Re: Dallas Lankford AGC Hang MOD for RA 6790
Bruno,
Dallas's AGC Hang mod involved changing several resistors on the A4 board to alter the Hang times and adding a series R and diode combination to shorten the attack time.? It is really a matter of personal preferences.? I don't have an electronic copy of it.
I've no idea what Gary's circuit does but it is only applicable to a GM fitted with the A1 RF amp module (or a 1792 of course).
73 - Dan - ac6ao
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Re: Dallas Lankford AGC Hang MOD for RA 6790
Hi, There is no capacitor between pin 6 and ground. Does it work using parasitic capcitance ? 73, Bruno F5CCA ----- Mail original ----- De: gewingerd@... ?: [email protected]Envoy¨¦: Vendredi 24 Mai 2024 05:52:52 Objet: Re: [RacalRadio] Dallas Lankford AGC Hang MOD for RA 6790 Please see attached, the device is added to the RF AMP/Mute/ Input Filter A1A1 on the RA6790/GM-13 Gary
---------- Original Message ---------- From: "Graham" <g0nbd@...> To: [email protected] Subject: [RacalRadio] Dallas Lankford AGC Hang MOD for RA 6790 Date: Thu, 23 May 2024 13:26:50 -0700 Dallas Lankford AGC Hang MOD for RA 6790 Q Has anyone a copy of this modification ? Tnx-Graham G0NBD
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Re: Dallas Lankford AGC Hang MOD for RA 6790
Please see attached, the device is added to the RF AMP/Mute/ Input Filter A1A1 on the RA6790/GM-13
?
Gary
---------- Original Message ---------- From: "Graham" <g0nbd@...> To: [email protected]Subject: [RacalRadio] Dallas Lankford AGC Hang MOD for RA 6790 Date: Thu, 23 May 2024 13:26:50 -0700 Dallas Lankford AGC Hang MOD for RA 6790 Q Has anyone a copy of this modification ? Tnx-Graham G0NBD
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Dallas Lankford AGC Hang MOD for RA 6790
Dallas Lankford AGC Hang MOD for RA 6790
Q Has anyone a copy of this modification ?
Tnx-Graham
G0NBD
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I cannot answer that question, but someone may ?
On Wednesday, 22 May 2024, 09:19:39 GMT+1, Martin Sole <hs0zed@...> wrote:
Will the X and the XH be similar but
for the synth module?
Or is there more... :)
Martin, HS0ZED
On 22/05/2024 11:14, Stuart Mckinnon
via groups.io wrote:
The TRA 931X is not a Hopper,
the TRA 931XH is the Hopper
The one you show in the
picture is a TRA 931P (Programmable version)
On Wednesday, 22 May 2024, 07:12:41 GMT+1, Martin Sole
<hs0zed@...> wrote:
I think you can find the TRA931XH manual in the
files section of this group on groups.io. Should be
pretty much what you have. Does it have the hopping
function?
Mine also has the four BNC connectors on the front
panel. The manual explains these. See also the picture
below from a brochure, also in the files section.
![]()
Regards
Martin, HS0ZED
On
22/05/2024 02:42, Dave via groups.io wrote:
Hello everyone,
I found a TRA-931X at Hamvention last week, s/n
14643.
No screws to hold it in the case and no battery
pack.
Opening it up it looks great inside at first glance
with no signs of trouble.
I see that it has a circuit board above the T/R
relay which my 931 does not.
Also on the front it has two more BNC connectors.
I do not have the manual for the 931X version yet to
let me know what the differences are.
Can anyone give me an idea of what I have here?
Cosmetically it is a bit rough and dirty looking
with some damage.
Upon power up I have 18 watts on 21.260 in the tune
position. I have not tried any other band.
The frequency backlights all work with a Green
color.
The audio noise is there but a bit low and there are
louder crackle noises that do not change with
changing the volume control.
When I input a signal from a service monitor on
21.260 AM, CW or SSB I do not hear anything.
Any thoughts ???
Thanks much,
Dave KC3AM
|
Will the X and the XH be similar but
for the synth module?
Or is there more... :)
Martin, HS0ZED
On 22/05/2024 11:14, Stuart Mckinnon
via groups.io wrote:
toggle quoted message
Show quoted text
The TRA 931X is not a Hopper,
the TRA 931XH is the Hopper
The one you show in the
picture is a TRA 931P (Programmable version)
On Wednesday, 22 May 2024, 07:12:41 GMT+1, Martin Sole
<hs0zed@...> wrote:
I think you can find the TRA931XH manual in the
files section of this group on groups.io. Should be
pretty much what you have. Does it have the hopping
function?
Mine also has the four BNC connectors on the front
panel. The manual explains these. See also the picture
below from a brochure, also in the files section.
Regards
Martin, HS0ZED
On
22/05/2024 02:42, Dave via groups.io wrote:
Hello everyone,
I found a TRA-931X at Hamvention last week, s/n
14643.
No screws to hold it in the case and no battery
pack.
Opening it up it looks great inside at first glance
with no signs of trouble.
I see that it has a circuit board above the T/R
relay which my 931 does not.
Also on the front it has two more BNC connectors.
I do not have the manual for the 931X version yet to
let me know what the differences are.
Can anyone give me an idea of what I have here?
Cosmetically it is a bit rough and dirty looking
with some damage.
Upon power up I have 18 watts on 21.260 in the tune
position. I have not tried any other band.
The frequency backlights all work with a Green
color.
The audio noise is there but a bit low and there are
louder crackle noises that do not change with
changing the volume control.
When I input a signal from a service monitor on
21.260 AM, CW or SSB I do not hear anything.
Any thoughts ???
Thanks much,
Dave KC3AM
|
The TRA 931X is not a Hopper, the TRA 931XH is the Hopper The one you show in the picture is a TRA 931P (Programmable version)
On Wednesday, 22 May 2024, 07:12:41 GMT+1, Martin Sole <hs0zed@...> wrote:
I think you can find the TRA931XH manual in the files section of
this group on groups.io. Should be pretty much what you have. Does
it have the hopping function?
Mine also has the four BNC connectors on the front panel. The manual
explains these. See also the picture below from a brochure, also in
the files section.
Regards
Martin, HS0ZED
On 22/05/2024 02:42, Dave via groups.io
wrote:
Hello
everyone,
I found a TRA-931X at Hamvention last week, s/n 14643.
No screws to hold it in the case and no battery pack.
Opening it up it looks great inside at first glance with no signs
of trouble.
I see that it has a circuit board above the T/R relay which my 931
does not.
Also on the front it has two more BNC connectors.
I do not have the manual for the 931X version yet to let me know
what the differences are.
Can anyone give me an idea of what I have here?
Cosmetically it is a bit rough and dirty looking with some damage.
Upon power up I have 18 watts on 21.260 in the tune position. I
have not tried any other band.
The frequency backlights all work with a Green color.
The audio noise is there but a bit low and there are louder
crackle noises that do not change with changing the volume
control.
When I input a signal from a service monitor on 21.260 AM, CW or
SSB I do not hear anything.
Any thoughts ???
Thanks much,
Dave KC3AM
|
I think you can find the TRA931XH manual in the files section of
this group on groups.io. Should be pretty much what you have. Does
it have the hopping function?
Mine also has the four BNC connectors on the front panel. The manual
explains these. See also the picture below from a brochure, also in
the files section.
Regards
Martin, HS0ZED
On 22/05/2024 02:42, Dave via groups.io
wrote:
toggle quoted message
Show quoted text
Hello
everyone,
I found a TRA-931X at Hamvention last week, s/n 14643.
No screws to hold it in the case and no battery pack.
Opening it up it looks great inside at first glance with no signs
of trouble.
I see that it has a circuit board above the T/R relay which my 931
does not.
Also on the front it has two more BNC connectors.
I do not have the manual for the 931X version yet to let me know
what the differences are.
Can anyone give me an idea of what I have here?
Cosmetically it is a bit rough and dirty looking with some damage.
Upon power up I have 18 watts on 21.260 in the tune position. I
have not tried any other band.
The frequency backlights all work with a Green color.
The audio noise is there but a bit low and there are louder
crackle noises that do not change with changing the volume
control.
When I input a signal from a service monitor on 21.260 AM, CW or
SSB I do not hear anything.
Any thoughts ???
Thanks much,
Dave KC3AM
|
Dave:
?an incomplete response:
The TX/RX relay is often a problem point. Mine would receive but not tx due to a flakey relay.
P
|
Hello everyone,
I found a TRA-931X at Hamvention last week, s/n 14643.
No screws to hold it in the case and no battery pack.
Opening it up it looks great inside at first glance with no signs of trouble.
I see that it has a circuit board above the T/R relay which my 931 does not.
Also on the front it has two more BNC connectors.
I do not have the manual for the 931X version yet to let me know what the differences are.
Can anyone give me an idea of what I have here?
Cosmetically it is a bit rough and dirty looking with some damage.
Upon power up I have 18 watts on 21.260 in the tune position. I have not tried any other band.
The frequency backlights all work with a Green color.
The audio noise is there but a bit low and there are louder crackle noises that do not change with changing the volume control.
When I input a signal from a service monitor on 21.260 AM, CW or SSB I do not hear anything.
Any thoughts ???
Thanks much,
Dave KC3AM
|
Re: Racal Panther V software.
OK glad you sorted it.
--
Mike G8GYW
|
Re: Racal Panther V software.
Hi Mike - thanks for thinking of me. I have just managed to get SW3635 Versions 9 and 10, including the documentation. Best regards, Julian.
toggle quoted message
Show quoted text
On 21 May 2024, at 10:36, Stuart Mckinnon via groups.io <stuartjmckinnon@...> wrote:
?
rather amusing, I think they already know one another at a guess!
Stuart G0TBI
On Tuesday, 21 May 2024 at 10:30:08 BST, Mike <mail@...> wrote:
Hi Julian
A former Racal colleague, who also happens to be a neighbour, worked in Product Support for many years and he's still working on Panthers in his spare time.
I'm sure he will have this software. I will ask him later.
--
Mike G8GYW
|
Re: Racal Panther V software.
rather amusing, I think they already know one another at a guess!
Stuart G0TBI
On Tuesday, 21 May 2024 at 10:30:08 BST, Mike <mail@...> wrote:
Hi Julian
A former Racal colleague, who also happens to be a neighbour, worked in Product Support for many years and he's still working on Panthers in his spare time.
I'm sure he will have this software. I will ask him later.
--
Mike G8GYW
|
Re: Racal Panther V software.
Hi Julian
A former Racal colleague, who also happens to be a neighbour, worked in Product Support for many years and he's still working on Panthers in his spare time.
I'm sure he will have this software. I will ask him later.
--
Mike G8GYW
|
TRA3910 PA / PSU Module information
Hi group
I know it's a long shot, does anybody have a schematic of the Rear PA and PSU module for the TRA3910 Yeoman HF radio?
Kind regards
George
G8MAU
|
Racal Panther V software.
Does anyone out there in Racal land have a late copy of the Racal Panther V, EDR programming software¡..version 10 or above?
The Part Number is: SW3635
73¡¯²õ,
Julian Barnard.
|
Hi Jeff
I've emailed direct.
Regards
Dave g1jwg
|
Looking for a copy of the workshop manual or circuit diagram for the Racal MA4142? AAMTU? INITIATE UNIT.
If anyone can help ?
Jeff
G8XXI
|
Free for the cost of postage, 3 off the above plugs? 5965-99-901-4287.
Jeff??? G8XXI
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FOR SALE, VHF JAGUAR V.I.U RF AMPLIFIER BOARD.
complete but unable to test
Looking for ?60 or near offer
will be at thorpe camp this Sunday weather permitting.
Jeff
G8XXI
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Mike