Home |
Search |
Today's Posts |
#2
![]() |
|||
|
|||
![]() wrote in message ps.com... Just a thought about the R-5000: when I look at archives from rrsw about the '5000 I see many people commenting about it being a good receiver but "old technology." Except for lack of synch detection (which can be added through an SE-3) and any type of DSP (which, from what I've read and heard samples of in the NRD-545, isn't a perfect tool), what's so "old tech" about it? I still think its a great receiver for both dxing and program listening (nice audio). It can mean old tech in many ways: -The receivers were last made a while ago, and are starting to need repairs due to age. -Unlike newer kilobuck receivers, the R-5000 needed filters added to make it a complete receiver. -The lack of synch detection and the requirement of needing an SE-3 to add it makes the R-5000 not quite the out-of-the-box receiver that the newer ones are. -The design for the R-5000 was done in the mid 80's, and didn't incorporate newer design elements over the course of it's run (like more memories, better computer control, etc). That said, for my money, it's a good receiver that's quite capable of holding it's own in the DXing arena. The R-5000 and the IC-R71A commonly fought it out for the DXers buck back in the 80's and early 90's (pre-R8 and pre-535). The R-5000 could go with up to 4 filters and had good sound, the IC-R71A could pick up faint DX a smidge better but that was balanced by poor audio. (Other's opinions, not mine; I've never tried either...Yet.) --Mike L. wrote: I have a near mint Cubic 102BXA HF transceiver and matching speaker/power supply that I would trade for a like condition R-5000 Kenwood shortwave receiver. The Cubic works perfectly, and is in excellent cosmetic and electrical condition. You may read about this fine rig he http://www.eham.net/reviews/detail/798 This transceiver was built to military standards, as Cubic provided the U.S. Military with a lot of equipment during this period. The build quality is excellent, and reliability is very good. A unique basspand tuning system makes this rig a great performer on both SSB and CW. Take a look at the actual radio he www.members.aol.com/mgaluvr/cubic102bxa This unit comes boxed in two cartons, one for the transceiver and the other for the power supply/speaker, with heavy protective foam, original instruction manual, and power cord. Microphone is not included, but will work with practically any standard type high impedence mike. Guaranteed not to be DOA...this transceiver is fully operational and very nice. Take a look at the photo....additional info upon request...just email me. I am not interested in selling this rig...a trade is preferred. Thanks....Bill |
#3
![]() |
|||
|
|||
![]()
Michael Lawson wrote:
wrote in message ps.com... Just a thought about the R-5000: when I look at archives from rrsw about the '5000 I see many people commenting about it being a good receiver but "old technology." Except for lack of synch detection (which can be added through an SE-3) and any type of DSP (which, from what I've read and heard samples of in the NRD-545, isn't a perfect tool), what's so "old tech" about it? I still think its a great receiver for both dxing and program listening (nice audio). It can mean old tech in many ways: -The receivers were last made a while ago, and are starting to need repairs due to age. -Unlike newer kilobuck receivers, the R-5000 needed filters added to make it a complete receiver. -The lack of synch detection and the requirement of needing an SE-3 to add it makes the R-5000 not quite the out-of-the-box receiver that the newer ones are. -The design for the R-5000 was done in the mid 80's, and didn't incorporate newer design elements over the course of it's run (like more memories, better computer control, etc). That said, for my money, it's a good receiver that's quite capable of holding it's own in the DXing arena. The R-5000 and the IC-R71A commonly fought it out for the DXers buck back in the 80's and early 90's (pre-R8 and pre-535). The R-5000 could go with up to 4 filters and had good sound, the IC-R71A could pick up faint DX a smidge better but that was balanced by poor audio. (Other's opinions, not mine; I've never tried either...Yet.) --Mike L. You pretty much nailed it. In practical terms, the differences between R-5000 and R-71 were matters of taste. Performance was about equivalent, each with as many plusses as the other, each with as many minuses as the other. If you were fluent in each one, they were the same radio on the desk. In practical terms, today, there are some significant differences. R-71 is still relatively well supported by ICOM. R-5000...not so much. Displays are no longer avaiable for R-5000. And both require attention at this age. R-71 will need DC-DC converters rebuilt, display caps replaced, and trimmers on the PLL board replaced. And very likely the power supply board touched up because the regulator operates at such a high temperature, the solder crystallizes on the board. R-5000, will also need recapping, likely a display, and the some encoders are failing. The future outlook is that a greater percentage of R-71's produced will still be in service than R-5000's, at least from the 2005 point of reference, so choosing carefully is very much a requirement if the user plans to put the radio into regular service. |
#4
![]() |
|||
|
|||
![]()
D Peter Maus wrote:
You pretty much nailed it. In practical terms, the differences between R-5000 and R-71 were matters of taste. Performance was about equivalent, each with as many plusses as the other, each with as many minuses as the other. If you were fluent in each one, they were the same radio on the desk. I love my R-5000 but that's got to be the worst keypad ever designed and it bounces like crazy. -- Brian Denley http://home.comcast.net/~b.denley/index.html |
#5
![]() |
|||
|
|||
![]()
Brian Denley wrote:
D Peter Maus wrote: You pretty much nailed it. In practical terms, the differences between R-5000 and R-71 were matters of taste. Performance was about equivalent, each with as many plusses as the other, each with as many minuses as the other. If you were fluent in each one, they were the same radio on the desk. I love my R-5000 but that's got to be the worst keypad ever designed and it bounces like crazy. In fact, that keypad was one of the reasons I went with R-71. |
#6
![]() |
|||
|
|||
![]()
In article ,
D Peter Maus wrote: In practical terms, today, there are some significant differences. R-71 is still relatively well supported by ICOM. R-5000...not so much. Displays are no longer avaiable for R-5000. And both require attention at this age. R-71 will need ...... Two points missed: 1. The R-71 has it's microprocessor's programing on a battery backed up RAM chip. When the battery fails, the radio is dead until it is reprogramed. Someone sold an update kit, I have no idea if they are still available. The other question is how much longer will ICOM be able to reprogram the current chips? One would hope they keep that equipment around but old computers fail, programs no longer run after operating system updates etc. 2. The R-5000's had a problem with the rubber potting compound on the PLL board. A nasty job, the easy way is to unsolder ALL of the components, scrape out the left over compound and install new components. As the components become hard to replace, a repair will be to use a tweezer and dental pick to remove all the compound by hand, hoping that you do not damage anything and nothing was corroded to the point of being unuseable. I did it that way, and if it was not for the fact that the cost of shipping each way to a competent repair person was more than the cost of them repairing it, I would not have. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM IL Voice: (07)-7424-1667 IL Fax: 972-2-648-1443 U.S. Voice: 1-215-821-1838 You should have boycotted Google while you could, now Google supported BPL is in action. Time is running out on worldwide radio communication. |
#7
![]() |
|||
|
|||
![]()
Geoffrey S. Mendelson wrote:
In article , D Peter Maus wrote: In practical terms, today, there are some significant differences. R-71 is still relatively well supported by ICOM. R-5000...not so much. Displays are no longer avaiable for R-5000. And both require attention at this age. R-71 will need ...... Two points missed: 1. The R-71 has it's microprocessor's programing on a battery backed up RAM chip. When the battery fails, the radio is dead until it is reprogramed. Someone sold an update kit, I have no idea if they are still available. This comes up every time R-71 is mentioned. I had mine for more than 10 years, and it was used when I bought it. Still had the original battery when I sold it. And the guy that bought it reports that it's still working. I spoke to Bellevue about this, and the head tech there said he's never replaced a battery that was not working. A lot of users have them replaced because they're nervous about it. Others have them replaced while in for other work. But he's never replaced a battery because it was dead. The worst he's seen is replacemnt jobs that were botched by users, and had to be reprogrammed. This conversation took place a couple of years ago, so I don't know if his claim has changed. The point is that this issue can be more or less a non issue depending on users' diligence. The other question is how much longer will ICOM be able to reprogram the current chips? One would hope they keep that equipment around but old computers fail, programs no longer run after operating system updates etc. Also a non issue. As long as they support the radio, they will be reprogramming RAM. But it does afford the opportunity to mention the number of amateur users who have learned to reprogram this radio, and who can offer their help. Do a web search. Or they show up in RRS, from time to time. The Willco board is still available, though the numbers are limited, as the chips used are no longer available. 2. The R-5000's had a problem with the rubber potting compound on the PLL board. A nasty job, the easy way is to unsolder ALL of the components, scrape out the left over compound and install new components. As the components become hard to replace, a repair will be to use a tweezer and dental pick to remove all the compound by hand, hoping that you do not damage anything and nothing was corroded to the point of being unuseable. I did it that way, and if it was not for the fact that the cost of shipping each way to a competent repair person was more than the cost of them repairing it, I would not have. Geoff. That's quite a visual ![]() |
#8
![]() |
|||
|
|||
![]() "Brian Denley" wrote in message ... D Peter Maus wrote: You pretty much nailed it. In practical terms, the differences between R-5000 and R-71 were matters of taste. Performance was about equivalent, each with as many plusses as the other, each with as many minuses as the other. If you were fluent in each one, they were the same radio on the desk. I love my R-5000 but that's got to be the worst keypad ever designed and it bounces like crazy. -- Brian Denley http://home.comcast.net/~b.denley/index.html I cleaned the contacts on a R-5000 I sold. Worked great. It wasn't that hard. The funny thing is the 5000 I've had for twelve years has never had key bounce but I never use it anyway because RxPlus comp control is how I enter freqs. -- Regards B.H. Brian's Basement http://webpages.charter.net/brianhill/6.htm Brian's Radio Universe http://webpages.charter.net/brianhill/500.htm |
#9
![]() |
|||
|
|||
![]() "D Peter Maus" wrote in message ... Geoffrey S. Mendelson wrote: In article , D Peter Maus wrote: In practical terms, today, there are some significant differences. R-71 is still relatively well supported by ICOM. R-5000...not so much. Displays are no longer avaiable for R-5000. And both require attention at this age. R-71 will need ...... Two points missed: 1. The R-71 has it's microprocessor's programing on a battery backed up RAM chip. When the battery fails, the radio is dead until it is reprogramed. Someone sold an update kit, I have no idea if they are still available. This comes up every time R-71 is mentioned. I had mine for more than 10 years, and it was used when I bought it. Still had the original battery when I sold it. And the guy that bought it reports that it's still working. I spoke to Bellevue about this, and the head tech there said he's never replaced a battery that was not working. A lot of users have them replaced because they're nervous about it. Others have them replaced while in for other work. But he's never replaced a battery because it was dead. The worst he's seen is replacemnt jobs that were botched by users, and had to be reprogrammed. This conversation took place a couple of years ago, so I don't know if his claim has changed. The point is that this issue can be more or less a non issue depending on users' diligence. The other question is how much longer will ICOM be able to reprogram the current chips? One would hope they keep that equipment around but old computers fail, programs no longer run after operating system updates etc. Also a non issue. As long as they support the radio, they will be reprogramming RAM. But it does afford the opportunity to mention the number of amateur users who have learned to reprogram this radio, and who can offer their help. Do a web search. Or they show up in RRS, from time to time. The Willco board is still available, though the numbers are limited, as the chips used are no longer available. 2. The R-5000's had a problem with the rubber potting compound on the PLL board. A nasty job, the easy way is to unsolder ALL of the components, scrape out the left over compound and install new components. As the components become hard to replace, a repair will be to use a tweezer and dental pick to remove all the compound by hand, hoping that you do not damage anything and nothing was corroded to the point of being unuseable. I did it that way, and if it was not for the fact that the cost of shipping each way to a competent repair person was more than the cost of them repairing it, I would not have. Geoff. That's quite a visual ![]() I never had a problem with my R-71 either. I think your right Pete. It's a rare occurance if it happens at all. The funny thing is I had my 71 in a box for three years and it still worked. Go figure? -- Regards B.H. Brian's Basement http://webpages.charter.net/brianhill/6.htm Brian's Radio Universe http://webpages.charter.net/brianhill/500.htm |
#10
![]() |
|||
|
|||
![]()
Question please,just what is key bounce?
cuhulin |
Reply |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
FYI - Shortwave Radio Listener (SWL) Groups on YAHOO ! | Shortwave | |||
"Shortwave is actually experiencing a resurgence" | Shortwave | |||
Questions -?- Considering a 'small' Shortwave Listener's (SWLs) Antenna | Shortwave | |||
BOLO STOLEN XTL5000 mobiles here are serials and models | Swap | |||
I wonder... | Shortwave |