I'm purchased 2m and 432 preamps for my satellite antenna system and both will require external bias-tees for power. Looking around on both US and UK/EU websites I've found bias-tees that cost almost as much or more than the preamps did. The inexpensive devices I've found are receive-only and meant for SRD users.
Does anyone know of a source of bias-tees that cost less than $100.00 each, have decent specs on 2m and 432 and can withstand a transmit power of 50 or 100 watts. (Yes, I know I don't need to run 50 or 100 watts for satellite work but I don't want devices that will fail the first time I accidentally transmit "QRO".
Thanks
If you have the time to work with surface mount parts, Marki Microwave sells some SMT bias Tee's for around $50. I didn't see a spec for max RF level on their web site but it might be worth looking into. I bought a few of them one time to protect the ports of my VNA by grounding the DC input terminal. They've worked very well.
Mike
On Tue, Jun 2, 2020 at 9:45 AM k0ekl--- via AMSAT-BB [email protected] wrote:
I'm purchased 2m and 432 preamps for my satellite antenna system and both will require external bias-tees for power. Looking around on both US and UK/EU websites I've found bias-tees that cost almost as much or more than the preamps did. The inexpensive devices I've found are receive-only and meant for SRD users.
Does anyone know of a source of bias-tees that cost less than $100.00 each, have decent specs on 2m and 432 and can withstand a transmit power of 50 or 100 watts. (Yes, I know I don't need to run 50 or 100 watts for satellite work but I don't want devices that will fail the first time I accidentally transmit "QRO".
Thanks
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
https://www.minikits.com.au/electronic-kits/bias-tee
On 6/2/2020 12:27 PM, Mike Wilhelm via AMSAT-BB wrote:
If you have the time to work with surface mount parts, Marki Microwave sells some SMT bias Tee's for around $50. I didn't see a spec for max RF level on their web site but it might be worth looking into. I bought a few of them one time to protect the ports of my VNA by grounding the DC input terminal. They've worked very well.
Mike
On Tue, Jun 2, 2020 at 9:45 AM k0ekl--- via AMSAT-BB [email protected] wrote:
I'm purchased 2m and 432 preamps for my satellite antenna system and both will require external bias-tees for power. Looking around on both US and UK/EU websites I've found bias-tees that cost almost as much or more than the preamps did. The inexpensive devices I've found are receive-only and meant for SRD users.
Does anyone know of a source of bias-tees that cost less than $100.00 each, have decent specs on 2m and 432 and can withstand a transmit power of 50 or 100 watts. (Yes, I know I don't need to run 50 or 100 watts for satellite work but I don't want devices that will fail the first time I accidentally transmit "QRO".
Thanks
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Thanks.
I found the spec sheet and it lists 1 watt as the maximum power handling capability.
From: Mike Wilhelm [email protected] Sent: Tuesday, June 2, 2020 11:27 AM To: [email protected] [email protected]; [email protected] Cc: [email protected] Subject: Re: [amsat-bb] Source for affordable bias-tees?
If you have the time to work with surface mount parts, Marki Microwave sells some SMT bias Tee's for around $50. I didn't see a spec for max RF level on their web site but it might be worth looking into. I bought a few of them one time to protect the ports of my VNA by grounding the DC input terminal. They've worked very well.
Mike
On Tue, Jun 2, 2020 at 9:45 AM k0ekl--- via AMSAT-BB <[email protected] mailto:[email protected] > wrote:
I'm purchased 2m and 432 preamps for my satellite antenna system and both will require external bias-tees for power. Looking around on both US and UK/EU websites I've found bias-tees that cost almost as much or more than the preamps did. The inexpensive devices I've found are receive-only and meant for SRD users.
Does anyone know of a source of bias-tees that cost less than $100.00 each, have decent specs on 2m and 432 and can withstand a transmit power of 50 or 100 watts. (Yes, I know I don't need to run 50 or 100 watts for satellite work but I don't want devices that will fail the first time I accidentally transmit "QRO".
Thanks
_______________________________________________ Sent via [email protected] mailto:[email protected] . AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (4)
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Dave K0EKL -
k0ekl＠frontier.com -
Mike Seguin -
Mike Wilhelm