Ken,

Mini Kits in Australia have some very nice kits, reasonable prices, and quick shipping

https://www.minikits.com.au/electronic-kits/rf-amplifiers/rf-preamplifiers

and for bias tees

https://www.minikits.com.au/electronic-kits/bias-tee

and lots of other interesting and neat stuff.

cheers, Graham ve3gtc near Ottawa Canada

On 1/23/2019, "Ken M" [email protected] wrote:

Hello all,

I am seeking suggestions for reasonably low-cost (but reasonably effective) masthead preamps for 2m and 70cm to go along with a pair of omni QFH antennas Kit or commercial is fine.

Also any thoughts on how effective preamps might be on omni antennas vs highly directional antennas.

Thanks -

73 Ken VA7KBM _______________________________________________ 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: http://www.amsat.org/mailman/listinfo/amsat-bb

I'll add for receive-only, check out the preamps that Airspy.us sells. They have a broadband one (with no filtering) and also some band-specific preamps. The nice thing is that they can be powered by phantom power on the coax, which can be supplied by a funcube dongle, and Airspy, or and RTL-SDR.

As many have said, it all depends on the application!

On Thu, Jan 24, 2019 at 10:52 AM Peter Goodhall (2M0SQL) < [email protected]> wrote:

Everyone going to have strong views on Omnis vs Yagis so I'll cut to comments on preamps

Low-cost decent preamps can be purchased from shf elektronik in Germany http://www.shf-elektronik.de/en/ they are also resold via Wimo, these preamps are well designed and have RF sense switching so you can use them on TX too.

73, Peter, 2M0SQL

On Thu, 24 Jan 2019 at 12:32, Ken M [email protected] wrote:

...

Hello all,

I am seeking suggestions for reasonably low-cost (but reasonably

effective) masthead preamps for 2m and 70cm to go along with a pair of omni QFH antennas. Kit or commercial is fine.

...

Also any thoughts on how effective preamps might be on omni antennas vs

highly directional antennas.

...

Thanks -

73 Ken VA7KBM _______________________________________________ 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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb