| Author |
Message |
    
Kabar
Member
Username: Kabar
Post Number: 57
Registered: 6-2003
| | Posted on Friday, February 22, 2008 - 3:06 pm: | 
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Anyone know what wattage the newer Magnum 257 radios with the ERF-2030 finals put out on single sideband out of the box new and untuned in the 10 meter band? |
Tech808
Moderator
Username: Tech808
Post Number: 15332
Registered: 8-2002
| | Posted on Friday, February 22, 2008 - 4:50 pm: |
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P03-01000 Magnum 257 10 Meter Radio
[P03-01000] $186.99
Freq. Coverage 28.000 - 29.699 MHz
RF Power Output 50 Watts PEP
New ERF-2030 Mosfet Power
Modes AM, FM, USB, LSB
Microprocessor Controlled
Variable RF Output Power
5 Digit LCD Frequency Display
Scanning Microphone
Dimensions 2(H) x 6(W) x 8.5(D) inches
Night Illuminated Display
Frequency Scan
Automatic Call Frequency Control (FM 29.600 MHz)
Lon~Tech808
CEF#0808/HAM#001/CVC#0002
Tech808@copperelectronics.com
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Patzerozero
Senior Member
Username: Patzerozero
Post Number: 4156
Registered: 7-2004
| | Posted on Friday, February 22, 2008 - 7:24 pm: |
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kabar, when i bought mine last may, i did NOT choose to have copper align and expand mine, i did it myself. expansion was a breeze. initial tests found the wattage output extremely LOW. i opened it & adjusted ONLY the SSB power internally & it jumped to mid 50's on 27.385 & just about 50 on 28.360. i have never fully aligned it, or adjusted any other coils-just the power RV's. it made more then a handful of skip contacts from the base with ease. i then put it in my truck & use it ONLY mobile ONLY for 10 meters & it has made EVERY single contact i have attempted with no amplifier! |
Kabar
Member
Username: Kabar
Post Number: 58
Registered: 6-2003
| | Posted on Saturday, February 23, 2008 - 7:34 am: |
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Thank you Tech 808 and Patzerozero.
Have either of you checked with a receiving station to verify if the newer Magnum 257`s transmit on frequency single sideband dead center or if not how many cycles off plus or minus dead center since it has a locked clarifier. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 4157
Registered: 7-2004
| | Posted on Saturday, February 23, 2008 - 12:48 pm: |
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it's real close, freq set to 28.360 USB, the clarifier center turned maybe where you'd find '11:58' as compared to '12 o'clock'-it is THATCLOSE to dead on out of the box. that is to tune to an ic706mkIIg that was aligned & tested, which will show 28.359.96 or closer. rcv & xmit of the 257 seem to be in agreement with each other. for me personally, it could never be my 'only' radio, that aside, it IS an AMAZING little radio! |
Dale
Senior Member
Username: Dale
Post Number: 1291
Registered: 12-2002
| | Posted on Sunday, February 24, 2008 - 8:11 am: |
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on the 257 dont the clarifer adfjust the tx/rx together
dale/a.k.a.hotrod
cef426
cvc#64
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Kabar
Member
Username: Kabar
Post Number: 59
Registered: 6-2003
| | Posted on Monday, February 25, 2008 - 6:19 pm: |
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I think that the clarifier on the Magnum 257`s are locked.
Turning the clarifier knob only moves the receive frequency and the transmit is locked.
A good reason to consider a HF rig such as Icom,Kenwood or Yaesu where you change the transmit frequency with the VCO by the tuning knob for single sideband work.
Also most of these radios are rated at 100 watts on single sideband right out of the box. |
Slugo4449
Intermediate Member
Username: Slugo4449
Post Number: 178
Registered: 7-2004
| | Posted on Monday, March 03, 2008 - 4:19 pm: |
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Kabar:
I have one of the older 257's, the 30 watt version, and the clairifier tracks both transmit and receive.
73,
Marty |
Dx47
Junior Member
Username: Dx47
Post Number: 14
Registered: 4-2007
| | Posted on Tuesday, June 03, 2008 - 8:09 pm: |
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Is this rig not sold by copper anymore, or am I just missing it in the selection?
Thanks.. |
Forummaster
Moderator
Username: Forummaster
Post Number: 510
Registered: 11-2001
| | Posted on Wednesday, June 04, 2008 - 5:56 pm: |
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We removed the Magnum 257 from the website because RFLimited hasn't been able to supply them for quite some time. As soon as they are available again you can be sure we will stock them and put them back up on our website. We felt it was unfair to our customers to continue taking orders for them when we had no idea when we would be able to ship them.
Forummaster
CEF001
CVC001
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Radio_terminator
Junior Member
Username: Radio_terminator
Post Number: 16
Registered: 2-2006
| | Posted on Wednesday, July 23, 2008 - 6:42 am: |
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Have you gotten in any more 257's? |
Tech808
Moderator
Username: Tech808
Post Number: 15908
Registered: 8-2002
| | Posted on Wednesday, July 23, 2008 - 7:44 am: |
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Yes, they are in stock just contact Customer Service to place your order.
(800)626-6343
Lonnie~Tech808
CEF#0808/HAM#001/CVC#0002
Tech808@copperelectronics.com
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Radio_terminator
Junior Member
Username: Radio_terminator
Post Number: 17
Registered: 2-2006
| | Posted on Wednesday, July 23, 2008 - 11:27 pm: |
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Excellent! Thanx, and 73's! |
Ec158
New member
Username: Ec158
Post Number: 6
Registered: 6-2008
| | Posted on Tuesday, September 23, 2008 - 11:58 am: |
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I recently purchased a Magnum 257 and have been using it for the last week, I consistently get good signal and audio reports (after turning up the pot inside the mic). The noise blanker works great in SSB mode and pretty good in AM mode. The conversion to open up the frequency range was too easy ( I like to use my soldering iron once in a while, didn't need it this time). I am very happy with the radio and highly recommend it. |
Lucky7
Junior Member
Username: Lucky7
Post Number: 11
Registered: 10-2005
| | Posted on Tuesday, January 13, 2009 - 2:22 pm: |
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Does the 257 show just freq. counter or is it able to show channel #'s? I am looking at one to put in my wife's car and it would be easier for her if it show's channel #'s.
Tomorrow will be yesterday two days from now!
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Big_m
Junior Member
Username: Big_m
Post Number: 43
Registered: 9-2007
| | Posted on Tuesday, January 13, 2009 - 3:56 pm: |
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Lucky7, The 257 can show channel numbers also. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 4456
Registered: 7-2004
| | Posted on Tuesday, January 13, 2009 - 3:58 pm: |
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it'll show either with the push of a button....& go back with another push....or 2. |
Lucky7
Junior Member
Username: Lucky7
Post Number: 12
Registered: 10-2005
| | Posted on Tuesday, January 13, 2009 - 4:34 pm: |
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Thanks for the info
Tomorrow will be yesterday two days from now!
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Sitm
Intermediate Member
Username: Sitm
Post Number: 231
Registered: 1-2004
| | Posted on Friday, January 23, 2009 - 10:35 am: |
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I have owned the 257 now for accouple years. I have received very good audio reports on this radio on am and ssb. I finally opened up the mic and turned it up to about 90%. Everyone thought I had purchased a new radio or as they said, "did you get a big radio". Apparently this makes a good deal of difference. |
Golden_screw_driver
Member
Username: Golden_screw_driver
Post Number: 54
Registered: 2-2008
| | Posted on Friday, January 23, 2009 - 11:38 am: |
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sitm, I bought my wife one a while back and one of our reg's up here HAD to see it, He came by and thought i had switch the radio's "THAT THING IS TINY, WOW!!!!LOOK AT THE HEAT SINK'S" was his response to the radio, She run's her's turned down with the 667v and the audio in the mike a little over half... Long story short the thing is a monster in a small package.
421 GOLDEN SCREW DRIVER
CEF#0995
RI 421
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Dale
Senior Member
Username: Dale
Post Number: 1378
Registered: 12-2002
| | Posted on Friday, January 23, 2009 - 8:25 pm: |
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sounds alot like my omegaforce i run the gain inside the mike wide open and fine tune it with my mic gain usually 12oclock is were i have it
for ssb .but higher for am.been thinking bout a
257 for my mobile...hmm
dale/a.k.a.hotrod
cef426
cvc#64
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Jimb654
Junior Member
Username: Jimb654
Post Number: 10
Registered: 9-2002
| | Posted on Saturday, February 14, 2009 - 5:07 am: |
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I just purchased my third 257 from Coppers. This is the first one with 50 watts for me. This is the best one yet. Out of the box all I did was the conversion and it does 45-50 watts pep and 100% modulation. The receive is very quiet. The radio came with a different(larger) mic. It still has the ajustment inside. The channel up-down buttons are on the face of the mic which can get bumped accidently sometimes. This radio has all kinds of audio with the stock mic, no power mic needed. One thing that is confusing is it states on the radio that it was made in the Phillipenes and I thought they were now made in China. Great Radio! |
Kb9ryi
Junior Member
Username: Kb9ryi
Post Number: 39
Registered: 7-2002
| | Posted on Saturday, March 21, 2009 - 11:26 pm: |
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I have used my "Cool Blue" Magnum 257 for a long time. Bought one soon after the new blue ones came out. I had it in a couple different minivans with a KW7, 7ft Fire Stik antenna with always great compliments on how it sounded. The last van I bought I put a 2510 in that simply because I had it on the shelf and had not used it in a few years. While the 2510's are great radios mine had developed a problem with a weak distorted audio. About this time I found a truck. I had been looking for a full size Chevy Tahoe 2dr. I finally found one I liked and bought that. I installed the 257 also a Icom 2720 and a BCT7 scanner. The 257 still works as good as when I bought it. Another post said something about it being rock solid on freq. I have found this to be exactly true. What ever I set it on, it stays right there. NO drift at all. OH FYI the clarifier on mine tracks both TX and RX. One more thing, unlike a lot of "10 Meter" radios out there, this 257 has the TX and RX exactly on the same freq. I hear so may radios out there with the RX and TX not aligned together and it makes it irritating trying to talk on SSB.
Anyway after several years I am still very happy with the Cool Blue 257. Its still making contacts for me and I am still getting compliments on the clear clean loud audio it has. For the $.$$ it is very hard to beat this rig. Don't let the small size fool you they work very well. The display is easy to read even for my aging eyes. Even in the bright sunlight I can still read it just fine.
Right after I bought it I contacted Magnum asking for some service manual information. They not only send me the information I asked for but included a Magnum Radio cap as well. I have to rate their service as top shelf.
Anyway I have my 2510 going to the local radio tech and if it is not repairable I intend to order another 257 for the house. |
Revpo
Advanced Member
Username: Revpo
Post Number: 503
Registered: 7-2006
| | Posted on Thursday, June 18, 2009 - 4:17 pm: |
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MAGNUM 257
I presume after reading the comments, the mic is bigger than the older ones.
Also on the power cord is it the same as for the other radio's 3 pin or different.
CEF 795
73
REVPO/DOCTOR/CEF 795
Wavin a hand from the cornfields of INDIANA
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405
Junior Member
Username: 405
Post Number: 15
Registered: 11-2003
| | Posted on Monday, July 20, 2009 - 1:52 am: |
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I have the new Blue display 257 with the Mosfet finals.The clarifier, like the other 257s I have owned tracks on both receive and transmit on LSB/USB/AM/FM.I have tested this using a hand held 6 digit freqency counter. The power output on mine is 45 watts peak on AM and sideband according to my MFJ 948 using a dummy load.
Two things I would like to see changed on this rig: A real 6 digit freq. counter instead of the 5 digit freq. "display" and position marks on the control knobs instead of those indentations on the tops of the knobs. ( Have trouble seeing their position while driving). Other than that, great little rig! 73 CEF 254 |
Stepchild
Intermediate Member
Username: Stepchild
Post Number: 203
Registered: 11-2002
| | Posted on Tuesday, July 21, 2009 - 12:36 am: |
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Well that's a shame. What is it about an unlocked clarifier that is so great. Personaly I don't like it and it should be an option. Can you not move between freq's like the 2510 or the 2950 using a cursor?
Stepchild
CEF-187
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Lonestarbandit
Member
Username: Lonestarbandit
Post Number: 95
Registered: 10-2006
| | Posted on Saturday, October 31, 2009 - 11:09 pm: |
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copper still have 257s? |
Tech808
Moderator
Username: Tech808
Post Number: 17194
Registered: 8-2002
| | Posted on Sunday, November 01, 2009 - 12:18 am: |
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Yes they do.
CLICK HERE >> MAGNUM 257
Lon~Tech808
N9CEF
CEF#808~CVC#002
Radio Enthusiast!
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Ak3383
Member
Username: Ak3383
Post Number: 92
Registered: 11-2005
| | Posted on Wednesday, March 17, 2010 - 9:44 pm: |
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The new 257 is great, the clairifier does track both rx and tx. The best thing is the new full size radio powered "power mic" with up/down buttons. Loud and clear. |
