What is the power handling capacity

[William Ashley]

Hi,

I'm wondering how much rx and tx energy this thing can take.

Two things specifically

an amplified antenna (example on that amplifies the incoming singal by 30-40db)

transmit from a 4w or 1w transmitter.

How much power handling does this thing have,

what can or cannot be hooked up to this.

I'm also trying to clarify if this thing upconverts everything by 100mhz

example will 200mhz come in from 200mhz?

What type of oscillators can this take, how high or low frequency can be interchanged with the standard 100mhz crystal?

Can I connect it backwards and get an downconverter? example receive a 200mhz signal at 100mhz

or send a 100mhz signal at 200mhz?
or send a 10mhz signal at 110mhz?

Hopefully you know exactly what I am looking to figure out..

example can a UHF/VHF handheld for instance broadcasting at 136mhz receive 36mhz singals, by attaching this, and can a 200mhz signal tx to 100mhz through the reverse tx

[Opendous]

Into the RF port (RX) the maximum input is +1dBm. This is the 1dB
compression point of the mixer above which distortion will become
significant.

Into the IF port (TX) the maximum input is +4dBm since the 100MHz to
150MHz bandpass filter has losses of about 3dB. This is also related
to the 1dB compression point of the mixer.

For reception (0.5MHz-to-50MHz into RF, 100.5MHz-to-150MHz out of
IF) a useful trick is to put attenuation instead of amplification
between their antenna and the RF port of the Upconverter. It and RTL
Dongles are good at receiving weak signals. Weaker signals can be
more useful. It depends on your antenna and any pre-filtering.

For transmission (100.5MHz-to-150MHz into IF, 0.5MHz-to-50MHz out of
RF) you would need to place a power amplifier between the Upconverter
RF port and your antenna, not between transmitter and IF.

>what can or cannot be hooked up to this ...

>an amplified antenna (example on that amplifies

>the incoming signal by 30-40db)

Anything that stays within the mixer 1dB compression limits will
produce usable results. The RF port has protection diodes which
should keep the board from frying if you go over but IF needs
consideration if it is used for transmission instead of reception.

If your amplified antenna is tuned for HAM bands and its output
power is +1dBm then it should be fine. If it also picks up AM/FM then
it could cause problems. An AM and/or FM filter may be needed with
amplified signals.

>can a UHF/VHF handheld for instance broadcasting
>at 136mhz receive 36mhz singals

Yes, a UHF/VHF handheld that can receive 136MHz will be able to
receive 36MHz with the Upconverter and an appropriate antenna.

>I'm also trying to clarify if this thing
>upconverts everything by 100mhz

It does, but the filters are there to make the mixer output useful.

>can a 200mhz signal tx to 100mhz
>through the reverse tx

Unfortunately no. The RF filter is 0.5MHz-to-60MHz and the IF
filter is 100MHz-to-150MHz. At best you could have a 150MHz signal
transmit at 50MHz through the Upconverter without modifications. For
200MHz-->100MHz the filters would need to be redesigned.