Re: [Repeater-Builder] Portable repeater

Allen, Just for fun our club set-up a 250watt repeater w/o cans. We installed the transmit antenna on the roof top of the building. One floor down (its a tiered roof) we installed the receive antenna. We positioned the two antenna so that they were physically separated by the structure. The

[Repeater-Builder] Portable repeater and RSSI issues

Repeater Power output being a function of RSSI...Have another think on this one ... What about all the other mobiles or handhelds that could be in fringe or poor coverage areas, what will happen to their repeater reception if suddenly the repeater power is suddenly dropped at the expense of a

[Repeater-Builder] Portable repeater

I am in the design stages for a portable VHF (2 meter ham) repeater, and thought I would solicit the views of the group for desired features. In broad strokes, we plan on a computer programmable unit, capable of one or two field selectable operation modes. CTCSS only, no COS or DTS. This is

Re: [Repeater-Builder] Portable repeater

://www.rfi.com.au/downloads/wireless/multicoupling/duplexer132_174.pdf   Please post some pics when you are done and maybe some along the way.   Thanks   Greg VK2VGM --- On Mon, 8/3/09, vhsproducts captal...@aol.com wrote: From: vhsproducts captal...@aol.com Subject: [Repeater-Builder] Portable repeater

Re: [Repeater-Builder] Portable repeater

Packaging, ease of use and battery life are way up there on the list. Without addressing these issues, It's just another portable repeater Have a look at this. This is what we made for Emergency services http://www.signals.net.nz/special_offers/ Either VHF or UHF. Regards Gareth Bennett

Re: [Repeater-Builder] Portable repeater

Use a solar panel to keep a charge on the battery. if the repeater is only 5 watts then a small solar panel will do the trick easily. you can get a 120 watt panel or an array of smaller panels for portability which will charge the battery plus run the repeater all day and allow the system to

Re: [Repeater-Builder] Portable repeater

if you go with 2 ant you will have a lot of coax to lug around !! if you could go to UHF the duplexer are smaller even 220 mhz ! unless you have a non Ham freq than you could run a mobile duplexer on VHF and have 2 of them and swap jumper cables in the box Good luck ! Rick On Tue, Aug 4,

RE: [Repeater-Builder] Portable repeater

To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Portable repeater Use a solar panel to keep a charge on the battery. if the repeater is only 5 watts then a small solar panel will do the trick easily. you can get a 120 watt panel or an array of smaller panels

Re: [Repeater-Builder] Portable repeater

Sent: Monday, August 03, 2009 11:09 PM Subject: [Repeater-Builder] Portable repeater I am in the design stages for a portable VHF (2 meter ham) repeater, and thought I would solicit the views of the group for desired features. In broad strokes, we plan on a computer programmable unit

RE: [Repeater-Builder] Portable repeater

...@yahoogroups.com] On Behalf Of vhsproducts Sent: Monday, August 03, 2009 10:09 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Portable repeater I am in the design stages for a portable VHF (2 meter ham) repeater, and thought I would solicit the views of the group

Re: [Repeater-Builder] Portable repeater

Towards reducing power consumption: Use the sleep mode on the processor. Set RF output power as a function of RSSI. Include multi-chemistry battery management. Include solar panel management. Include charge termination output; would drive a relay which would shut down a small generator which

[Repeater-Builder] Portable Repeater

Hello All, I am looking for a good antenna for a portable 440 repeater. 73's,

Re: [Repeater-Builder] Portable Repeater - A Case History

At 1/2/2005 09:03 PM, you wrote: Kevin, Yes, it is asymmetrical. Each of the three high-pass resonators has two black plastic plugs near the connector end, while the low-pass resonators each have one plastic plug. A Celwave engineer told me that the 5085-1 is manufactured to order, and that

Re: [Repeater-Builder] Portable Repeater - A Case History

Kevin, Yes, it is asymmetrical. Each of the three high-pass resonators has two black plastic plugs near the connector end, while the low-pass resonators each have one plastic plug. A Celwave engineer told me that the 5085-1 is manufactured to order, and that the coupling loops are

Re: [Repeater-Builder] Portable Repeater - A Case History

Eric Lemmon wrote: It comprises six helical resonators in a notch-only configuration. Its insertion loss at RX is 1.1 dB, and at TX is 1.4 dB. The notch depth at RX is 92.5 dB and at TX is 79.4 dB. These are very good numbers, better than what is needed for zero desense in this

[Repeater-Builder] Portable Repeater - A Case History

I recently built a portable 2m repeater that is about the size of a bowling bag and weighs about the same. It is built into an SKB carrying case that is rugged, dripproof, and good-looking. The secret of getting a full-duplex radio and the duplexer into a box measuring about one cubic foot in