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Title: Motorola R2600 B question Post by: xe1yzy on May 09, 2011, 10:51:28 AM Hello Guys,
The fuse in the antenna port of my comunication analyzer was blew, this tiny fuse is inside the BNC conector of the antenna port, looks like small Inductor, or a small resistor, does anybody knows where I can found a replacement? Thanks in advance, Pedro XE1YZY Title: Re: Motorola R2600 B question Post by: Jim, W5JO on May 09, 2011, 07:24:28 PM Pedro that is a standard fuse available from numerous suppliers. The problem I have is I can't recall the number for the fuse. Do you have the manual? If you do I believe it gives the type and rating. It seems as if it is a 1/8 or 1/4 amp fuse, sri it has just been too long for me to remember.
Title: Re: Motorola R2600 B question Post by: xe1yzy on May 09, 2011, 11:47:14 PM Hi Jim...
Well, I found the info, is a 125V 1/16 Amp, and looks like a 1/4 resistor, BTW, I found the following home page, its amazing how many different types and sizes of fuses exisits today, take a look http://www.kenselectronics.com/lists/fuses.htm#Voltage (http://www.kenselectronics.com/lists/fuses.htm#Voltage) Best regards Pedro Title: Re: Motorola R2600 B question Post by: WA1GFZ on May 10, 2011, 08:35:48 AM You want to use a fuse with low inductance.
Title: Re: Motorola R2600 B question Post by: kg8lb on May 10, 2011, 11:25:50 AM Sounds like a "PICO" fuse.
(http://images.addoway.com/items/3014/169675/3014_1_9c918e.jpg) We use them often in our SOLID STATE applications (eyuck!). Made by BUSS and sold by Mouser , Digi-Key among others. http://parts.digikey.com/1/parts-kws/pico-fuse (http://parts.digikey.com/1/parts-kws/pico-fuse) Title: Re: Motorola R2600 B question Post by: Jim, W5JO on May 10, 2011, 05:08:48 PM Sounds like a "PICO" fuse.http://parts.digikey.com/1/parts-kws/pico-fuse (http://parts.digikey.com/1/parts-kws/pico-fuse) That's it Title: Re: Motorola R2600 B question Post by: xe1yzy on May 10, 2011, 11:14:54 PM Thanks...
Well, the lowest current value on the "PICO" fuses are 1 Amp, and the manual says 1/16 Amp or 62.5 mA, this value is hard to find, I guess something bigger than 100mA could be dangerous for the analyser circuits right? RGDS Title: Re: Motorola R2600 B question Post by: kg8lb on May 11, 2011, 06:16:02 AM Thanks... This place is one of many that list a 1/16A Pico fuse: Ya gotta look a little ;)Well, the lowest current value on the "PICO" fuses are 1 Amp, and the manual says 1/16 Amp or 62.5 mA, this value is hard to find, I guess something bigger than 100mA could be dangerous for the analyser circuits right? RGDS http://www.tselectronic.com/shop/product/Littelfuse-251-series-PICO-II-Very-Fast-Acting-Axial-Lead-Fuse/825 (http://www.tselectronic.com/shop/product/Littelfuse-251-series-PICO-II-Very-Fast-Acting-Axial-Lead-Fuse/825) Buss makes them, no doubt most Buss dealers sell them. Title: Re: Motorola R2600 B question Post by: xe1yzy on May 11, 2011, 10:59:06 AM Many thanks!! :)
Title: Re: Motorola R2600 B question Post by: kg8lb on May 11, 2011, 04:09:10 PM Glad to help. ;)
Title: Re: Motorola R2600 B question Post by: n1ps on May 12, 2011, 08:35:36 PM I am not familiar with the 2600B, but I have owned several service monitors. The fuse in the antenna input is there usually to protect the receiver from an accidental transmit. >:(
Peter Title: Re: Motorola R2600 B question Post by: flintstone mop on May 16, 2011, 03:52:43 PM I am not familiar with the 2600B, but I have owned several service monitors. The fuse in the antenna input is there usually to protect the receiver from an accidental transmit. >:( Later service monitors allow you to connect the radio to be tested to one port. And TX and RX take place. We have a Moto R2550AZ and it electronically switches if someone 'forgets', while the monitor is generating and you press the PTT on the mic.Peter NEVER increase the current value of the fuse........bye bye expensive test equipment!!! Fred |