Snap, i have the RM Italy 505v and also run it from the 50 amp supply with no problems, it's definitely enough to run the linear and a low watt rig at the same time.. i think my linear and a 4 watt radio running it comes to around 40 amps so i have 10 amps spare.
Ive been working pal so I've really not had much chance to get on the radio in the late evening.. work work and more work, i think it's that time of year.
The Lanzarote was funny, he was from Wales near me, i thought there was local skip coming in lol.. mind you as i said in the video i was half asleep 😂😂🤣
Wow, that's a nice Power Supply. I really appreciate your sharing. That is what I am looking at now. My big one is about 25 years old. I need to upgrade etc. Thanks Glenn
Hi Drew.. 25 years.. crikey that's certainly served you well, that will be a linear power supply, they don't make them how they used to.. what's the amps on that one.
@@DeltaXray444 Yes it has and is still going strong. I have a few but the one that got the most use as far as radios is a Pyramid gold series that does about 25 amps. Works great for radios etc and will handle most and a bunch of other stuff.
I eventually bought a 100 amp.. it cost me a fair amount because it was variable and a proper bench testing supply.. and yes you are correct a 60 amp takes too much strain and overheats very fast the 703 will suck the life out of a 60 amp drawing around 54 amps with the linear on full power . A 50 amp is totally out of the question..
Hi, for my RM 703 linear amplifier, good clean amplifier, don't over drive it,, ,,,, ,60 amp minimum power supply is better, ,,,,,, good for CB radio,,,,, but now I have a Acom 1500,big boys amplifier,,,,,,,, good reviews,,,,,,, 73 from Rotterdam
Hi, yes it's very clean across 10-11-12 meters.. the 703 only covers 25-30 mhz. I follow your channel on RUclips and have seen your nice linear.. I have two benches one for 11 meters and one for my amateur radio set up, on my ham bench i have an Ameritron 1010 linear.
@@DeltaXray444 I was sorry to see the Rm 703 go, but as you say it is limited☹,more for 27.555 than other frequencies, 🤔,keep up the good work,,,73 from Rotterdam 👍
For that sort of money for a 60amp psu is good aslong as it lasts well but Amsure your have warranty with it being new , weldone on the contacts also glen , I need too change the fan in my 60amp psu at one stage as sounds like a jet
Hi Darren.. Thanks for the compliment on the contacts I'm really struggling in my location for propagation on all bands it seems many stations have much better conditions and are getting some awesome contacts.. i did look around for some time and some of these psu's are very expensive, if you put the name Kenwood on the front of one of these switch modes they ask around £400, i guess they all work the same at the end of the day.. i have these same models but with other names like Qje and Jetfon in both 30 & 50 amp and i have had no problems at all, apart from one 30 amp i accidentally overloaded but that was my own fault, and after i overloaded it the fan on that one kicked in every time there was a current drain when i keyed up, you probably heard it on some of my previous videos.. anyway i fixed that one and it's been fine ever since.. But yes they come with a guarantee for a year so if anything went wrong it's covered, for the price they are definitely a good buy, i didn't think they would be this cheap either coming from Martin Lynch's and they have a good reputation for radio equipment as you well know. Radioworld have a 60 amp coming in next week at £124.95 so that's a bargain.. I will reiterate what i said in the video i have never heard of anyone who has had a problem with these supplies regardless of the name on the front.. the build quality is excellent and they run virtually silent.. enjoy your weekend, stay safe..
Oh wow that's expensive but again a lot of radio gear has gone up in price like antennas and radios, my friend in America just bought the 50 amp from Martin lynch for £159.99 free postage.
mine runs silent but i have seen others who say the fan runs on theres too.. no idea why.. i would speak to the company who sold it to you they may have some advice. i doubt it is faulty as others say its not a problem ..but a warm enviriment may trigger the thermo to switch on
@@DeltaXray444 I got mine from MartinLynch&Sons also and they told me the manufacturer said that its normal . If I was near the store I would of cherry-picked a quiet one . I took the top off last night and it became very quiet so I'm not sure whats going on . lol ...
I have a 503 and im looking at the 703. I run a hifi set up with a modified radio as well as rack gear. I have used a switching power supply (30 amp)for the 503 and did notice a small hum and not as clear audio as i would like. Not enough to really notice if i were using a regular mic without the rack. So I Purchased a 40 amp regulated power supply and that all went away and had cleaner sounding audio. Do you think some switching power supplys are better than others? Also great video, you answered a lot of questions i have had.
Hi, I have used many of these types of switching power supplies and never had a problem with any of them, also with other people who have used them they all say they have had no issues either.. I can understand some people may get lamination rattle (hum) buts that's usually down to running a radio and small amplifier on the PSU at the same time and overloading it a little too much.. On my bench I run five at the same time for various equipment between 30 amp and 60amp and get very little noise even when they are all switched on I never really hear them.. As for some being better than others, from those I use although identical but just with a different brand name I also never had any issues or problems with any, they are very stable and very reliable.. A 30 amp will run a 503 with ease and have a little headroom to keep the PSU stable and working well with very little overheating of the PSU .. However I did notice when running the 703 at full output power I had to increase the voltage to 15 volts instead of 13.8 as on transmit the 703 works better with a little more juice and gives the linear it's value output of near to 500watts on FM and the full beans on SSB with ease.. On a 60 amp PSU the 703 will suck around 55 amps so that little extra 5 amps is a little headroom but if the linear is run heavy for ten minutes on FM the PSU's fan will kick in often to cool it down.. i stepped up to a 150 amp PSU which was very expensive but at the same time it gave me zero worries about overloading a PSU.. Im Not sure if I covered everything you mentioned but please correct me if I misunderstood anything out of context.. One more thing running the rack and getting RF feedback of any kind I would suggest using ferrite ring chokes or ferrite clamps along the speaker wires they go a long way to reduce any interference you may get. Again thank you and a happy new year Also always make sure when using a linear to keep all the jumpers of equal length which gives a much better impedance match thus reducing the swr with no spiking.. I would imagine running a 40 amp PSU with the amplifier for the rack system would put less strain and also give you a little more headroom as increasing the audio sound to the speakers will drain more amps from the PSU so it's always better to have that few extra amps..
Hi Glenn, what l have noticed when travelling on the trams is that when they go past your house they always seem to slow down? lol 😆 do you have any thoughts 👍 as always Glenn keep up your good work Lee.
I found this online Lee, so railway tracks do help me get out.. It has been a long established fact that HF radio signals can travel over vast distances when transmitted next to or adjacent to railway lines/tracks. Radio propagation or RF propagation and the distances over which the signals can propagate thousands of miles depending on the interconnected railway network, Some HF radio signals can travel or propagate around the globe, whereas other radio signals may only propagate over much shorter distances. Radio propagation, or the way in which radio signals travel along a railway network can be an interesting topic to study. RF propagation is a particularly important topic for any participate into radio communications. The radio propagation will depend on many factors, and the choice of the radio frequency will determine many aspects of radio propagation for the radio communications system, Usually lower HF transmissions between 4kHz to 55 MHz will help radio signals propagate further than higher UHF or VHF signals.
50A version is 40A continuous/50A peak, has 3 side vents, and weighs 2.5Kg. 60A version is 60A continuous/62A peak, has 5 side vents and weighs 4.2Kg. Both have the same exterior dimensions.
I bought it from Martin Lynch radio ham shop and told him I needed a 60 amp power supply for my needs, he told me this was a straight continuous 60amp supply and wouldn't cope with a heavier load as it doesn't surge 🤷🏼♂️
![NLE Choppa - Or What ft. 41 (Orchestra Mix) [Official Music Video]](http://i.ytimg.com/vi/biOFASEgSOM/mqdefault.jpg)
Awesome to be part of the selected few people to receive a recent video many thanks Glenn
Hi Stephen, you are welcome and thank you for your kind words my good friend, stay blessed.
I just got the 50 amp version for my RM Italy KL503 and it works excellent, a great buy!! Cheers and 73's!!
Snap, i have the RM Italy 505v and also run it from the 50 amp supply with no problems, it's definitely enough to run the linear and a low watt rig at the same time.. i think my linear and a 4 watt radio running it comes to around 40 amps so i have 10 amps spare.
Very. Nice
Thanks Garry, hope to see you back soon buddy, take things easy, one day at a time 🙂
Been shouting your call sign most nights on the off chance u may be on in the wee hour
Ive been working pal so I've really not had much chance to get on the radio in the late evening.. work work and more work, i think it's that time of year.
Enjoying your videos! Thank you!
Thanks Gazza, Drew just bought one of these psu's he will really like it. Thanks for watching.
@@DeltaXray444 Is that what he is going to run his toaster on?
@@GazzaJollyRoger8152 yes it's today it arrives in the post
Great contacts friend
The Lanzarote was funny, he was from Wales near me, i thought there was local skip coming in lol.. mind you as i said in the video i was half asleep 😂😂🤣
@@DeltaXray444 Lol been there and done that.
@@cbradioghosttalk1986 😂😂🤣
Nice setup from 112 Southern Illinois
Thank you for the compliment it is much appreciated .. 26DX444 Nottingham UK
Wow, that's a nice Power Supply. I really appreciate your sharing. That is what I am looking at now. My big one is about 25 years old. I need to upgrade etc. Thanks Glenn
Hi Drew.. 25 years.. crikey that's certainly served you well, that will be a linear power supply, they don't make them how they used to.. what's the amps on that one.
@@DeltaXray444 Yes it has and is still going strong. I have a few but the one that got the most use as far as radios is a Pyramid gold series that does about 25 amps. Works great for radios etc and will handle most and a bunch of other stuff.
That's the beauty of electronics it can all be fixed if they ever blow a cap.. I'm sure you will get many more years of use out of it.
Good video. Just to set the record straight a 100 amp power supply should be used. Even my 75 amp power supply strains to run the 703
I eventually bought a 100 amp.. it cost me a fair amount because it was variable and a proper bench testing supply.. and yes you are correct a 60 amp takes too much strain and overheats very fast the 703 will suck the life out of a 60 amp drawing around 54 amps with the linear on full power . A 50 amp is totally out of the question..
My rm 503 HD runs my 50amp power supply to its limit and I have it running at 14.2 volts.
A 30amp supply should be able to run a 503 no problem even at 14.2.. I have run a RM 505v on a 30amp many times without any issues.
I think you need a bigger boat, Glenn. That's a lot of radios lol
Stop peeping at my radio's Mel or I'll row my canoe across the pond to Florida and put my golden screwdriver where the sun doesn't shine 😂😂
Hi, for my RM 703 linear amplifier, good clean amplifier, don't over drive it,, ,,,, ,60 amp minimum power supply is better, ,,,,,, good for CB radio,,,,, but now I have a Acom 1500,big boys amplifier,,,,,,,, good reviews,,,,,,, 73 from Rotterdam
Hi, yes it's very clean across 10-11-12 meters.. the 703 only covers 25-30 mhz. I follow your channel on RUclips and have seen your nice linear.. I have two benches one for 11 meters and one for my amateur radio set up, on my ham bench i have an Ameritron 1010 linear.
@@DeltaXray444 I was sorry to see the Rm 703 go, but as you say it is limited☹,more for 27.555 than other frequencies, 🤔,keep up the good work,,,73 from Rotterdam 👍
How you have a hood day Glenn my friend!🔥☠🤘
Hi John, you too my rock legend, when's you're next world tour 🤘🤘🤘😂
For that sort of money for a 60amp psu is good aslong as it lasts well but Amsure your have warranty with it being new , weldone on the contacts also glen ,
I need too change the fan in my 60amp psu at one stage as sounds like a jet
Hi Darren.. Thanks for the compliment on the contacts I'm really struggling in my location for propagation on all bands it seems many stations have much better conditions and are getting some awesome contacts..
i did look around for some time and some of these psu's are very expensive, if you put the name Kenwood on the front of one of these switch modes they ask around £400, i guess they all work the same at the end of the day.. i have these same models but with other names like Qje and Jetfon in both 30 & 50 amp and i have had no problems at all, apart from one 30 amp i accidentally overloaded but that was my own fault, and after i overloaded it the fan on that one kicked in every time there was a current drain when i keyed up, you probably heard it on some of my previous videos.. anyway i fixed that one and it's been fine ever since..
But yes they come with a guarantee for a year so if anything went wrong it's covered, for the price they are definitely a good buy, i didn't think they would be this cheap either coming from Martin Lynch's and they have a good reputation for radio equipment as you well know.
Radioworld have a 60 amp coming in next week at £124.95 so that's a bargain..
I will reiterate what i said in the video i have never heard of anyone who has had a problem with these supplies regardless of the name on the front.. the build quality is excellent and they run virtually silent.. enjoy your weekend, stay safe..
I just ordered the same psu , they have gone up to £ 200 now ...
Oh wow that's expensive but again a lot of radio gear has gone up in price like antennas and radios, my friend in America just bought the 50 amp from Martin lynch for £159.99 free postage.
mine runs silent but i have seen others who say the fan runs on theres too.. no idea why.. i would speak to the company who sold it to you they may have some advice. i doubt it is faulty as others say its not a problem ..but a warm enviriment may trigger the thermo to switch on
@@DeltaXray444 I got mine from MartinLynch&Sons also and they told me the manufacturer said that its normal . If I was near the store I would of cherry-picked a quiet one . I took the top off last night and it became very quiet so I'm not sure whats going on . lol ...
@@Fluxtime451 haha that's really strange, if mine starts to come on I'll take the lid off, thanks for the heads up lol😂
I have a 503 and im looking at the 703. I run a hifi set up with a modified radio as well as rack gear. I have used a switching power supply (30 amp)for the 503 and did notice a small hum and not as clear audio as i would like. Not enough to really notice if i were using a regular mic without the rack. So I Purchased a 40 amp regulated power supply and that all went away and had cleaner sounding audio. Do you think some switching power supplys are better than others? Also great video, you answered a lot of questions i have had.
Hi, I have used many of these types of switching power supplies and never had a problem with any of them, also with other people who have used them they all say they have had no issues either.. I can understand some people may get lamination rattle (hum) buts that's usually down to running a radio and small amplifier on the PSU at the same time and overloading it a little too much..
On my bench I run five at the same time for various equipment between 30 amp and 60amp and get very little noise even when they are all switched on I never really hear them..
As for some being better than others, from those I use although identical but just with a different brand name I also never had any issues or problems with any, they are very stable and very reliable..
A 30 amp will run a 503 with ease and have a little headroom to keep the PSU stable and working well with very little overheating of the PSU ..
However I did notice when running the 703 at full output power I had to increase the voltage to 15 volts instead of 13.8 as on transmit the 703 works better with a little more juice and gives the linear it's value output of near to 500watts on FM and the full beans on SSB with ease..
On a 60 amp PSU the 703 will suck around 55 amps so that little extra 5 amps is a little headroom but if the linear is run heavy for ten minutes on FM the PSU's fan will kick in often to cool it down.. i stepped up to a 150 amp PSU which was very expensive but at the same time it gave me zero worries about overloading a PSU..
Im Not sure if I covered everything you mentioned but please correct me if I misunderstood anything out of context..
One more thing running the rack and getting RF feedback of any kind I would suggest using ferrite ring chokes or ferrite clamps along the speaker wires they go a long way to reduce any interference you may get.
Again thank you and a happy new year
Also always make sure when using a linear to keep all the jumpers of equal length which gives a much better impedance match thus reducing the swr with no spiking..
I would imagine running a 40 amp PSU with the amplifier for the rack system would put less strain and also give you a little more headroom as increasing the audio sound to the speakers will drain more amps from the PSU so it's always better to have that few extra amps..
@@DeltaXray444 Wow thank you for this quick response and advise. You have help me make my decision. From the Great Lakes in Illinois, thank you.
Hi Glenn, what l have noticed when travelling on the trams is that when they go past your house they always seem to slow down? lol 😆 do you have any thoughts 👍 as always Glenn keep up your good work Lee.
😂😂😂 I think those railway line help me get out but can't be certain, I'm tapping into them to boost my output power 😂😂😂
I found this online Lee, so railway tracks do help me get out..
It has been a long established fact that HF radio signals can travel over vast distances when transmitted next to or adjacent to railway lines/tracks.
Radio propagation or RF propagation and the distances over which the signals can propagate thousands of miles depending on the interconnected railway network, Some HF radio signals can travel or propagate around the globe, whereas other radio signals may only propagate over much shorter distances.
Radio propagation, or the way in which radio signals travel along a railway network can be an interesting topic to study. RF propagation is a particularly important topic for any participate into radio communications.
The radio propagation will depend on many factors, and the choice of the radio frequency will determine many aspects of radio propagation for the radio communications system, Usually lower HF transmissions between 4kHz to 55 MHz will help radio signals propagate further than higher UHF or VHF signals.
100 for the 703 sounds better
I agree, although the 60 amp will run it only just it's still not comfortable, but the 100 amp will most definitely run it with ease.
It is not. A 60amp. It is 50amp...
What is a 50 amp ?
50A version is 40A continuous/50A peak, has 3 side vents, and weighs 2.5Kg.
60A version is 60A continuous/62A peak, has 5 side vents and weighs 4.2Kg.
Both have the same exterior dimensions.
I bought it from Martin Lynch radio ham shop and told him I needed a 60 amp power supply for my needs, he told me this was a straight continuous 60amp supply and wouldn't cope with a heavier load as it doesn't surge 🤷🏼♂️