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Re: 2m to 70cm upconverter design, any interrest ??



 I got an 857 used for $350 that needed some minor work, that I took care of 
myself . Their out there if you look...

73 Jeff kb2m



----- Original Message ----- 
From: "Pieter Ibelings" <sietetrescincoprimo@hotmail.com>
To: <>
Sent: Thursday, June 23, 2005 6:46 PM
Subject: Re: [amsat-bb] 2m to 70cm upconverter design, any interrest ??


> Way too expensive when you can get a new Yaesu FT-857 for $629
>
>
>
>
>>From: Andrew Glasbrenner <glasbrenner@mindspring.com>
>>Reply-To: Andrew Glasbrenner <glasbrenner@mindspring.com>
>>To: William Leijenaar <pe1rah@yahoo.com>, amsat-bb@amsat.org
>>Subject: Re: [amsat-bb] 2m to 70cm upconverter design, any interrest ??
>>Date: Thu, 23 Jun 2005 16:26:35 -0400 (GMT-04:00)
>>
>>Hamtronics _used_ to make the XV4. It was something like 10mw in on 28 
>>mhz, 1 watt out on 432 or 435. Sold as a kit for $90 about 5 years ago. I 
>>bet if there was a group order, or enough demand, maybe they'd bring it 
>>back.
>>
>>The offer of the kit is admirable, but frankly at $250 assembled you could 
>>find any number of used 432 all mode transceivers for similar cost. DEM 
>>has a 10mw 432/435 transverter kit minus hardware and box for $180. Thats 
>>transmit AND receive.
>>
>>73, Drew KO4MA
>>
>>-----Original Message-----
>>From: William Leijenaar <pe1rah@yahoo.com>
>>Sent: Jun 23, 2005 3:08 PM
>>To: amsat-bb@AMSAT.Org
>>Subject: [amsat-bb] 2m to 70cm upconverter design, any interrest ??
>>
>>Hi AMSATs,
>>
>>To get on the 70cm HAMSAT uplink is not easy for many
>>hams in the world. FM handies are available, but other
>>modes than FM is very rare and to expensive for those
>>hams.
>>
>>To get them on 70cm ssb the best way is to use an
>>upconverter from their widely available HF. With use
>>of an upconverter an 10m ssb signal will be converted
>>into an 70cm ssb signal and can be used for HAMSATs
>>uplink.
>>With use of a 2m to HF down-converter the same HF can
>>be used for receiving the HAMSATs ssb downlink.
>>
>>I have been looking around the web to find available
>>converters. For 2m to 10m down-converters there are
>>several options, with good prices. Unfortunatly for
>>10m to 70cm up-converters there is very little
>>available and with high prices.
>>
>>Because of this I have been working on a cheap and
>>simpel to make design. After some weeks testing and
>>experimenting I got something on the test bench.
>>
>>The prototype can be seen on my webpage:
>>www.qsl.net/pe1rah/10m70cm.htm
>>
>>or via my main page:
>>www.qsl.net/pe1rah
>>
>>The features of the design are:
>>-------------------------------
>>* Made on a PCB
>>* In a metal box (74mm x 148mm x 30mm)
>>* 407MHz local oscillator build in
>>* 12Vdc power supply
>>* 50mW output on 70cm (enough to drive M57716 10W
>>power module)
>>* 28MHz BNC input, 70cm BNC output
>>* Unwanted suppression >40dB
>>* No exotic components
>>
>>When there is enough interrest I will deliver kits and
>>complete constructed converters.
>>
>>I can not deliver it for a price less than below:
>>-------------------------------------------------
>>Kits              = 175 USD (+ shipping costs)
>>Complete build    = 250 USD (+ shipping costs)
>>
>>!!! Please note that this is a complete TX
>>upconverter, included PCB, Crystal, metal box, BNC
>>connectors etc etc
>>!!! The only thing needed to be qrv on HAMSAT 70cm
>>uplink is a final amplifier.
>>!!! Best solution is a M57716 module that give 10W
>>output at the 50mW input.
>>
>>Let me know if there is any interrest,
>>
>>73,
>>William Leijenaar
>>PE1RAH
>>---
>>
>>
>>
>>__________________________________
>>Discover Yahoo!
>>Get on-the-go sports scores, stock quotes, news and more. Check it out!
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>>----
>>Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
>>Not an AMSAT member? Join now to support the amateur satellite program!
>>To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>>----
>>Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
>>Not an AMSAT member? Join now to support the amateur satellite program!
>>To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
> Not an AMSAT member? Join now to support the amateur satellite program!
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org 
----
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