Найден 21 результат

IK2LRN
25 ноя 2022 16:45
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

HI, I WOULD LIKE TO KNOW WHERE I CAN PURCHASE GOOD QUALITY SPEAKERS THAT FITS WITH THE ENCLOSURE.
Visaton SL 87 ND - 8 Ohm is suitable for that purpose ?
THANKS, 73
LUCA IK2LRN
ITALIA
IK2LRN
03 ноя 2022 19:10
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.
Ответы: 15
Просмотры: 687

Re: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.

Hi , the bootloader app establish the connections but the download fails since the FPGA refuse to boot.
Thanks,
73
Luca IK2LRN
IK2LRN
02 ноя 2022 19:07
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

Hi Yuri,
i would like to know if it is foreseen an further evolution of the SDR Avelina.

Luca
IK2LRN
02 ноя 2022 11:45
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.
Ответы: 15
Просмотры: 687

Re: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.

@ YL2GVC where i must measure the oscillator signal level ? The lan led blink
@ Yuri i will verify in details the lan chipset parameters and i will report the details.

Thanks
Luca IK2LRN
Italia
IK2LRN
01 ноя 2022 14:35
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.
Ответы: 15
Просмотры: 687

Re: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.

Hi Yuri, yesterday i have successfully implemented my second working Avelina III. I am very happy about that. Now i i would like to understand why my does not work my others two boards: Avelina II and Avelina III Both boards have the same bahaviour: with and without bootloder mode led D15 remain on ...
IK2LRN
11 окт 2022 20:43
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.
Ответы: 15
Просмотры: 687

Re: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.

Hy Yuri ! i have purchased the FPGA at Aliexpress ,for a completely new Avelina IIi board ,for 300 euro. It seams that currently the prices are dropping. What seller do you suggest ? I have already seen your well done video but I didn't see the target temperature for the bottom and top PCB. I can se...
IK2LRN
10 окт 2022 15:20
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.
Ответы: 15
Просмотры: 687

Re: Anvelina SDR transceiver by EU2AV: how to build, solder, where to get parts, etc.

Hi Yury, I have implemented 3 Avelina boards. Unfortunately only one works perfectly. The others two refused to boot: i don't know why ! I intend to replace the FPGA for try to solve the issue. I would like to know how to desolder the FPGA without damage the other surrounding and downstairs componen...
IK2LRN
01 сен 2022 17:54
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

I have just ordered RD70HUF2. Please let me know the bias required.
73 Thanks
Luca IK2LRN
IK2LRN
30 авг 2022 21:21
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

Hello Yuri,
which is the best transistor for this Transverter ?
73
Luca
IK2LRN
28 авг 2022 12:35
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

Hi Yuri, i am currntly building also your 2m Transverter. With reference to attached picture i didn't found the following informations, at schematics and BOM: 1) L21,L22,L23,L9,L12 : wire and coil diameters, coil lenght (turns spacing) 2) Front Side: C* capacitors 3) Rear Side c, cf1,cb1,cb2,cb3,cb4...
IK2LRN
26 авг 2022 12:57
Форум: Технический форум
Тема: Высоколинейный Драйвер для сдр 0.3-2watts.
Ответы: 17
Просмотры: 10968

Re: Высоколинейный Драйвер для сдр 0.3-2watts.

Thanks for your reply.
If i use the the 0.3w output sma i need to modify the attenuator?
Luca
IK2LRN
23 авг 2022 14:25
Форум: Технический форум
Тема: Высоколинейный Драйвер для сдр 0.3-2watts.
Ответы: 17
Просмотры: 10968

Re: Высоколинейный Драйвер для сдр 0.3-2watts.

Hi Yuri, i intend to use it with my homebuilt Hermes Board. How do you have pick-up the signal from the board ? Do you have applied ufl connectors? If i pick up the signal from the board tx output sma how i need to change the attenuator ? It is expected performance degradation if you use the tx outp...
IK2LRN
16 авг 2022 16:31
Форум: Технический форум
Тема: Высоколинейный Драйвер для сдр 0.3-2watts.
Ответы: 17
Просмотры: 10968

Re: Высоколинейный Драйвер для сдр 0.3-2watts.

Hi Yuri, i have allmost finished your SDR Driver. Please refer with attached picture. I would like to know how do you suggest to proceed to adjust mosfet bias and the bias vaules [mA]. Like your schematic i have used the filter RLP40. Why you do not have used RLP50 for cover also 6m band ? Thanks, 7...
IK2LRN
22 июл 2022 14:30
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

Hi Yuri, which is the best companion antenna tuner solution for your 100W amplifier?
Do you have think about integrate ATU in your enclosure?
I have already ordered your new enclosure, It should arrive in soon.
I have an antenna wire dipole than antenna tuner is absolutely required.

73

Luca IK2LRN
IK2LRN
16 июл 2022 16:16
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

Hi Yury,in order to update to 3.6.1 i have replaced 1) allmost all the LPF capacitors 2) R36 1.2K 3) R56-59 22ohm 4) R60-61 33K 5) add 2x22k at D51 (see picture).
If you remmember others variations please let me know.
Thanks, 73
Luca IK2LRN

IMG_1269.jpg
IK2LRN
15 июл 2022 13:16
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

Hi Yury,
thanks for the detailed information.
In order to avoid confusion i ask if you can please provide the updated schematics.
For the implementation i have used as reference
the values indicated in 3.6.0 schematics.
I have not used bom
73
Luca IK2LRN
IK2LRN
14 июл 2022 21:40
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

Hi Yury, in the new Amplifier version 3.6 there are some capacitors and resistors with the indication R* and C*. Please refer with the red circles in the attached picture. Please let me know what does it mean.
73
Luca
536EC4C2-0A0B-4BF8-A433-F47BE10B9307.jpeg
IK2LRN
14 июл 2022 08:55
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

Hi Yury,
at 6m maximum power is about 80w
I am currently start to build your new 3.6 version.
73
Luca
IK2LRN
12 июл 2022 19:38
Форум: International forum
Тема: Anvelina SDR transceiver by EU2AV
Ответы: 43
Просмотры: 3772

Re: Anvelina SDR transceiver by EU2AV

Hi All,
i have successfully implemented Avelina SDR III with its 100W Amplifier.
73
Luca IK2LRN
Italy
IMG_1245.jpeg