kl203p- new version ?

The place to talk about specific radios, equipment and accessories. Do you prefer the latest generation of rigs and antennas or do you like the classics? Discuss it here!
User avatar
Mudslinger
Legend
Legend
Posts: 6746
Joined: 28 Jul 2010, 07:11
Location: Oxfordshire

Re: kl203p- new version ?

Post by Mudslinger » 13 Jan 2018, 20:03

I just run my fan from the power pack so that it is on all the time. It isn't any louder than the powerpack fan anyway. so it isn't an issue.
Mudslinger - Simon
26TM274
26CT612

There is no such thing as a Fidelity 1000 which is too good to scrap.

User avatar
gmham
Top Poster
Top Poster
Posts: 1796
Joined: 13 Aug 2009, 11:27
Call Sign: 108TM154

Re: kl203p- new version ?

Post by gmham » 13 Jan 2018, 20:14

Ok perfect thanks yep as you say don't think it's much off an issue and have ordered a supposedly " silent fan " anyway ? Might use hexagonal pillars to mount the fan just above the heat sink , anyone else done this .. ?
.... Icom IC7300 HF /6 mtr
Kenwood TR751e 2mtr ssb






108-TM-154 - John

User avatar
prettypolly
Radio Addict
Radio Addict
Posts: 920
Joined: 09 Jan 2013, 01:57
Call Sign: 26FB185

Re: kl203p- new version ?

Post by prettypolly » 14 Jan 2018, 18:45

4 blobs of blutack works well

User avatar
gmham
Top Poster
Top Poster
Posts: 1796
Joined: 13 Aug 2009, 11:27
Call Sign: 108TM154

Re: kl203p- new version ?

Post by gmham » 14 Jan 2018, 19:08

yep I know !!! just fancy doing it a more permanent way.. !
.... Icom IC7300 HF /6 mtr
Kenwood TR751e 2mtr ssb






108-TM-154 - John

User avatar
Mudslinger
Legend
Legend
Posts: 6746
Joined: 28 Jul 2010, 07:11
Location: Oxfordshire

Re: kl203p- new version ?

Post by Mudslinger » 14 Jan 2018, 19:52

I used a couple of cable ties around the fan and amp.

It has been ok for 4 years so must be quite permanent.
Mudslinger - Simon
26TM274
26CT612

There is no such thing as a Fidelity 1000 which is too good to scrap.

User avatar
gmham
Top Poster
Top Poster
Posts: 1796
Joined: 13 Aug 2009, 11:27
Call Sign: 108TM154

Re: kl203p- new version ?

Post by gmham » 14 Jan 2018, 22:27

Okay maybe permanent was the wrong word to use.. actually meant more professionally looking. !!

To be honest used the kl203 with the cable tie arrangement before and as you say does the job well. !!
.... Icom IC7300 HF /6 mtr
Kenwood TR751e 2mtr ssb






108-TM-154 - John

User avatar
Unit 148 Mobile
Super Member
Super Member
Posts: 110
Joined: 24 Sep 2010, 20:50
Location: London
Contact:

Re: kl203p- new version ?

Post by Unit 148 Mobile » 07 Feb 2018, 13:15

WA10,

I just read this thread through and you took the words out of my mouth re the 550 and I've never run one!

The 1407 datasheet says it all: https://www.mouser.com/ds/2/453/sd1407-13154.pdf so two do not equate to half a kilowatt or anywhere close, that is unless it's over-driven and you add all the harmonic content :-)

IMO the very best thing one can do with most all amplifiers and not just the RM's is to drive them with 50% of what the manufacturer states for drive.

You get better reliability, a cooler running amp and a cleaner signal through lower intermod distortion however you won't get the "Worked all Neighbors" award with a wide covering half the band.

RM would probably sell a lot fewer amplifiers if you adhered to the above.


Unit 148 Mobile

User avatar
ROTEL240
Super Member
Super Member
Posts: 381
Joined: 01 Dec 2012, 20:10

Re: kl203p- new version ?

Post by ROTEL240 » 07 Feb 2018, 23:01

prettypolly wrote:
14 Jan 2018, 18:45
4 blobs of blutack works well
works well for me also and stops any fan vibration on the linear..

User avatar
prettypolly
Radio Addict
Radio Addict
Posts: 920
Joined: 09 Jan 2013, 01:57
Call Sign: 26FB185

Re: kl203p- new version ?

Post by prettypolly » 08 Feb 2018, 01:55

Or big rubber bands OK as well

wa10
Top Poster
Top Poster
Posts: 1169
Joined: 19 Feb 2008, 00:37

Re: kl203p- new version ?

Post by wa10 » 08 Feb 2018, 02:38

148
Its more appealing to believe the amp makers impossible ratings when the truth sound much less impressive.

User avatar
Mitch
Super Member
Super Member
Posts: 359
Joined: 02 Nov 2012, 21:26
Location: Leicestershire UK

Re: kl203p- new version ?

Post by Mitch » 08 Feb 2018, 11:50

I've always believed that a linears power rating was the INPUT watts i.e. how much power it uses, so a 300W amp will take 21 amps or so at 13.8v. I wouldn't expect 300W out. Sounds more likely imho. The sales copywriters take the highest number for the ads, obviously, being sales people, they like the bigger numbers. I wouldn't expect any better than 40% efficiency either so it kinda fits for me.
The perfect face for radio.

User avatar
ghost123uk
Radio Addict
Radio Addict
Posts: 679
Joined: 19 Aug 2012, 13:46
Call Sign: 26TM953
Location: S. Cheshire

Re: kl203p- new version ?

Post by ghost123uk » 08 Feb 2018, 13:03

gmham wrote:
01 Jan 2018, 22:35
any idea what 10watts input would likely give out ?
ch25 wrote:
01 Jan 2018, 23:02
Square wave.
Image :thumbup:
John, on the S. Cheshire / N. Shropshire border. Muppet handle "Grey ghost" and on UK C25 most working days.
Don't just monitor, key up and talk, otherwise everyone thinks no one else is out there !!!

User avatar
andrew013
Top Poster
Top Poster
Posts: 1810
Joined: 17 Aug 2010, 12:41
Call Sign: 26AT013
Location: gateshead tyne and wear

Re: kl203p- new version ?

Post by andrew013 » 08 Feb 2018, 20:57

me and a mate run rm kl 500`s when the need arises his does 250 mine does 380 , tested off the same battery , radio , swr , meter and dummy load and we tested his first input power was 15 w, it was his battery so i dont know how charged it was , but i do know from my fully charged battery that still bubbles straight off the charger i get 450 plus out of mine for how long i dont know and all i did to mine was upgrade the power cable and fuse holder , brigded the 3 internal fuse holders and put 2 thicker cables on the board somewhere
and its not worth the while sticking 10 into a 203 its alot happier running with an input from 6to 8 watts or less if you want it to run cool
on air,tyne&wear,northumberland,durham,holy island,eu120+eu124 and anywhere from gateshead/north wales
scrap uk 40 give cbers L/M/Hcalling on 27.355/555 usb qsy 27.015 lsb/410 usb cb radio is for life not just for profits
i do cb radio not 11mtres,countrys worked 2015 with imax 2000 72

User avatar
ghost123uk
Radio Addict
Radio Addict
Posts: 679
Joined: 19 Aug 2012, 13:46
Call Sign: 26TM953
Location: S. Cheshire

Re: kl203p- new version ?

Post by ghost123uk » 10 Feb 2018, 12:15

Don't mess about Image

EDIT =
OMG (as the kids say) Check this out {bnghd} :o
John, on the S. Cheshire / N. Shropshire border. Muppet handle "Grey ghost" and on UK C25 most working days.
Don't just monitor, key up and talk, otherwise everyone thinks no one else is out there !!!

Post Reply

Who is online

Users browsing this forum: No registered users and 7 guests