What TX amplifier do you plan to use?

ALFA Network AGA-2424 - Outdoor Gitterantenne

Seller: varia-store, Chemnitz, Germany

Quote from DG4BX

3) Long-Range WLAN Grid antenna 24 dBi, 2.4 GHz ---> Polarisation not RHCP but only linear H or V (= 3 dB less)

Likely FAKE! as well... or did you measure it?

gain = 10*log((4*pi*A)/labda^2) = 10 * log((4 * 3.14 * .6 * .997) / (300 / 2400)^2) =

26.8dBi.

Of course a little less in practice due to imperfect illumination.

Well, at least it does not seem to be a ridiculous advertisement spec...

I've used these antennas in the past for WiFi use.

I measured a +19dB signal increase when switching one side from an omni-directional antenna to a "24dBi grid" antenna like that.

The remaining 5dB are probably cable/adapter losses, measuring imperfections and the little bit of gain the lambda/4'th omni antenna had. But yeah, the claim seems reasonable.

Hello,

here an intersting information from SG-LAB - 20W for €126.- coming soon.

http://www.sg-lab.com/AMP2400/amp2400.html

vy 73 de Johannes

DL5RDI: Now that is very interesting indeed, esp for portable ops...

Quote from g7iii

DL5RDI: Now that is very interesting indeed, esp for portable ops...

Well what I liked about the Aliexpress amplifier that DH2VA mentioned is that it already includes the DC-DC converter for use with supply voltage between 12 and 24 volt!

However, the SG LAB amplifier is more suited for use with the transverter of the same source due to the rated input power.

(those WiFi boosters have far too much gain)

DB8TF

No, sorry I have no additional information than that provided in the link I sent.

73 de Johannes

SG-LAB also have this:

http://www.sg-lab.com/TR2300/2300%20MHzTransverter_V1.4b.pdf

now it may only be 2W, but might be of use to some. Indeed, if my calculations are correct, then they suggest that if pre-launch uplink estimates are correct, then with a 1.1M dish, 2W will suffice

Iain

Quote from g7iii

SG-LAB also have this:

http://www.sg-lab.com/TR2300/2300%20MHzTransverter_V1.4b.pdf

now it may only be 2W, but might be of use to some.

Yes I have that transverter. It is jumper-settable between 2320 and 2400 MHz with 432MHz IF. I currently have it on 2320 and it works very well, really stable.

This is also the reason why I would need only a single-stage LDMOS amplifier to get very good power, no need for those high-gain amps made to amplify 10-100mW WiFi.

Zitat von g7iii

SG-LAB also have this:

http://www.sg-lab.com/TR2300/2300%20MHzTransverter_V1.4b.pdf

now it may only be 2W, but might be of use to some.

I have the same transverter. It should be noted that the output power of my device has only 1 Watt CW continuous carrier. Incidentally, I still see sidebands which require a filter after the transverter. If one calculates that even with 1 dB of attenuation only 0,75 Watts remain to drive a power amplifier ....

输入0db - ERA-5SM - AH1-G - FLL357 - MRF21045 - 输出45.8db

from taobao china

https://item.taobao.com/item.h…3ad4H1mhL2&id=45394655512

RMB 430

2.4G。

Remarks ：it is Power Amplifier Drive Level。Remove Wave filter and power amplifier of last stage。

I do is removed at the input two IPS503 Hybrid Couplers

vy73 BG0AUB