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Re: SAW filtr 403.5 MHz

PoslaťNapísal: Štv 12. Máj 2016 10:31:02
od dj1an
Hello,

we had major Problems with nearby "Tetra" Repeaters at our Weathersonde SDR Rx Station DL0HT.
The Murata SAW Filters RF1419D cured the problem.

Below a Picture of the Spectrum before and after installing the Filter:
rf1419d_heatmap.jpg
rf1419 heatmap before_after


We designed a small PCB with SMA Connectors for the Filter:
saw_platine.png
saw pcb
saw_platine.png (8.77 KiB) Zobrazené 1985 krát

p4072412_02.jpg
rf1419d assembled


More Information at https://wetterson.de/flohmarkt/
At this moment, we have no spare SAW Filters, if there is enough interest we would order some more.

73 de DJ1AN, Jan

Re: SAW filtr 403.5 MHz

PoslaťNapísal: Str 14. Sep 2016 0:48:24
od thieringpeti
I've two of my saw filters killed by a nearby lighnting "signal" picked up by my antenna. Beware of thunderstorms, these parts are very sensitive to ESD.

https://en.tdk.eu/download/530902/51595 ... f-an17.pdf read this!

The article recommends using an impedance matching LC circuit and a low capacitance diode, e.g BAV99 before the input.

Now I have only one spare RF1419D left, so I will put a diode parallell the input for the last one.

Re: SAW filtr 403.5 MHz

PoslaťNapísal: Pon 06. Feb 2017 13:25:11
od Mirek
Mám na prodej několik filtru RF1419D 403 MHz. Cena 110,-
Ještě prodám pár kusů MMIC obvodů SKY65162-70LF. Frekvenční rozsah 400-2700 MHz, output power +30dBm (1W), pouzdro SOT89.
Hodí se třeba na "nezahltitelný" předzesilovač nebo malý vysílač. Cena 100,-

Re: SAW filtr 403.5 MHz

PoslaťNapísal: Pia 01. Sep 2017 7:52:05
od thieringpeti
Now nobody sells this on Aliexpress.

Only Mouser and Digi-Key has stock of these filters.

http://cz.mouser.com/ProductDetail/Mura ... gY3%2f4pw=

Re: SAW filtr 403.5 MHz

PoslaťNapísal: Sob 02. Sep 2017 11:05:42
od Mirek
Yes, Mouser has a good price but expensive postage. I still have several pieces for sale.

Re: SAW filtr 403.5 MHz

PoslaťNapísal: Sob 09. Sep 2017 17:28:01
od 2IT
Mirku kolik mas ks na prodej prosim/??

Re: SAW filtr 403.5 MHz

PoslaťNapísal: Sob 09. Sep 2017 17:48:23
od Mirek
2IT píše:Mirku kolik mas ks na prodej prosim/??

Ještě mám 7 ks.

Re: SAW filtr 403.5 MHz

PoslaťNapísal: Pon 18. Sep 2017 3:07:20
od 2IT
mohu si u tebe 3 ks objednat??
plus postovne atd,??
Desticky predpokladam nemas ake to uz si sbastlim :)

73
Jirka

Re: SAW filtr 403.5 MHz

PoslaťNapísal: Pia 22. Sep 2017 9:59:05
od Mirek
Pošli mi adresu přes SZ.