I asked about mars capability with power genius xl and was told no but possibly in the future.
Bob Hardie at expert amps told me the SPE Expert 2K-FA has a menu setting to operate full coverage Mars/Cap. maybe someone that currently owns a 2K-FA can verify. I currently run an Expert 1K-FA which I love but while operating mars I have to run a different amp and tuner, this is the only thing that stops me from being fully automated. Maybe a 2K-FA in my future.
Once we better understand using the amp on MARS frequencies, there may be an optional hardware and/or software update that will enhance the operation of MARS. At this time we cannot not make any commitments one way or another.
you have to understand that output filters are designed to cut off harmonics on level of minimum -43dBc. PG XL is probably cleanest amplifier on the market, and because of that can shift on frequencies bellow HAM bands wider that others.
Only limitation for operating out of HAM band are filters. Power Genius is capable to operate on some of frequencies, but can't operate on all with good harmonic suppression. None of solid state amplifiers can't. SPE or RF2K, or PG XL.
One example. You want to operate bellow 14MHz:
PG XL has filter for 10MHz and 14MHz, and it works up to 14,5 MHz. Above 14,5MHz it start to cut spectrum and need to move at least 2-3MHz to have 30dB of attention. If we say that on 17 MHz it has -30dB and add second harmonic suppression on LDMOS of 15dB, we are on -45dBc. It is minimum we have to have.
As 17MHz is second harmonic frequency, carrier frequency is 17MHz/2 = 8.5MHz.
With filter for 10/14Mhz it can operate from 8.5 - 14,5MHz. Pretty wide.
Low pas filter has minimum and maximum frequency, for needed harmonic suppression and it is more or less the same in all amplifiers. PG XL has most advanced filter unit, as we use diplexer system.
We could say - yes, PG XL can works on all frequencies. And it does, from 1,8 - 54 MHz, full power. Just switch it on 6M band. With 6M Low pass filter, amplifier is open for all frequencies. But - harmonics will be terrible,. It would be unfair to claim output power careless of specification. If someone is saying this, be careful. That kind of HAM amplifier does not exist.
What I can do to give you exact and accurate information? I will measure harmonics and will make exact specification of frequency bands where harmonics are under FCC rules.
Operation of the PGXL from 5 to 7 MHZ should be fine with band data set to 7Mhz. Just bellow 20M is fine as well and band data should be 20M. With this filter it will fork anywhere between 10MHz and 14.4 MHz. With band data on 15M it can operate anywhere between 18-29 MHz, except 26-28.
I hope that helps you with your MARs questions.
Many 73, Mike va3mw
I took this to indicate that the amp would be usable on MARS frequencies, with reduced output. Is this no longer the case? If it is, I will need to look elsewhere for an amp for MARS usage.
Power Genius is designed for high performance on HAM radio bands. Spurious emissions are much better than needed by standard FCC 97.307. Thanks to diplexer filters in output circuit Power Genius can operate in a much wider frequency range without any modifications. Except one very narrow frequency strip from 2,2 to 2,5 MHz, where spurious are > 35dB , Power Genius can operate broadband without any modifications.
Requirements for operating on MARS frequencies:
- Load firmware with the MARS option unlocked – will be available soon.
If you intend to use CAT controlled radios band switching will be automatic.
If not, you will need to select the proper filter manually. This option will be available in special MARS software.We check all parameters in LAB, running full legal power, and results are given in table below: