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PG XL Power On Question
I have 4 transceivers and 4 amplifiers in the radio room at 4 operating positions. For all 4 transceivers and 3 amplifiers I can turn them on/off from the front panel. For those of us using racks or custom cabinets this is a pain. Help me, I hope the rear switch isn't the only way to turn the PG XL on/off.
HCampbell WB4IVF Member ✭✭For the time being I leave the switch on and just plug/unplug the cord from the wall outlet. In my case it's a lesser pain. In the near future I'll add an inline power switch at my operating position. However, during lightning season I'll continue to unplug the amp when not in use. Others may leave the amp on full time in standby - in that mode it draws very little power.
Some more ideas using relays:https://groups.io/g/FlexRadioSmartSDR/topic/pgxl_remote_operation/23755462?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,23755462
Michael Coslo Member ✭✭Have thesame issue with a couple KPA-1500 amp Power supplies I think that present day style dictates that power switches be placed in an area that is inconvenient. 8^) For me, Access to the switch involves laying on the floor and crawling under the counter.
Just as Howard does, I just plug and unplug the power supply directly.0
Nothing like having a $7000 amp that you have to use the line cord as the power switch
Its always the simple things that get missed.
The KPA-1500 has a separate power supply which can be placed out of the way. Mine sits on a lower shelf. I never have to turn it off with the rear switch. Just shut the amp itself off. Only time I shut off the supply is when we have a power outage or t storms then I unplug it.
I did as Howard did, I used a 110V relay coil 3 pole Relay and switch the Amp OFF and ON with my Web based Power Switch not because the Power switch is on the back BUT some times the AMP needs to have a power reboot if you have a firmware update, or if your network goes down and the AMP looses it's IP or the Amp application and Radio just stops talking to the Radio.
I run my station remotely and for me this is the Ideal way of running my station all remote.
Interesting. I had assumed the STANDBY/OPERATE button on the front panel also powered up the PG-XL. I'm guessing the PG-XL's rear mounted power switch was chosen as a cost savings measure? Reaching around the rear of the amplifier or having to rig up a remote switch arrangement certainly doesn't sound convenient. Does anyone know if this is the final power switch design?
I like the way Alpha did this on my 87A, two heavy duty switches on the front panel, one for on and the other for off.
I seriously doubt the design of a front power switch on the PG-XL was simply "missed."
HCampbell WB4IVF Member ✭✭
Below is Ranko/4O3A’s explanation of the rationale.
PG XL main power supply is OFF when in STBY mode. 24V AUX power supply remains ON and LAN/display is powered. STBY/OPERATE will be controllable from SmartSDR directly, and it's a way to switch PG XL ON/OFF.
I hope it helps.
Thank you. I didn't see this in the documentation. When I go to Standby and the entire front panel is still "ON" I assumed the amplifier was "ON".
Matt (K0KB) Member ✭✭DPST 30A relay with a 110v coil. Tripped by my 110v wifi switch. The relay I used: https://www.amazon.com/gp/product/B00...1
Any chance of adding an optional screen saver to the front panel display. There have been a lot of display panel issues in the industry in recent years. Some of the early ICOM IC-7610 had defective displays that went bad with use. The design wherein the rest of the amplifier is powered down while in Standby mode is interesting but I am bothered by the fact that the screen stays on. It is a touch screen so a touch could turn it back on.
Thanks for considering my suggestion.
k3Tim Member ✭✭✭Reminiscent of the Max headroom show where TV sets weren't allowed (by law) to have an off switch.
k3tim / 70
I'm sure they put the Mains power switch on the back to give the amp a more clean, less cluttered look.
Unfortunately that makes a simple thing like turning off the mains power a bit more of a pain in the ****.
Because the PGXL is network/IP capable it needs some power for the network part of the amp to be on all the time for remote access.0
Johan _ SE3X Member ✭✭Can't say it's a surprise, not to me at least. Having the ACOM 1000 and SPE Expert 1K-Fa, both with their main AC switch on the back of the amp. Nothing new with the PG XL having it in the same place. I don't like it either ...but seems to be the way the manufacturer places the switch today.0
Is there any difference between using the PG-XL's rear mounted on/off switch, compared leaving the switch on and switch the power on to the amplifier with a 240vac Contactor?
My concern is the possible voltage spikes that a 240v Contactor might generate into the Amplifier. Is this a concern, and if so, what can be done about it?
The chassis switch is just a DPST switch in the AC Line, the same as a External Power relay.
Spikes come from when the Power Switch doesn't make a HARD quick connection and to me a external contactor (Relay) is MUCH cleaner then a manual operated switch, afterall how many times have you heard a sizzle when you turn on a high current AC Power switch.
If your talking about the surge like a DC relay produces on the coil this just doesn't come into play on the AC side of the Realy.
Actually I haven't heard a sizzle in an on/off switch since my Collins days. In modern equipment it wouldn't surprise me if internal components are used to absorb the surge components, prior to voltage spikes reach delicate computer components and such. In my case I added a 240v Surge Protector in parallel with the 3-pole Contactor and found my PG-XL transitions to its 'on' state much more smoothly than without it.
Sergey KN7K Member ✭✭✭Connect Wemo switch to the 120v power wires - red connectors on image above and you can turn PGXL ON/OFF from Wemo application on your phone. I use it for my Espresso mashine
Actually like this idea with relay above.
If i hide my PGXL behind my desk to reduce the noise I may build it.
Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator adminMy PGXL is remote, so I have a remote 240AC relay on the AC line that is controlled by 12V relay. I usually leave it on 7x24 unless there is a Lightning issue.
When this switch is on and the amp is Soft off, there is a 24V power supply that remains powered in order to allow it to respond to software commands as Ranko said.
There is really no difference in the mechanics of the DC controlled remote relay or the mechanical switch on the back. Both have moving leaves/contacts to make contact.
If you are concerned about voltage spikes, they will come from external sources well beyond your AC switch or DC Contactor.
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