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#1
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JRC JHP500 handheld transceiver
I have been trying to find the operator's manual or other documentation
for this unit on the web, but have not succeeded. If anyone can direct me to a spot on the web where I can download it, I would be grateful. Thanks. |
#2
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JRC JHP500 handheld transceiver
bluenosepiperflyer wrote:
I have been trying to find the operator's manual or other documentation for this unit on the web, but have not succeeded. If anyone can direct me to a spot on the web where I can download it, I would be grateful. Thanks. I have an owners manual. Contact me and I can arrange to get it to you. -- -------------------- Scott F. Migaldi CP-ASEL-IA N8116B PADI MI-150972 Join the PADI Instructor Yahoo Group http://groups.yahoo.com/group/PADI-Instructors/ -------------------- |
#3
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JRC JHP500 handheld transceiver
I also have the same unit. Is there any reasonable way to replace the
original rechargable battery? |
#4
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JRC JHP500 handheld transceiver
I also have the same unit. Is there any reasonable way to replace the
original rechargable battery? If it is a detachable battery pack, there are several suppliers that can swap the old pack for a new. I replaced a NiCd pack for a NiMH on an ICOM. |
#5
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JRC JHP500 handheld transceiver
If it is a detachable battery pack, there are several suppliers that can
swap the old pack for a new. I replaced a NiCd pack for a NiMH on an ICOM. Where did you go? I'd love to try that. |
#6
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JRC JHP500 handheld transceiver
In article om,
"Robert M. Gary" wrote: If it is a detachable battery pack, there are several suppliers that can swap the old pack for a new. I replaced a NiCd pack for a NiMH on an ICOM. Where did you go? I'd love to try that. I cannot remember which one. I checked prices at AirVenture and bought the one with the best price. Look in any of the aviation mags, they usually have ads. If you cannot find any there, I will look for my business cards. |
#7
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JRC JHP500 handheld transceiver
Lots of places re-cell battery packs.
http://www.batteriesplus.com http://store.batteryspecialists.com http://www.asisco.com/battery_rebuiltpacks.htm "Robert M. Gary" wrote in message ps.com... If it is a detachable battery pack, there are several suppliers that can swap the old pack for a new. I replaced a NiCd pack for a NiMH on an ICOM. Where did you go? I'd love to try that. |
#8
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JRC JHP500 handheld transceiver
On Wed, 26 Oct 2005 00:24:34 +0000, john smith wrote:
I also have the same unit. Is there any reasonable way to replace the original rechargable battery? If it is a detachable battery pack, there are several suppliers that can swap the old pack for a new. I replaced a NiCd pack for a NiMH on an ICOM. Be careful when switching to alternate battery technologies. NiCads are designed to be charged at rates up to 3C while most NiMH are typically designed to be charged no faster than 1 to 1.2C. As a rule of thumb, NiCads charge FAST while NiMH charge slow but have much larger capacities. Another important distinction between the two battery types, when peak charging, each battery type indicates "full" differently. Long of the short, if you change battery technologies, make sure you change chargers too! Otherwise, you may be in for a surprise including very short battery life, batteries which never hold a full charge, and maybe even fires. Greg |
#9
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JRC JHP500 handheld transceiver
Greg Copeland writes:
On Wed, 26 Oct 2005 00:24:34 +0000, john smith wrote: I also have the same unit. Is there any reasonable way to replace the original rechargable battery? If it is a detachable battery pack, there are several suppliers that can swap the old pack for a new. I replaced a NiCd pack for a NiMH on an ICOM. Be careful when switching to alternate battery technologies. NiCads are designed to be charged at rates up to 3C while most NiMH are typically designed to be charged no faster than 1 to 1.2C. As a rule of thumb, NiCads charge FAST while NiMH charge slow but have much larger capacities. Another important distinction between the two battery types, when peak charging, each battery type indicates "full" differently. Long of the short, if you change battery technologies, make sure you change chargers too! Otherwise, you may be in for a surprise including very short battery life, batteries which never hold a full charge, and maybe even fires. All my NiMH chargers claim to be able to charge NiCD batteries too; are they lying to me? Or are there big compromises? This is completely intellectual curiosity, since haven't used any AA NiCD batteries in years. -- David Dyer-Bennet, , http://www.dd-b.net/dd-b/ RKBA: http://noguns-nomoney.com/ http://www.dd-b.net/carry/ Pics: http://dd-b.lighthunters.net/ http://www.dd-b.net/dd-b/SnapshotAlbum/ Dragaera/Steven Brust: http://dragaera.info/ |
#10
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JRC JHP500 handheld transceiver
On Mon, 30 Jan 2006 10:40:05 -0600, David Dyer-Bennet wrote:
[snip] All my NiMH chargers claim to be able to charge NiCD batteries too; are they lying to me? Or are there big compromises? This is completely intellectual curiosity, since haven't used any AA NiCD batteries in years. Well, you really didn't provide enough information to say one way or another. But chances are, you're safe as along as it says it supports the battery type. My own high-end DC charger must be told the type of battery it is charging, when it is charging in peak mode. I suppose it's possible that a charger can automatically detect both types of fall-off but it may run a higher risk of a false positive. Keep in mind, that's a guess on my part. Assuming it's peak charger, a false positive would mean the battery did not get charged to capacity. If it is a trickle charger, a false positive/negative means it's either over or under charged. And frankly, trickle chargers are well known for over charging batteries. Over charging a battery can result in everything from simple cell damage (reduced capacity and lower supported discharge loads) to an actual fire. Also, don't forget that damaged cells may cause a fire during high load discharge cycles too. Which is to say, an undamaged cell versus a damaged cell, is more prone is be a victim of excessive heat build up, during high load cycles. Lastly, "high load" is largely dependant on both the type of cell. Remember, not all rechargable cells are equal. As a rule of thumb, given your cells, if your cells are hot to the touch during and immediately after use, the application is probaly high load for them. Likewise, if during charging, your batteries are getting hot to the touch, long before the charge cycle is complete, you might question if the battery is being over charged...especially if it's a trickle charger. Greg |
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