On May 8, 2015, at 9:40 AM, tmr0195@comcast.net wrote:

2. The Consolidated TNE Errata, p. 35, has directions for adding the note: Antenna Price (in MCr) = Antenna Area x 0.05 below the Radar on TNE FF&S p. 50. The addition of antenna price changes the final price of the TL-9 sensor packages.

Right. I'm sure this item was not included in QSDS, so the price of the TL-9 sensor packages will change.

3. Jammers are not mentioned in the Sensor overview on QSDS p. 10. But they are listed in the USD column of the Standard Sensor Systems Table on p. 11. TNE FF&S p. 53, indicates that a there are four types of jammer. There is a jammer designed to be used against a radio communicator, another one for radar, and one for the AEMS. The fourth system is an area jammer which degrades radio and sensors. My guess is that the jammers used in QSDS are for radar and the AEMS. At minimum I would suggest adding a radio jammer as part of the small and medium military sensor packages. An alternative would be to have three separate jammers to cover TL-9 and introduce the area jammer at TL-10.

QSDS packages currently include only an EMS jammer (or radar jammer at TLs where the EMS jammer is unavailable). For purposes of producing errata, I don't think that we should modify the capabilities of the existing sensor packages. They are what they are - and certainly there are innumerable other conceivable packages that might be included. So for errata purposes, we should limit our changes to correcting errors in the existing tables.

That said, if you would like to produce data for an add-on expanded set of electronics packages (kind-of an electronics-focussed version of the "QSDS Big Book of Hulls"), that would be excellent. At minimum, it would be nice to expand the sensors and communications tables to include TL-13 through TL-15. It would also be nice to add an "advanced" civilian sensor package, and produce more options for military packages - for example, it would be nice to have Scout and Wild Weasel packages at each TL.

The Improved package increases the range of the active sensor.

This should be obvious from the data table.

Both military packages add a LADAR system for accurate range-finding and target designation, jammers (radar or AEMS when available),

Not all of the military packages listed include jammers. For example, the TL-10 small military package has a jamming USD of 0.

I believe this was done to make the package fit in specific constraints (cost, area, power, etc.) we had established for each package category.

The fact that some of the military packages include jammers should be obvious from the table.

While the type of jammer is important to re-creating the designs in FF&S, I seem to recall that they aren't important in terms of the T4 game itself. QSDS exists to support roleplaying using the basic T4 rules, so a lot of details that don't have specific game effects are omitted in the interest of saving space and simplifying the system.

The passive sensor antenna diameter determines the minimum hull length and size in displacement tons the sensor can be mounted on.

QSDS uses either displacement tons or hull length as the constraint, not both. Early versions of QSDS used a "Min Hull" and required that ships be built only with the hulls listed. Later versions switched to "Min Length" to allow use of additional hulls (for example, from the "QSDS Big Book of Hulls"). For compatibility with the "QSDS Big Book of Hulls", we should continue to use length.

Strictly speaking, the largest antenna in the package determines the minimum length for a ship mounting these sensors. This is normally the passive sensor, but possible other sensor packages in an as-yet-unwritten "QSDS Big Book of Sensors" could have their size dictated by something other than the passive sensor antenna.

Passive sensor antennas for the basic and improved packages are fixed array while the military packages use folding arrays.

Similar to the above, I don't recall that T4 had any rules specifically for fixed versus folding sensor arrays, so this detail was omitted in the QSDS.