Search found 5 matches

by ik6hpb
19 Aug 2023, 10:25
Forum: Вопросы и обсуждение
Topic: Трансивер Raisin DX2
Replies: 184
Views: 98640

Re: Трансивер Raisin DX2

Hello , very good job, is fantastic... I have the question : 1) what is the minimum level of the threshold AGC ? 5 uV around -93 dbm ? Would it be possible to bring it lower ?.. around - 110 dbm ? 2) what is the total dynamics of the agc ? 3) what is the level local oscillator of the bfo ? p4.. many...
by ik6hpb
21 Jan 2023, 15:10
Forum: Вопросы и обсуждение
Topic: Трансивер Raisin DX2
Replies: 184
Views: 98640

Re: Трансивер Raisin DX2

more questions:

have you had time to check the dynamics of the agc ?
can you tell me what level in dbm you have at the output of the tx before the mixer ( 9mhz ) ?
many thanks
ik6hpb
by ik6hpb
19 Jan 2023, 00:31
Forum: Вопросы и обсуждение
Topic: Трансивер Raisin DX2
Replies: 184
Views: 98640

Re: Трансивер Raisin DX2

What is the ferrite k7 u 2000 ?
I have ft37-43...
ft23-77
bn43-2402...
is the same ?
ik6hpb
by ik6hpb
18 Jan 2023, 23:30
Forum: Вопросы и обсуждение
Topic: Трансивер Raisin DX2
Replies: 184
Views: 98640

Re: Трансивер Raisin DX2

Thanks for your reply , i have instruments for testing the circuits : Vna dg8saq, analyzer hp8563e, digital oscilloscope 100mhz . I built : cdg2000 in the year 2001/ 2008 https://ik6hpb.jimdofree.com/ rtx 144mhz design dl7qy dubus 1985/1986 /ub7kpv vfo si570 / if 21.4mhz hycas w7zoi ; but I don't li...
by ik6hpb
18 Jan 2023, 21:45
Forum: Вопросы и обсуждение
Topic: Трансивер Raisin DX2
Replies: 184
Views: 98640

Re: Трансивер Raisin DX2

Dear,
i'am interested to try your schematic rtx raisin dx2 ...
i have 2 question :
What is the gain of if 9mhz ?
the filter quartz is n°2 ...one for rx and one for tx ? or both serially ? i not shure...

many thanks for your reply.
73
Ik6hpb
Italy