulation. This may be manually toggled in the 2m band by holding
func and pressing set.
As near as I can tell, the 800Mhz receive doesn't work (compared to a
scanner) However, I have heard rumors of an 800Mhz antenna jack mod,
which is perhaps needed to get any reception at all.
Any information on what jumpers/switches 5-8 do would be appreciated, as
well as information on how to enable the cross-band repeat and cloning
features that the radio was advertised with in the HRO catalog.
David C. Donley
KD6ACL
dd...@andrew.cmu.edu (until August 17th)
Mark S. Whitsitt, N5RJF
[deletia]
>
>Any information on what jumpers/switches 5-8 do would be appreciated, as
>well as information on how to enable the cross-band repeat and cloning
> ^^^^^^^
>features that the radio was advertised with in the HRO catalog.
>
> David C. Donley
> KD6ACL
> dd...@andrew.cmu.edu (until August 17th)
>
What exactly is meant by 'cloning features'???
BTW, I am glad to see more people out there getting this radio. Its been about
a year and 1/2 since I heard about it and just recently have I seen discussion
about this rig on Usenet.
(Hoping to get a Std C5608DA soon)
Mark S. Whitsitt, N5RJF Texas A&M University, Dept of Biochemistry
Internet: mwhi...@tamu.edu College Station, Tx. 77843-2128
AMPRnet: n5...@n5rjf.ampr.org (409) 845-0832
Packet/APLINK: N5RJF @ KE5HE.TX.USA.NA
David C. Donley
Standard C5608DA X-band.. by Mark S. Whitsitt@bioch.t
> From: whit...@bioch.tamu.edu (Mark S. Whitsitt, N5RJF)
> Subject: Re: Standard C5608DA X-band repeat?
> Date: 19 Jul 1993 10:10 CST
>
> [deletia]
> What exactly is meant by 'cloning features'???
>
> Mark S. Whitsitt, N5RJF Texas A&M University, Dept of Biochemistry
> Internet: mwhi...@tamu.edu College Station, Tx. 77843-2128
> AMPRnet: n5...@n5rjf.ampr.org (409) 845-0832
> Packet/APLINK: N5RJF @ KE5HE.TX.USA.NA
>
The cloning feature allows two radios to duplicate their memory contents
via DTMF over the air (hopefully at low power into a dummy load)
All the Standard handhelds seem to have this feature.
David Donley
KD6ACL
dd...@andrew.cmu.edu (until Aug. 17)
David C. Donley
Standard C5608DA X-band.. by Mark S. Whitsitt@bioch.t
>
been abou
> t
> a year and 1/2 since I heard about it and just recently have I seen
discussion
>
> about this rig on Usenet.
>
> (Hoping to get a Std C5608DA soon)
>
> Mark S. Whitsitt, N5RJF Texas A&M University, Dept of Biochemistry
> Internet: mwhi...@tamu.edu College Station, Tx. 77843-2128
> AMPRnet: n5...@n5rjf.ampr.org (409) 845-0832
> Packet/APLINK: N5RJF @ KE5HE.TX.USA.NA
>
schematic, I am very impressed with many of the design features. I
don't know how many of these features are standard in every VHF/UHF
mobile...
The C5608 has:
Temperature Compensated synth crystal (oven)
Power saving LEDs instead of incandescent lights are used for all
display lighting. This has the effect of reducing the
Standard's standby power level to a fairly high 700-800Ma, although I
suppose after the TCXO warms up, that will go down...
Overvoltage protection- all power is controlled by the CPU, and the
CPU's power is controled by a circuit that disables it if an input
voltage >18V is detected.
Real TX Power meters that actually measure the output power rather
than just being told by the CPU to light up in response to whatever
power you selected.
The Real TX Power meter circuit is fed back into the PA bias and
regulates the output power levels.
Genuine SWR sensing RF PA output protection circuitry.
Good power distribution system. (Lots and lots of regulators)
Included DTMF encoders/decoders (one of each, for each band)
Included CTCSS encoders/decoders (one of each, for each band)
The CTCSS decoder is very good. It doesn't occasionally blast
static when the squelch is all the way down like some do.
Crystal BPFs used in IF stages.
Also, the 2m and 440Mhz bands use different IF frequencies, reducing
the possibility of the receivers' IF freqs interfering with each other.
Selectivity is speced as -6 dB for 12KHz or higher,
-60 dB for 24KHz or higher.
I do not have specs to compare these to, and really couldn't say if
they are good or not. I certainly have no complaint about the
receiver's operation.
Of course, I can't forget to mention Standard's fairly well-know and
seemingly arbitrarily precise (but good) .158uV sensitivity (12dB SINad)
David Donley
KD6ACL
dd...@cmu.andrew.cmu.edu (until Aug. 17)
Disclaimer: I don't work for Standard, I just like their equipment
and wonder why it still works after what I do to it.
Mark S. Whitsitt, N5RJF
>I recently bought a Standard C5608DA Twin Bander Mobile rig. The
>advertising for this rig says it has a crossband repeat mode and a
>cloning capability but the owner's manual gives no mention of these
>cababilities. Can anybody shed some light on these and any other hidden
>features or modifications? Your help is appreciated.
>
>73
>Bruce
I called Standard and talked to Roger Wayman. He said that 1) there is no
cloning function on the C5608DA as there are on the HT's, and 2) you activate
the cross-band repeat by pressing the 144 and 450 buttons simultaneously,
regardless of which band is main band. I didn't ask about any other possible
mods, but I assume it is MARS/CAP modifiable.
73